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<?php
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/**
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* Created by JetBrains PhpStorm.
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* User: taoqili
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* Date: 11-12-28
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* Time: 上午9:54
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* To change this template use File | Settings | File Templates.
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*/
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header("Content-Type: text/html; charset=utf-8");
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error_reporting(E_ERROR|E_WARNING);
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//远程抓取图片配置
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$config = array(
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"savePath" => "upload/" , //保存路径
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"allowFiles" => array( ".gif" , ".png" , ".jpg" , ".jpeg" , ".bmp" ) , //文件允许格式
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"maxSize" => 3000 //文件大小限制，单位KB
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);
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$uri = htmlspecialchars( $_POST[ 'upfile' ] );
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$uri = str_replace( "&" , "&" , $uri );
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getRemoteImage( $uri,$config );
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/**
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* 远程抓取
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* @param $uri
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* @param $config
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*/
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function getRemoteImage( $uri,$config)
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{
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//忽略抓取时间限制
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set_time_limit( 0 );
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//ue_separate_ue ue用于传递数据分割符号
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$imgUrls = explode( "ue_separate_ue" , $uri );
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$tmpNames = array();
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foreach ( $imgUrls as $imgUrl ) {
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//http开头验证
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if(strpos($imgUrl,"http")!==0){
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array_push( $tmpNames , "error" );
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continue;
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}
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//获取请求头
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$heads = get_headers( $imgUrl );
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//死链检测
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if ( !( stristr( $heads[ 0 ] , "200" ) && stristr( $heads[ 0 ] , "OK" ) ) ) {
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array_push( $tmpNames , "error" );
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continue;
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}
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//格式验证(扩展名验证和Content-Type验证)
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$fileType = strtolower( strrchr( $imgUrl , '.' ) );
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if ( !in_array( $fileType , $config[ 'allowFiles' ] ) || stristr( $heads[ 'Content-Type' ] , "image" ) ) {
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array_push( $tmpNames , "error" );
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continue;
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}
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//打开输出缓冲区并获取远程图片
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ob_start();
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$context = stream_context_create(
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array (
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'http' => array (
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'follow_location' => false // don't follow redirects
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)
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)
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);
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//请确保php.ini中的fopen wrappers已经激活
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readfile( $imgUrl,false,$context);
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$img = ob_get_contents();
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ob_end_clean();
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//大小验证
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$uriSize = strlen( $img ); //得到图片大小
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$allowSize = 1024 * $config[ 'maxSize' ];
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if ( $uriSize > $allowSize ) {
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array_push( $tmpNames , "error" );
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continue;
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}
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//创建保存位置
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$savePath = $config[ 'savePath' ];
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if ( !file_exists( $savePath ) ) {
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mkdir( "$savePath" , 0777 );
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}
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//写入文件
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$tmpName = $savePath . rand( 1 , 10000 ) . time() . strrchr( $imgUrl , '.' );
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try {
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$fp2 = @fopen( $tmpName , "a" );
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fwrite( $fp2 , $img );
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fclose( $fp2 );
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array_push( $tmpNames , $tmpName );
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} catch ( Exception $e ) {
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array_push( $tmpNames , "error" );
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}
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}
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/**
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* 返回数据格式
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* {
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* 'url' : '新地址一ue_separate_ue新地址二ue_separate_ue新地址三',
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* 'srcUrl': '原始地址一ue_separate_ue原始地址二ue_separate_ue原始地址三'，
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* 'tip' : '状态提示'
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* }
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*/
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echo "{'url':'" . implode( "ue_separate_ue" , $tmpNames ) . "','tip':'远程图片抓取成功！','srcUrl':'" . $uri . "'}";
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} |