What debugging techniques can be used in PHP to identify and resolve errors effectively?

One effective debugging technique in PHP is to use the error_reporting function to display errors and warnings. By setting the error_reporting level to E_ALL, you can ensure that all errors are reported. Another useful technique is to use the var_dump function to print out the contents of variables and arrays, helping to identify unexpected values or types. Additionally, utilizing the die function can help pinpoint where in the code an error is occurring by halting the script's execution at a specific point.

// Set error reporting level to display all errors and warnings
error_reporting(E_ALL);

// Use var_dump to print out variable contents for debugging
var_dump($variable);

// Halt script execution at a specific point to identify errors
die('Error occurred here');