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Subtract hours from a time and date using PHP.

This is a tutorial on how to subtract hours from a date and time using PHP.

PHP: Get the last modification time of a file.

This is a tutorial on how to get the last modification time of a file using PHP.

Parse an XML string using JavaScript.

In this tutorial, I will show you how to parse an XML string using JavaScript.

PHP: How to close a PDO connection to MySQL.

This is a PHP tutorial on how to close a PDO connection.

JavaScript: Check if a string contains a substring.

This is a tutorial on how to check if a string contains a substring using JavaScript.