File_get_contents's high-level usage sharing

about the high-level usage of file_get_contents, first of all solve the file_get_contents timeout problem, after the time-out error, like JS in the settimeout like a try, Error more than 3 or 5 times after the confirmation is unable to connect the server and completely give up.

Here's a quick introduction to two workarounds:

One, increase the time limit for timeouts

Note: Set_time_limit only sets the time-out for your PHP program, not the time-out for the file_get_contents function to read the URL.

At first I thought set_time_limit could also affect File_get_contents, which was later tested to be ineffective. The real modification file_get_contents delay can be used with the timeout parameter of the resource $context:

The PHP program code is as follows:

$opts = Array ('    http ' =>array (      ' method ' = ' = ' GET ',      ' timeout ' =>60,    )); $context = Stream_ Context_create ($opts); $html =file_get_contents (' http://www.php.cn ', false, $context); Fpassthru ($FP);

Second, several attempts

The PHP program code is as follows:

$cnt =0;while ($cnt < 3 && ($str = @file_get_contents (' http ... ') ===false) {   $cnt + +;}

The above method against timeout is OK. The following is a demonstration of using file_get_contents to implement post, as follows:
PHP program code

function Post ($url, $post = null) {    $context = array ();    if (Is_array ($post)) {      ksort ($post);      $context [' http '] = Array (        ' timeout ' =>60,        ' method ' = ' POST ',        ' content ' = Http_build_query ($ Post, ', ' & ')       ;    }    Return file_get_contents ($url, False, Stream_context_create ($context));} $data = Array (    ' name ' = = ' Test ',    ' email ' = ' test@gmail.com ',    ' submit ' = ' submit ',); Echo Post ( ' http://www.php.cn ', $data);

Note the set_time_out of the document header or the entire document is timed out.

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