How can debugging techniques be effectively used in PHP to identify issues like array problems or errors in function parameters?

To identify issues like array problems or errors in function parameters in PHP, debugging techniques can be effectively used. One way to do this is by using functions like var_dump() or print_r() to inspect the contents of arrays or variables, and using error_reporting() to display any errors related to function parameters. Example:

// Debugging array problems using var_dump()
$array = [1, 2, 3];
var_dump($array);

// Debugging function parameters using error_reporting()
error_reporting(E_ALL);
function testFunction($param) {
    return $param;
}

testFunction(); // This will generate an error due to missing parameter