In what ways can the lack of proper error handling and debugging techniques in PHP scripts lead to issues like broken links and unresponsive pages?

Lack of proper error handling and debugging techniques in PHP scripts can lead to issues like broken links and unresponsive pages because errors are not being caught and addressed appropriately. This can result in users encountering blank pages or error messages instead of the expected content. Implementing error handling and debugging techniques allows developers to identify and fix issues quickly, ensuring a smoother user experience.

// Enable error reporting and display errors
error_reporting(E_ALL);
ini_set('display_errors', 1);

// Custom error handler function
function customErrorHandler($errno, $errstr, $errfile, $errline) {
    echo "<b>Error:</b> [$errno] $errstr<br>";
    echo "Error on line $errline in $errfile<br>";
}

// Set custom error handler
set_error_handler("customErrorHandler");