How can the "undefined function" error be resolved when trying to include and call a function in PHP?

When encountering an "undefined function" error in PHP, it typically means that the function being called has not been defined or included in the current script. To resolve this error, make sure that the function definition is included or loaded before calling the function in your PHP script. 

<?php
// Include the file containing the function definition
include 'functions.php';

// Call the function after including the file
myFunction();
?>

Keywords

PHP function include error resolution

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