Search results for: "check"

What are common methods to check if variables are set in PHP?

In PHP, it is common to check if variables are set before using them to prevent errors and undefined variable notices. One common method to check if a...

How can PHP be used to check if JavaScript is active?

To check if JavaScript is active using PHP, you can set a cookie with a JavaScript value and then check for the presence of that cookie in PHP. If the...

How can PHP be used to check if a graphic engine is installed?

To check if a graphic engine is installed using PHP, you can use the `function_exists` function to check if a specific function related to the graphic...

Can PHP be used to check if a website exists?

To check if a website exists using PHP, you can make a simple HTTP request to the website and check the response code. If the response code is in the...

How can PHP be used to check if an ICQ number exists?

To check if an ICQ number exists, you can use the ICQ API to verify the number. You can send a request to the ICQ API with the ICQ number and check th...