Definition: Test typo.php is a PHP script used to test for errors in code. It checks if a PHP function has an error by comparing its signature against an expected one. Definition: Test typo.php, or "testTypeCheck.php", is a script that tests the type of variable names and types in PHP functions to determine if they are correctly formatted according to PHP's conventions. It evaluates a given code snippet and checks for any unexpected types or variable lengths that violate PHP's naming or data type rules. This script helps ensure consistent coding practices, preventing syntax errors from being introduced into the program.