php ticks 调试应用

declare(ticks=1);

register_tick_function('do_profile');

register_shutdown_function('show_profile');

 

$profile = array();

$last_time = microtime(true);

 

a();

 

function do_profile() {

    global $profile, $last_time;

    $bt = debug_backtrace();

    if (count($bt) <= 1) {

        return ;

    }

    $frame = $bt[1];

    unset($bt);

    $function = $frame['function'];

    if (!isset($profile[$function])) {

        $profile[$function] = array(

            'time'  => 0,

            'calls' => 0

        );

    }

    $profile[$function]['calls']++;

    $profile[$function]['time'] += (microtime(true) - $last_time);

    $last_time = microtime(true);

}

 

function show_profile() {

    global $profile;

    print_r($profile);

}

 

function a() {

    usleep(50 * 1000);

    b();

}

 

function b() {

    usleep(500 * 1000);

    c();

}

 

function c() {

    usleep(5000 * 1000);

}

输出:

Array

(

    [a] => Array

        (

            [time] => 0.0511748790741

            [calls] => 2

        )

 

    [b] => Array

        (

            [time] => 0.500598907471

            [calls] => 2

        )

 

    [c] => Array

        (

            [time] => 5.00052690506

            [calls] => 1

        )

 

)