707 lines
22 KiB
PHP
707 lines
22 KiB
PHP
<?php
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//////////////////////////////////////////////////////////////
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/// phpThumb() by James Heinrich <info@silisoftware.com> //
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// available at http://phpthumb.sourceforge.net ///
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//////////////////////////////////////////////////////////////
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/// //
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// phpthumb.functions.php - general support functions //
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// ///
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//////////////////////////////////////////////////////////////
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class phpthumb_functions {
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function user_function_exists($functionname) {
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if (function_exists('get_defined_functions')) {
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static $get_defined_functions = array();
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if (empty($get_defined_functions)) {
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$get_defined_functions = get_defined_functions();
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}
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return in_array(strtolower($functionname), $get_defined_functions['user']);
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}
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return function_exists($functionname);
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}
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function builtin_function_exists($functionname) {
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if (function_exists('get_defined_functions')) {
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static $get_defined_functions = array();
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if (empty($get_defined_functions)) {
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$get_defined_functions = get_defined_functions();
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}
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return in_array(strtolower($functionname), $get_defined_functions['internal']);
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}
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return function_exists($functionname);
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}
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function version_compare_replacement_sub($version1, $version2, $operator='') {
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// If you specify the third optional operator argument, you can test for a particular relationship.
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// The possible operators are: <, lt, <=, le, >, gt, >=, ge, ==, =, eq, !=, <>, ne respectively.
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// Using this argument, the function will return 1 if the relationship is the one specified by the operator, 0 otherwise.
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// If a part contains special version strings these are handled in the following order: dev < (alpha = a) < (beta = b) < RC < pl
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static $versiontype_lookup = array();
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if (empty($versiontype_lookup)) {
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$versiontype_lookup['dev'] = 10001;
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$versiontype_lookup['a'] = 10002;
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$versiontype_lookup['alpha'] = 10002;
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$versiontype_lookup['b'] = 10003;
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$versiontype_lookup['beta'] = 10003;
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$versiontype_lookup['RC'] = 10004;
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$versiontype_lookup['pl'] = 10005;
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}
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if (isset($versiontype_lookup[$version1])) {
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$version1 = $versiontype_lookup[$version1];
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}
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if (isset($versiontype_lookup[$version2])) {
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$version2 = $versiontype_lookup[$version2];
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}
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switch ($operator) {
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case '<':
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case 'lt':
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return intval($version1 < $version2);
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break;
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case '<=':
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case 'le':
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return intval($version1 <= $version2);
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break;
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case '>':
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case 'gt':
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return intval($version1 > $version2);
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break;
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case '>=':
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case 'ge':
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return intval($version1 >= $version2);
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break;
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case '==':
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case '=':
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case 'eq':
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return intval($version1 == $version2);
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break;
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case '!=':
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case '<>':
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case 'ne':
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return intval($version1 != $version2);
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break;
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}
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if ($version1 == $version2) {
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return 0;
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} elseif ($version1 < $version2) {
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return -1;
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}
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return 1;
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}
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function version_compare_replacement($version1, $version2, $operator='') {
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if (function_exists('version_compare')) {
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// built into PHP v4.1.0+
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return version_compare($version1, $version2, $operator);
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}
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// The function first replaces _, - and + with a dot . in the version strings
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$version1 = strtr($version1, '_-+', '...');
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$version2 = strtr($version2, '_-+', '...');
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// and also inserts dots . before and after any non number so that for example '4.3.2RC1' becomes '4.3.2.RC.1'.
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// Then it splits the results like if you were using explode('.',$ver). Then it compares the parts starting from left to right.
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$version1 = eregi_replace('([0-9]+)([A-Z]+)([0-9]+)', '\\1.\\2.\\3', $version1);
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$version2 = eregi_replace('([0-9]+)([A-Z]+)([0-9]+)', '\\1.\\2.\\3', $version2);
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$parts1 = explode('.', $version1);
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$parts2 = explode('.', $version1);
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$parts_count = max(count($parts1), count($parts2));
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for ($i = 0; $i < $parts_count; $i++) {
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$comparison = phpthumb_functions::version_compare_replacement_sub($version1, $version2, $operator);
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if ($comparison != 0) {
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return $comparison;
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}
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}
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return 0;
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}
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function phpinfo_array() {
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static $phpinfo_array = array();
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if (empty($phpinfo_array)) {
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ob_start();
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phpinfo();
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$phpinfo = ob_get_contents();
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ob_end_clean();
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$phpinfo_array = explode("\n", $phpinfo);
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}
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return $phpinfo_array;
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}
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function exif_info() {
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static $exif_info = array();
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if (empty($exif_info)) {
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// based on code by johnschaefer at gmx dot de
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// from PHP help on gd_info()
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$exif_info = array(
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'EXIF Support' => '',
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'EXIF Version' => '',
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'Supported EXIF Version' => '',
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'Supported filetypes' => ''
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);
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$phpinfo_array = phpthumb_functions::phpinfo_array();
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foreach ($phpinfo_array as $dummy => $line) {
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$line = trim(strip_tags($line));
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foreach ($exif_info as $key => $value) {
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if (strpos($line, $key) === 0) {
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$newvalue = trim(str_replace($key, '', $line));
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$exif_info[$key] = $newvalue;
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}
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}
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}
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}
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return $exif_info;
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}
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function ImageTypeToMIMEtype($imagetype) {
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if (function_exists('image_type_to_mime_type') && ($imagetype >= 1) && ($imagetype <= 16)) {
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// PHP v4.3.0+
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return image_type_to_mime_type($imagetype);
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}
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static $image_type_to_mime_type = array(
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1 => 'image/gif', // IMAGETYPE_GIF
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2 => 'image/jpeg', // IMAGETYPE_JPEG
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3 => 'image/png', // IMAGETYPE_PNG
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4 => 'application/x-shockwave-flash', // IMAGETYPE_SWF
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5 => 'image/psd', // IMAGETYPE_PSD
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6 => 'image/bmp', // IMAGETYPE_BMP
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7 => 'image/tiff', // IMAGETYPE_TIFF_II (intel byte order)
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8 => 'image/tiff', // IMAGETYPE_TIFF_MM (motorola byte order)
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9 => 'application/octet-stream', // IMAGETYPE_JPC
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10 => 'image/jp2', // IMAGETYPE_JP2
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11 => 'application/octet-stream', // IMAGETYPE_JPX
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12 => 'application/octet-stream', // IMAGETYPE_JB2
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13 => 'application/x-shockwave-flash', // IMAGETYPE_SWC
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14 => 'image/iff', // IMAGETYPE_IFF
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15 => 'image/vnd.wap.wbmp', // IMAGETYPE_WBMP
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16 => 'image/xbm', // IMAGETYPE_XBM
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'gif' => 'image/gif', // IMAGETYPE_GIF
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'jpg' => 'image/jpeg', // IMAGETYPE_JPEG
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'jpeg' => 'image/jpeg', // IMAGETYPE_JPEG
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'png' => 'image/png', // IMAGETYPE_PNG
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'bmp' => 'image/bmp', // IMAGETYPE_BMP
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'ico' => 'image/x-icon',
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);
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return (isset($image_type_to_mime_type[$imagetype]) ? $image_type_to_mime_type[$imagetype] : false);
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}
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function HexCharDisplay($string) {
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$len = strlen($string);
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$output = '';
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for ($i = 0; $i < $len; $i++) {
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$output .= ' 0x'.str_pad(dechex(ord($string{$i})), 2, '0', STR_PAD_LEFT);
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}
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return $output;
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}
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function IsHexColor($HexColorString) {
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return eregi('^[0-9A-F]{6}$', $HexColorString);
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}
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function ImageColorAllocateAlphaSafe(&$gdimg_hexcolorallocate, $R, $G, $B, $alpha=false) {
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if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.2', '>=') && ($alpha !== false)) {
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return ImageColorAllocateAlpha($gdimg_hexcolorallocate, $R, $G, $B, intval($alpha));
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} else {
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return ImageColorAllocate($gdimg_hexcolorallocate, $R, $G, $B);
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}
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}
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function ImageHexColorAllocate(&$gdimg_hexcolorallocate, $HexColorString, $dieOnInvalid=false, $alpha=false) {
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if (!is_resource($gdimg_hexcolorallocate)) {
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die('$gdimg_hexcolorallocate is not a GD resource in ImageHexColorAllocate()');
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}
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if (phpthumb_functions::IsHexColor($HexColorString)) {
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$R = hexdec(substr($HexColorString, 0, 2));
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$G = hexdec(substr($HexColorString, 2, 2));
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$B = hexdec(substr($HexColorString, 4, 2));
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return phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg_hexcolorallocate, $R, $G, $B, $alpha);
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}
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if ($dieOnInvalid) {
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die('Invalid hex color string: "'.$HexColorString.'"');
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}
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return ImageColorAllocate($gdimg_hexcolorallocate, 0x00, 0x00, 0x00);
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}
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function HexColorXOR($hexcolor) {
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return strtoupper(str_pad(dechex(~hexdec($hexcolor) & 0xFFFFFF), 6, '0', STR_PAD_LEFT));
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}
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function GetPixelColor(&$img, $x, $y) {
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if (!is_resource($img)) {
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return false;
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}
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return @ImageColorsForIndex($img, @ImageColorAt($img, $x, $y));
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}
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function GrayscaleValue($r, $g, $b) {
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return round(($r * 0.30) + ($g * 0.59) + ($b * 0.11));
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}
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function GrayscalePixel($OriginalPixel) {
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$gray = phpthumb_functions::GrayscaleValue($OriginalPixel['red'], $OriginalPixel['green'], $OriginalPixel['blue']);
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return array('red'=>$gray, 'green'=>$gray, 'blue'=>$gray);
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}
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function GrayscalePixelRGB($rgb) {
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$r = ($rgb >> 16) & 0xFF;
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$g = ($rgb >> 8) & 0xFF;
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$b = $rgb & 0xFF;
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return ($r * 0.299) + ($g * 0.587) + ($b * 0.114);
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}
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function ImageCopyResampleBicubic($dst_img, $src_img, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h) {
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// ron at korving dot demon dot nl
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// http://www.php.net/imagecopyresampled
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$scaleX = ($src_w - 1) / $dst_w;
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$scaleY = ($src_h - 1) / $dst_h;
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$scaleX2 = $scaleX / 2.0;
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$scaleY2 = $scaleY / 2.0;
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$isTrueColor = ImageIsTrueColor($src_img);
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for ($y = $src_y; $y < $src_y + $dst_h; $y++) {
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$sY = $y * $scaleY;
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$siY = (int) $sY;
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$siY2 = (int) $sY + $scaleY2;
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for ($x = $src_x; $x < $src_x + $dst_w; $x++) {
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$sX = $x * $scaleX;
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$siX = (int) $sX;
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$siX2 = (int) $sX + $scaleX2;
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if ($isTrueColor) {
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$c1 = ImageColorAt($src_img, $siX, $siY2);
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$c2 = ImageColorAt($src_img, $siX, $siY);
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$c3 = ImageColorAt($src_img, $siX2, $siY2);
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$c4 = ImageColorAt($src_img, $siX2, $siY);
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$r = (( $c1 + $c2 + $c3 + $c4 ) >> 2) & 0xFF0000;
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$g = ((($c1 & 0x00FF00) + ($c2 & 0x00FF00) + ($c3 & 0x00FF00) + ($c4 & 0x00FF00)) >> 2) & 0x00FF00;
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$b = ((($c1 & 0x0000FF) + ($c2 & 0x0000FF) + ($c3 & 0x0000FF) + ($c4 & 0x0000FF)) >> 2);
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} else {
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$c1 = ImageColorsForIndex($src_img, ImageColorAt($src_img, $siX, $siY2));
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$c2 = ImageColorsForIndex($src_img, ImageColorAt($src_img, $siX, $siY));
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$c3 = ImageColorsForIndex($src_img, ImageColorAt($src_img, $siX2, $siY2));
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$c4 = ImageColorsForIndex($src_img, ImageColorAt($src_img, $siX2, $siY));
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$r = ($c1['red'] + $c2['red'] + $c3['red'] + $c4['red'] ) << 14;
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$g = ($c1['green'] + $c2['green'] + $c3['green'] + $c4['green']) << 6;
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$b = ($c1['blue'] + $c2['blue'] + $c3['blue'] + $c4['blue'] ) >> 2;
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}
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ImageSetPixel($dst_img, $dst_x + $x - $src_x, $dst_y + $y - $src_y, $r+$g+$b);
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}
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}
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return true;
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}
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function ImageCreateFunction($x_size, $y_size) {
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$ImageCreateFunction = 'ImageCreate';
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if (phpthumb_functions::gd_version() >= 2.0) {
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$ImageCreateFunction = 'ImageCreateTrueColor';
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}
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if (!function_exists($ImageCreateFunction)) {
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return phpthumb::ErrorImage($ImageCreateFunction.'() does not exist - no GD support?');
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}
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if (($x_size <= 0) || ($y_size <= 0)) {
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return phpthumb::ErrorImage('Invalid image dimensions: '.$ImageCreateFunction.'('.$x_size.', '.$y_size.')');
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}
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return $ImageCreateFunction($x_size, $y_size);
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}
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function ImageCopyRespectAlpha(&$dst_im, &$src_im, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $pct=100) {
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for ($x = $src_x; $x < $src_w; $x++) {
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for ($y = $src_y; $y < $src_h; $y++) {
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$RealPixel = phpthumb_functions::GetPixelColor($dst_im, $dst_x + $x, $dst_y + $y);
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$OverlayPixel = phpthumb_functions::GetPixelColor($src_im, $x, $y);
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$alphapct = $OverlayPixel['alpha'] / 127;
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$opacipct = $pct / 100;
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$overlaypct = (1 - $alphapct) * $opacipct;
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$newcolor = phpthumb_functions::ImageColorAllocateAlphaSafe(
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$dst_im,
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round($RealPixel['red'] * (1 - $overlaypct)) + ($OverlayPixel['red'] * $overlaypct),
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round($RealPixel['green'] * (1 - $overlaypct)) + ($OverlayPixel['green'] * $overlaypct),
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round($RealPixel['blue'] * (1 - $overlaypct)) + ($OverlayPixel['blue'] * $overlaypct),
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//$RealPixel['alpha']);
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0);
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ImageSetPixel($dst_im, $dst_x + $x, $dst_y + $y, $newcolor);
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}
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}
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return true;
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}
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function ProportionalResize($old_width, $old_height, $new_width=false, $new_height=false) {
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$old_aspect_ratio = $old_width / $old_height;
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if (($new_width === false) && ($new_height === false)) {
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return false;
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} elseif ($new_width === false) {
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$new_width = $new_height * $old_aspect_ratio;
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} elseif ($new_height === false) {
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$new_height = $new_width / $old_aspect_ratio;
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}
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$new_aspect_ratio = $new_width / $new_height;
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if ($new_aspect_ratio == $old_aspect_ratio) {
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// great, done
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} elseif ($new_aspect_ratio < $old_aspect_ratio) {
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// limited by width
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$new_height = $new_width / $old_aspect_ratio;
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} elseif ($new_aspect_ratio > $old_aspect_ratio) {
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// limited by height
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$new_width = $new_height * $old_aspect_ratio;
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}
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return array(round($new_width), round($new_height));
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}
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function SafeExec($command) {
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static $AllowedExecFunctions = array();
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if (empty($AllowedExecFunctions)) {
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$AllowedExecFunctions = array('shell_exec'=>true, 'passthru'=>true, 'system'=>true, 'exec'=>true);
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if (@ini_get('safe_mode')) {
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$AllowedExecFunctions['shell_exec'] = false;
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}
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$disable_functions = explode(',', @ini_get('disable_functions'));
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foreach ($AllowedExecFunctions as $key => $value) {
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if (in_array($key, $disable_functions)) {
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$AllowedExecFunctions[$key] = false;
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}
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}
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}
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foreach ($AllowedExecFunctions as $execfunction => $is_allowed) {
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if (!$is_allowed) {
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continue;
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}
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if ($execfunction == 'passthru') {
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ob_start();
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$execfunction($command);
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$returnvalue = ob_get_contents();
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ob_end_clean();
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} else {
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$returnvalue = @$execfunction($command);
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}
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return $returnvalue;
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}
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return false;
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}
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function ApacheLookupURIarray($filename) {
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// apache_lookup_uri() only works when PHP is installed as an Apache module.
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if (php_sapi_name() == 'apache') {
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$keys = array('status', 'the_request', 'status_line', 'method', 'content_type', 'handler', 'uri', 'filename', 'path_info', 'args', 'boundary', 'no_cache', 'no_local_copy', 'allowed', 'send_bodyct', 'bytes_sent', 'byterange', 'clength', 'unparsed_uri', 'mtime', 'request_time');
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if ($apacheLookupURIobject = @apache_lookup_uri($filename)) {
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$apacheLookupURIarray = array();
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foreach ($keys as $dummy => $key) {
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$apacheLookupURIarray[$key] = @$apacheLookupURIobject->$key;
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}
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return $apacheLookupURIarray;
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}
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}
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return false;
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}
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function gd_is_bundled() {
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static $isbundled = null;
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if (is_null($isbundled)) {
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$gd_info = gd_info();
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$isbundled = (strpos($gd_info['GD Version'], 'bundled') !== false);
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}
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return $isbundled;
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}
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function gd_version($fullstring=false) {
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static $cache_gd_version = array();
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if (empty($cache_gd_version)) {
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$gd_info = gd_info();
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if (eregi('bundled \((.+)\)$', $gd_info['GD Version'], $matches)) {
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$cache_gd_version[1] = $gd_info['GD Version']; // e.g. "bundled (2.0.15 compatible)"
|
|
$cache_gd_version[0] = (float) $matches[1]; // e.g. "2.0" (not "bundled (2.0.15 compatible)")
|
|
} else {
|
|
$cache_gd_version[1] = $gd_info['GD Version']; // e.g. "1.6.2 or higher"
|
|
$cache_gd_version[0] = (float) substr($gd_info['GD Version'], 0, 3); // e.g. "1.6" (not "1.6.2 or higher")
|
|
}
|
|
}
|
|
return $cache_gd_version[intval($fullstring)];
|
|
}
|
|
|
|
|
|
function gd_ImageSaveAlpha(&$img, $flag) {
|
|
// requires PHP >= 4.3.2
|
|
// requires GD >= 2.0.1
|
|
if (function_exists('ImageSaveAlpha')) {
|
|
return ImageSaveAlpha($img, $flag);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function filesize_remote($remotefile, $timeout=10) {
|
|
$size = false;
|
|
$url = parse_url($remotefile);
|
|
if ($fp = @fsockopen($url['host'], ($url['port'] ? $url['port'] : 80), $errno, $errstr, $timeout)) {
|
|
fwrite($fp, 'HEAD '.@$url['path'].@$url['query'].' HTTP/1.0'."\r\n".'Host: '.@$url['host']."\r\n\r\n");
|
|
if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.0', '>=')) {
|
|
stream_set_timeout($fp, $timeout);
|
|
}
|
|
while (!feof($fp)) {
|
|
$headerline = fgets($fp, 4096);
|
|
if (eregi('^Content-Length: (.*)', $headerline, $matches)) {
|
|
$size = intval($matches[1]);
|
|
break;
|
|
}
|
|
}
|
|
fclose ($fp);
|
|
}
|
|
return $size;
|
|
}
|
|
|
|
|
|
function filedate_remote($remotefile, $timeout=10) {
|
|
$date = false;
|
|
$url = parse_url($remotefile);
|
|
if ($fp = @fsockopen($url['host'], ($url['port'] ? $url['port'] : 80), $errno, $errstr, $timeout)) {
|
|
fwrite($fp, 'HEAD '.@$url['path'].@$url['query'].' HTTP/1.0'."\r\n".'Host: '.@$url['host']."\r\n\r\n");
|
|
if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.0', '>=')) {
|
|
stream_set_timeout($fp, $timeout);
|
|
}
|
|
while (!feof($fp)) {
|
|
$headerline = fgets($fp, 4096);
|
|
if (eregi('^Last-Modified: (.*)', $headerline, $matches)) {
|
|
$date = strtotime($matches[1]) - date('Z');
|
|
break;
|
|
}
|
|
}
|
|
fclose ($fp);
|
|
}
|
|
return $date;
|
|
}
|
|
|
|
|
|
function md5_file_safe($filename) {
|
|
// md5_file() doesn't exist in PHP < 4.2.0
|
|
if (function_exists('md5_file')) {
|
|
return md5_file($filename);
|
|
}
|
|
if ($fp = @fopen($filename, 'rb')) {
|
|
$filedata = fread($fp, filesize($filename));
|
|
fclose($fp);
|
|
return md5($filedata);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
function nonempty_min() {
|
|
$arg_list = func_get_args();
|
|
$acceptable = array();
|
|
foreach ($arg_list as $dummy => $arg) {
|
|
if ($arg) {
|
|
$acceptable[] = $arg;
|
|
}
|
|
}
|
|
return min($acceptable);
|
|
}
|
|
|
|
|
|
function LittleEndian2String($number, $minbytes=1) {
|
|
$intstring = '';
|
|
while ($number > 0) {
|
|
$intstring = $intstring.chr($number & 255);
|
|
$number >>= 8;
|
|
}
|
|
return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT);
|
|
}
|
|
|
|
function OneOfThese() {
|
|
// return the first useful (non-empty/non-zero/non-false) value from those passed
|
|
$arg_list = func_get_args();
|
|
foreach ($arg_list as $key => $value) {
|
|
if ($value) {
|
|
return $value;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function SafeURLread($url, &$error) {
|
|
if (function_exists('curl_version')) {
|
|
$ch = curl_init();
|
|
curl_setopt($ch, CURLOPT_URL, $url);
|
|
curl_setopt($ch, CURLOPT_HEADER, false);
|
|
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
|
|
curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
|
|
$rawData = curl_exec($ch);
|
|
curl_close($ch);
|
|
if (strlen($rawData) > 0) {
|
|
return $rawData;
|
|
}
|
|
$error .= 'CURL available but returned no data; ';
|
|
} else {
|
|
$error .= 'CURL unavailable; ';
|
|
}
|
|
if (@ini_get('allow_url_fopen')) {
|
|
$rawData = '';
|
|
ob_start();
|
|
if ($fp = fopen($url, 'rb')) {
|
|
do {
|
|
$buffer = fread($fp, 8192);
|
|
$rawData .= $buffer;
|
|
} while (strlen($buffer) > 0);
|
|
fclose($fp);
|
|
} else {
|
|
$error = trim(strip_tags(ob_get_contents()));
|
|
}
|
|
ob_end_clean();
|
|
if (!$error) {
|
|
return $rawData;
|
|
}
|
|
$error .= '; "allow_url_fopen" enabled but returned no data; ';
|
|
} else {
|
|
$error .= '"allow_url_fopen" disabled; ';
|
|
}
|
|
return false;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
if (!function_exists('gd_info')) {
|
|
// built into PHP v4.3.0+ (with bundled GD2 library)
|
|
function gd_info() {
|
|
static $gd_info = array();
|
|
if (empty($gd_info)) {
|
|
// based on code by johnschaefer at gmx dot de
|
|
// from PHP help on gd_info()
|
|
$gd_info = array(
|
|
'GD Version' => '',
|
|
'FreeType Support' => false,
|
|
'FreeType Linkage' => '',
|
|
'T1Lib Support' => false,
|
|
'GIF Read Support' => false,
|
|
'GIF Create Support' => false,
|
|
'JPG Support' => false,
|
|
'PNG Support' => false,
|
|
'WBMP Support' => false,
|
|
'XBM Support' => false
|
|
);
|
|
$phpinfo_array = phpthumb_functions::phpinfo_array();
|
|
foreach ($phpinfo_array as $dummy => $line) {
|
|
$line = trim(strip_tags($line));
|
|
foreach ($gd_info as $key => $value) {
|
|
//if (strpos($line, $key) !== false) {
|
|
if (strpos($line, $key) === 0) {
|
|
$newvalue = trim(str_replace($key, '', $line));
|
|
$gd_info[$key] = $newvalue;
|
|
}
|
|
}
|
|
}
|
|
if (empty($gd_info['GD Version'])) {
|
|
// probable cause: "phpinfo() disabled for security reasons"
|
|
if (function_exists('ImageTypes')) {
|
|
$imagetypes = ImageTypes();
|
|
if ($imagetypes & IMG_PNG) {
|
|
$gd_info['PNG Support'] = true;
|
|
}
|
|
if ($imagetypes & IMG_GIF) {
|
|
$gd_info['GIF Create Support'] = true;
|
|
}
|
|
if ($imagetypes & IMG_JPG) {
|
|
$gd_info['JPG Support'] = true;
|
|
}
|
|
if ($imagetypes & IMG_WBMP) {
|
|
$gd_info['WBMP Support'] = true;
|
|
}
|
|
}
|
|
// to determine capability of GIF creation, try to use ImageCreateFromGIF on a 1px GIF
|
|
if (function_exists('ImageCreateFromGIF')) {
|
|
if ($tempfilename = phpthumb::phpThumb_tempnam()) {
|
|
if ($fp_tempfile = @fopen($tempfilename, 'wb')) {
|
|
fwrite($fp_tempfile, base64_decode('R0lGODlhAQABAIAAAH//AP///ywAAAAAAQABAAACAUQAOw==')); // very simple 1px GIF file base64-encoded as string
|
|
fclose($fp_tempfile);
|
|
|
|
// if we can convert the GIF file to a GD image then GIF create support must be enabled, otherwise it's not
|
|
$gd_info['GIF Read Support'] = (bool) @ImageCreateFromGIF($tempfilename);
|
|
}
|
|
unlink($tempfilename);
|
|
}
|
|
}
|
|
if (function_exists('ImageCreateTrueColor') && @ImageCreateTrueColor(1, 1)) {
|
|
$gd_info['GD Version'] = '2.0.1 or higher (assumed)';
|
|
} elseif (function_exists('ImageCreate') && @ImageCreate(1, 1)) {
|
|
$gd_info['GD Version'] = '1.6.0 or higher (assumed)';
|
|
}
|
|
}
|
|
}
|
|
return $gd_info;
|
|
}
|
|
}
|
|
|
|
|
|
if (!function_exists('is_executable')) {
|
|
// in PHP v3+, but v5.0+ for Windows
|
|
function is_executable($filename) {
|
|
// poor substitute, but better than nothing
|
|
return file_exists($filename);
|
|
}
|
|
}
|
|
|
|
|
|
if (!function_exists('file_get_contents')) {
|
|
// included in PHP v4.3.0+
|
|
function file_get_contents($filename) {
|
|
if (eregi('^(f|ht)tp\://', $filename)) {
|
|
return SafeURLread($filename);
|
|
}
|
|
if ($fp = @fopen($filename, 'rb')) {
|
|
$buffer = fread($fp, filesize($filename));
|
|
fclose($fp);
|
|
return $buffer;
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
|
|
if (!function_exists('file_put_contents')) {
|
|
// included in PHP v5.0.0+
|
|
function file_put_contents($filename, $filedata) {
|
|
if ($fp = @fopen($filename, 'wb')) {
|
|
fwrite($fp, $filedata);
|
|
fclose($fp);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
?>
|