Php method for detecting the existence of a url

This article mainly introduces php's method to check whether a url exists. It involves the get_headers and regular expression matching techniques in php. It is of great practical value. For more information, see

This article mainly introduces php's method to check whether a url exists. It involves the get_headers and regular expression matching techniques in php. It is of great practical value. For more information, see

This example describes how to check whether a url exists in php. Share it with you for your reference. The details are as follows:

The Code is as follows:

Function url_exists ($ url ){
$ Hdrs = @ get_headers ($ url );
Return is_array ($ hdrs )? Preg_match ('/^ HTTP \/\ d + \\. \ d + \ s + 2 \ d \ s +. * $/', $ hdrs [0]): false;
}

I hope this article will help you with php programming.

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