81 lines
2.2 KiB
PHP
81 lines
2.2 KiB
PHP
<?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 = [
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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, [
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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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$tempFile = tempnam(sys_get_temp_dir(), 'dpei');
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ob_start();
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if ($saveFuntion($image, $tempFile) === false) {
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throw new Exception("{$saveFuntion}() failed");
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}
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$contents = ob_get_contents();
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ob_end_clean();
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if (!is_file($tempFile)) {
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throw new Exception("{$saveFuntion}() didn't create a file");
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}
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if (filesize($tempFile) < 1) {
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if ($format !== 'xbm' || PHP_VERSION_ID >= 50600 || $contents === '') {
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throw new Exception("{$saveFuntion}() created an empty file");
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}
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file_put_contents($tempFile, $contents);
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}
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$image2 = $loadFuntion($tempFile);
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unlink($tempFile);
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$tempFile = null;
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if (!(is_resource($image2) || is_object($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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