PHP項(xiàng)目中CURL出現(xiàn)內(nèi)存泄露如何解決

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php有什么用

php是一個嵌套的縮寫名稱，是英文超級文本預(yù)處理語言，它的語法混合了C、Java、Perl以及php自創(chuàng)新的語法，主要用來做網(wǎng)站開發(fā)，許多小型網(wǎng)站都用php開發(fā)，因?yàn)閜hp是開源的，從而使得php經(jīng)久不衰。

curl配置平淡無奇，長時間運(yùn)行發(fā)現(xiàn)一個嚴(yán)重問題，內(nèi)存泄露！不論用單線程和多線程都無法避免！是curl訪問https站點(diǎn)的時候有bug！

內(nèi)存泄露可以通過linux的top命令發(fā)現(xiàn)，使用php函數(shù)memory_get_usage()不會發(fā)現(xiàn)。

代碼如下:

[CURLOPT_HTTPPROXYTUNNEL] = true;
[CURLOPT_SSL_VERIFYPEER] = false;
[CURLOPT_SSL_VERIFYHOST] = false;

CURLOPT_HTTPPROXYTUNNEL具體說明stackoverflow上有，直接貼原文：

Without CURLOPT_HTTPPROXYTUNNEL

Without CURLOPT_HTTPPROXYTUNNEL : You just use the proxy address/port as a destination of your HTTP request. The proxy will read the HTTP headers of your query, forward your request to the destination (with your HTTP headers) and then write the response to you.

Example steps :

1）HTTP GET /index.html sent to 1.1.1.1 (proxy)
2）1.1.1.1 receive request and parse header for getting the final destination of your HTTP request.
3）1.1.1.1 forward your query and headers to www.site.com (destination in request headers).
4）1.1.1.1 write back to you the response receive from www.site.com

With CURLOPT_HTTPPROXYTUNNEL

With CURLOPT_HTTPPROXYTUNNEL : You ask the proxy to open a direct binary connection (like HTTPS, called a TCP Tunnel) directly to your destination by doing a CONNECT HTTP request. When the tunnel is ok, the proxy write you back a HTTP/1.1 200 Connection established. When it received your browser start to query the destination directly : The proxy does not parse HTTP headers and theoretically does not read tunnel datas, it just forward it, thats why it is called a tunnel !

Example steps :

1）HTTP CONNECT sent to 1.1.1.1
2）1.1.1.1 receive HTTP CONNECT and get the ip/port of your final destination (header field of HTTP CONNECT).
3）1.1.1.1 open a TCP Socket by doing a TCP handshake to your destination 2.22.63.73:80 (ip/port of www.site.com).
4）1.1.1.1 Make a tunnel by piping your TCP Socket to the TCP Socket opened to 2.22.63.73:80and then write you back HTTP/1.1 200 Connection established witch means that your client can now make your query throw the TCP Tunnel (TCP datas received will be transmited directly to server and vice versa).

http://stackoverflow.com/questions/12288956/what-is-the-curl-option-curlopt-httpproxytunnel-means

上述就是小編為大家分享的PHP項(xiàng)目中CURL出現(xiàn)內(nèi)存泄露如何解決了，如果剛好有類似的疑惑，不妨參照上述分析進(jìn)行理解。如果想知道更多相關(guān)知識，歡迎關(guān)注億速云行業(yè)資訊頻道。