PHP simple to detect whether the Web site can be opened in a normal way _php tips

This article is an example of how the PHP simple detection URL can be opened in a normal way. Share to everyone for your reference, specific as follows:

This is a check whether the Web site can normally open the PHP code, the following code to detect whether a Web site can be normal access, if normal will return the HTTP status code 200, if the other is not normal; This code we can use a lot of places, such as the caching of the links of the ICO icon can be used, The cache first detects whether the Web site is normal, if you normally cache the ICO icon, otherwise call a default icon file.

The code is as follows:

<?php
*
 * Created on 2016-9-4
 *
 /function Httpcode ($url) {
  $ch = Curl_init ();
  $timeout = 3;
  curl_setopt ($ch, curlopt_followlocation,1);
  curl_setopt ($ch, curlopt_returntransfer,1);
  curl_setopt ($ch, Curlopt_header, 1);
  curl_setopt ($ch, Curlopt_connecttimeout, $timeout);
  curl_setopt ($ch, Curlopt_url, $url);
  Curl_exec ($ch);
  return $httpcode = Curl_getinfo ($ch, curlinfo_http_code);
  Curl_close ($ch);
echo "To judge the links of the cloud-dwelling communities:". Httpcode (' http://www.jb51.net ');
? >
<br/>
If display 200 is normal, if other values indicate abnormal, and 3 after $timeout is the set timeout number of seconds.

The results of the operation are shown below:

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I hope this article will help you with the PHP program design.