What are some best practices for debugging PHP scripts to identify and fix errors like undefined functions?

When encountering errors like undefined functions in PHP scripts, it is essential to first check if the function is indeed defined or if there are any typos in the function name. One common reason for this error is that the function is not loaded or included in the script. To fix this issue, make sure to include the file where the function is defined or define the function within the script itself. 

// Check if the function is defined before calling it
if (!function_exists('your_function_name')) {
    // Include the file where the function is defined
    include 'your_function_file.php';
}

// Call the function
your_function_name();

Keywords

PHP debugging undefined functions error handling troubleshooting

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