69 lines
2.0 KiB
PHP
69 lines
2.0 KiB
PHP
<?php
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/*
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'图像缓存系统'
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使用方式传入远程图片地址例如：
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/img.php?url=https://www.baidu.com/img/flexible/logo/pc/result.png
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*/
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error_reporting(E_ERROR | E_PARSE);
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@ini_set('max_execution_time', '0');
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@ini_set("memory_limit",'-1');
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$url = $_GET["url"];
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if (!empty($url) && substr($url, 0, 4) == 'http') {
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$dir = pathinfo($url);
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$host = $dir['dirname'];
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$ext = $dir['extension'];
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$refer = $host.'/';
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$ch = curl_init($url);
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curl_setopt($ch, CURLOPT_REFERER, $refer);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
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curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
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curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
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curl_setopt($ch, CURLOPT_TIMEOUT, 30);
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curl_setopt($ch, CURLOPT_HEADER, 0);
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curl_setopt($ch, CURLOPT_POST, 0);
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
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curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 1);
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curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
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$data = @curl_exec($ch);
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curl_close($ch);
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$types = array(
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'gif' => 'image/gif',
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'jpeg' => 'image/jpeg',
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'jpg' => 'image/jpeg',
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'jpe' => 'image/jpeg',
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'png' => 'image/png',
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'webp' => 'image/webp',
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);
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$type = $types[$ext] ? $types[$ext] : 'image/jpeg';
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header("Content-type: ".$type);
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// 缓存图片
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$cacheDir = 'cache'; // 缓存文件夹
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// 根据被缓存的网址创建文件夹
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$parsedUrl = parse_url($url);
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$domain = $parsedUrl['host'];
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$cacheSubDir = $cacheDir . '/' . $domain;
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if (!file_exists($cacheSubDir)) {
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mkdir($cacheSubDir, 0777, true); // 创建缓存子文件夹
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}
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// 获取原始图片名称
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$imageName = basename($url);
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$cachedImagePath = $cacheSubDir . '/' . $imageName; // 缓存图片路径
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if (file_exists($cachedImagePath)) {
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// 返回缓存图片
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readfile($cachedImagePath);
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} else {
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// 保存原始图片内容到缓存文件夹
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file_put_contents($cachedImagePath, $data);
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// 输出原始图片
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echo $data;
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}
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}
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?>
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