解决微信文章图片防盗链

function actionWechatImg() {
    header('Content-type: image/jpg');
    $url = $_GET['url'];
    $refer = "http://www.qq.com/";
    $opt = [ 'http'=>[ 'header'=>"Referer: " . $refer
            ]
           ];
    $context = stream_context_create($opt); 
    $file_contents = file_get_contents($url,false, $context); echo $file_contents;
}

调试用例

<img src="http://xxx.com.cn/weixinimg?url=http%3A%2F%2Fmmbiz.qpic.cn%2Fmmbiz%2F5ddyukqqNUt7ic07NicfAz9u0KrHEibKKMiab2cXA2sIqoj81hRsMZC65DCiaN67FsH2WaXkNOEE0YFLj5OHwIOegIg%2F0%3Fwx_fmt%3Djpeg"> 

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