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In PHP, you can call a variable from another file by using the include or require functions. These functions allow you to include the contents of another file in the current file.
For example, if you have a file named 'variables.php' that contains a variable called $name, you can call this variable in another file by using the include or require function to include the 'variables.php' file.
In the file where you want to call the variable, you can simply use the $name variable as if it was declared in that file.
It's important to note that using include or require will not only bring in variables from the included file, but it will also execute any PHP code within that file. So make sure to only include files that you trust and that contain the necessary variables you need.
How to use unset() function to unset a variable after calling it from another file in php?
To unset a variable after calling it from another file in PHP, you can simply use the unset() function in the file where the variable is being used. Here's an example:
File 1 (variable.php):