What are some best practices for handling undefined function errors in PHP scripts?

When handling undefined function errors in PHP scripts, it is important to first check if the function exists before attempting to call it. This can be done using the `function_exists()` function. If the function does not exist, you can provide a fallback or error message to handle the situation gracefully. 

// Check if the function exists before calling it
if (function_exists('undefined_function')) {
    undefined_function();
} else {
    echo 'The function undefined_function does not exist.';
}

Keywords

error handling undefined function PHP scripts try-catch error_reporting

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