What steps can be taken to troubleshoot issues with variables not being passed between PHP files?

When variables are not being passed between PHP files, it is likely due to scope issues. To troubleshoot this problem, make sure that the variable is being properly defined and assigned in the sending file, and that it is being correctly accessed in the receiving file. Additionally, check for any typos or syntax errors that may be causing the variable to not be passed correctly. 

// Sending file (file1.php)
$variable = "Hello World!";
include 'file2.php';

// Receiving file (file2.php)
echo $variable;

Keywords

variable scope include statement global keyword $_POST superglobal debugging techniques

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