console.log() PHP variables

functions.php

<?php
if ( ! function_exists( 'console_log' ) ) {
	function console_log( $var ) {
		$backtrace = debug_backtrace();
		$log[] = sprintf(
			'"DEBUG: On %s at line %d:"',
			str_replace( $_SERVER['DOCUMENT_ROOT'], '', $backtrace[0]['file'] ),
			$backtrace[0]['line']
		);
		$log[] = sprintf( '"(%s)"', gettype( $var ) );
		$log[] = json_encode( $var );

		printf( '<script class="console-log-debug">console.log(%s);</script>', implode( ', ', $log ) );
	}
}