What steps should be taken to troubleshoot and resolve a "Call to undefined function" error in PHP scripts?

To troubleshoot and resolve a "Call to undefined function" error in PHP scripts, the first step is to ensure that the function being called is defined within the script or included from an external file. Check for any typos in the function name or file path. If the function is defined in an external file, make sure to include or require that file before calling the function. 

// Example code snippet to resolve "Call to undefined function" error
// Ensure the function is defined or included before calling it
require_once 'functions.php'; // Include the file where the function is defined

// Call the function after ensuring it is defined or included
$result = myFunction();

Keywords

PHP troubleshooting undefined function error resolution

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