PHP method for determining whether to connect to the network

This article mainly introduces PHP's method of determining whether to connect to the network. it uses php to determine whether to enable the Baidu page to determine whether to connect to the network, for more information about how to determine whether PHP is connected to the network, see the example in this article. Share it with you for your reference. The specific implementation method is as follows:

First, write a function.

Function varify_url ($ url) {$ check = @ fopen ($ url, "r"); if ($ check) {$ status = true ;} else {$ status = false;} return $ status ;}

Then you can directly call it as needed.

$ Url = "http://www.baidu.com"; if (varify_url ($ url) {echo"
Congratulation! Your URL $ url: isValid
";} Else {echo"
Error! Your URL: $ url isInvalid
";}

I hope this article will help you with php programming.