PHP uses Curl to judge Web page 404 (Nonexistent) method [Original]_php Tips

This example describes the way PHP uses Curl to judge Web page 404 (nonexistent). Share to everyone for your reference, specific as follows:

<?php
/* PHP uses curl to judge 404
 * Created on 2016-6-22
 * Writer www.jb51.net
 /function Chkurl ($url) {
    $handle = Curl_init ($url);
    curl_setopt ($handle, Curlopt_returntransfer, TRUE);
    curl_setopt ($handle, Curlopt_connecttimeout, 10);/Set timeout time
    curl_exec ($handle);
    Check to see if 404 (Web page is not found)
    $httpCode = Curl_getinfo ($handle, curlinfo_http_code);
    if ($httpCode = = 404) {return
      false;
    } else{return
        true;
    }
    Curl_close ($handle);
 $url = "http://www.jb51.net/asdasd.html";
 if (Chkurl ($url) ==true) {
     echo "exists";
 } else{
     echo "does not exist"
 ;
>

The run result is: does not exist

Supplemental: For HTTP request header information, refer to the online tools of this site:

Encyclopedia of HTTP Status codes:
Http://tools.jb51.net/table/http_status_code

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