PHP RUNTIME FOR EACH FUNCTION EXECUTED

<?php
 
# DEBUG
//error_reporting(0);
$script_stats = array();
$time = microtime(true);
 
function track_stats(){
    global $script_stats,$time;
    $trace = debug_backtrace();
    $exe_time = (microtime(true) - $time) * 1000;
    if ( $trace[1]["args"] ) {
   	    $func_args = implode(", ",$trace[1]["args"]);
   	} else {
   		$func_args = '';
   	}
    $script_stats[] = array(
        "current_time" => microtime(true),
        "memory" => memory_get_usage(true),
        "file" => $trace[1]["file"].': '.$trace[1]["line"],
        "function" => '<strong>'.$trace[1]["function"].'</strong>'.'('.$func_args.')',
        "called_by" => $trace[2]["function"].' in '.$trace[2]["file"].': '.$trace[2]["line"],
        "ns" => $exe_time
        );
    $time = microtime(true);
    }
 
declare(ticks = 1);
register_tick_function("track_stats");
 
# /DEBUG
?>
 
WEBSITE
 
<?php
sleep(5);
unregister_tick_function("track_stats");
 
echo '<table>';
foreach ($script_stats as $counter => $line) {
	echo '<tr>';
	echo '<td>'.$counter.'</td>';	
	echo '<td>'.$line['current_time'].'</td>';	
	echo '<td>'.$line['memory'].'</td>';		
	echo '<td>'.$line['file'].'</td>';		
	echo '<td>'.$line['function'].'</td>';		
	echo '<td>'.$line['called_by'].'</td>';	
	echo '<td>'.$line['ns'].'</td>';		
	echo '</tr>';	
}
echo '</table>';
?>