<?php
function dev_log( $log_data ) {
	$log_file_name = "log";
	if ( ! file_exists( $log_file_name ) ) {
		mkdir( $log_file_name, 0777, true );
	}
	$log_file_data = $log_file_name . '/log_' . date( 'd-M-Y' ) . '.log';
	file_put_contents( $log_file_data, $log_data . "\n", FILE_APPEND );
}
//For wordpress developers: put this function into your plugin or theme (functions.php) and call it to test your data