Workaround for PHP request remote address setting time-out

This article mainly introduces the PHP request remote address setting Timeout time resolution method, the interest friend's reference, hoped to be helpful to everybody.

PHP Request remote Address set time-out, mainly on the file_get_contents, fopen, curl, the three simple common functions to set the time-out method, generally recommended using curl, the best performance, the highest efficiency.

1. file_get_contents Request Timeout setting

$timeout = Array (' http ' = = ' Array (' timeout ' =>5//set a time-out, in seconds); $ctx = Stream_context_create ($timeout); $text = File_get_contents ("http://www.jb51.net/", 0, $ctx);

2. fopen Request Timeout setting

$timeout = Array (' http ' = = Array (' timeout ' = 5//Set a time-out, in seconds), $ctx = Stream_context_create ($timeout); if ($fp = f Open ("http://www.jb51.net/", "R", False, $ctx)) {while ($c = Fread ($fp, 8192)) {echo $c;} Fclose ($FP);}

3. Curl Request Timeout setting

CURL is a common Lib library that accesses the HTTP protocol interface, with high performance, and some features that are supported concurrently.

curl_setopt ($ch, opt) can set some timeout settings, mainly including:

A, Curlopt_timeout sets the maximum number of seconds that curl is allowed to execute.

B, Curlopt_timeout_ms sets the maximum number of milliseconds that curl is allowed to perform.

C, curlopt_connecttimeout the time to wait before initiating the connection, and if set to 0, wait indefinitely.

D, Curlopt_connecttimeout_ms the time, in milliseconds, to try to connect the wait. If set to 0, the wait is infinite. E, Curlopt_dns_cache_timeout sets the time to save the DNS information in memory, which defaults to 120 seconds.

$ch = Curl_init (); curl_setopt ($ch, Curlopt_url, $url); curl_setopt ($ch, curlopt_returntransfer,1); curl_setopt ($ch, CURLOPT_TIMEOUT,60);  Just set the number of seconds to curl_setopt ($ch, Curlopt_httpheader, $headers); curl_setopt ($ch, curlopt_useragent, $defined _vars[' Http_user_agent ']);

The above is the whole content of this article, I hope that everyone's study has helped.