How to determine whether the URL is valid in php

Determine whether a url can be accessed normally to avoid the problem of terminating the program because the url cannot be accessed and a fatal error occurs when usingfile_get_contents

The code is as follows:

$url = ‘http://www.baidu.com'; $ch = curl_init(); $timeout = 10; curl_setopt ($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_HEADER, 1); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout); $contents = curl_exec($ch); if(false == $contents) { echo ‘Curl error: ‘ . curl_error($ch); } else { …. }

In addition, you can use

The code is as follows:

curl_getinfo($ch, CURLINFO_HTTP_CODE);

Get the code returned by the HTTP header file. If it is 200, the url can be accessed normally, but thisfunctionMust be used after curl_exec(), which seems a bit redundant.

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