70 lines
1.8 KiB
PHP
70 lines
1.8 KiB
PHP
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<?php
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$imageWidth = 8;
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$imageHeight = 16;
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$image = imagecreatetruecolor($imageWidth, $imageHeight);
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$formats = array(
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'gd2',
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'gif',
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'jpeg',
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'png',
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'wbmp',
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'webp',
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'wbmp',
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'xbm',
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'xpm',
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'gd',
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);
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if (PHP_VERSION_ID >= 70200) {
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$formats = array_merge($formats, array(
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'bmp',
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));
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}
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$tempFile = null;
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$image2 = null;
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try {
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foreach ($formats as $format) {
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$loadFuntion = "imagecreatefrom${format}";
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if (!function_exists($loadFuntion)) {
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throw new Exception("$loadFuntion() function is missing");
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}
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if ($format === 'xpm') {
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continue;
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}
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$saveFuntion = "image${format}";
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if (!function_exists($saveFuntion)) {
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throw new Exception("$saveFuntion() function is missing");
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}
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$tempFile = tempnam(sys_get_temp_dir(), 'dpei');
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if ($saveFuntion($image, $tempFile) === false) {
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throw new Exception("$saveFuntion() failed");
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}
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if (!is_file($tempFile) || filesize($tempFile) < 1) {
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throw new Exception("$saveFuntion() created an empty file");
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}
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$image2 = $loadFuntion($tempFile);
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unlink($tempFile);
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$tempFile = null;
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if (!is_resource($image2) || imagesx($image2) !== $imageWidth || imagesy($image2) !== $imageHeight) {
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throw new Exception("$loadFuntion() failed");
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}
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imagedestroy($image2);
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}
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} finally {
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imagedestroy($image);
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if (is_resource($image2)) {
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imagedestroy($image2);
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}
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if($tempFile !== null) {
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unlink($tempFile);
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}
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}
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if (!function_exists('imagefttext')) {
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throw new Exception("imagefttext() function is missing");
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}
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if (!function_exists('imageantialias')) {
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throw new Exception("imageantialias() function is missing");
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}
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return true;
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