how to php output in the console code example

Example 1: console php

//display message in console

<?php
	function console_log($msg) {
		echo '<script>' .
          'console.log("'.$msg .' ")</script>';
	}

	console_log("Hi there!");
?>

Example 2: php console print

$a = array(
 null => 'a',
 true => 'b',
 false => 'c',
 0 => 'd',
 1 => 'e',
 '' => 'f'
);

echo count($a), "\n";