Online PHP editor | perf for jVJeS

@ 2014-10-28T07:03:36Z

<?php

/**
 * Social network site where you can see a list of users and "follow" them.
 */

// setup the `Db` object:
require_once 'lib/db.php';

// setup the `Session` object:
require_once 'lib/session.php';

if (!Session::isLoggedIn()) {
    throw new Exception('You must be logged in to view this page');
}

// display a user as html
function displayUser ($user, $tag='div') {
    $full_name = $user->first_name . ' ' . $user->last_name;

    // get user's avatar from 3rd-party avatar service, based on which environment we're running in
    if (strpos($_SERVER['SERVER_NAME'], 'localhost') !== false) {
        $avatar_data = json_decode(file_get_contents('http://dev.avatars.com/user/' . $user->id));
    }
    else {
        $avatar_data = json_decode(file_get_contents('http://www.avatars.com/user/' . $user->id));
    }

?>
    <<?= $tag ?> class="user">
	<a href="/users/<?= $user->id ?>">
	    <img src="<?= $avatar_data->url ?>">
	    <?= $full_name ?>
	</a>
	<a href="?follow=<?= $user->id ?>">Follow</a>
    </<?= $tag ?>>
<?php
}

// check that a user ID is valid (must be a number)
function validateUserId ($id) {
    if (!is_numeric($id)) {
        // log invalid user IDs to help us track down bugs.
        error_log("Invalid user id: {$id}");
        return false;
    }

    return true;
}

// load the user's custom theme config
$theme_filename = dirname(__FILE__) . 'themes/' . Session::getLoggedInUser()->theme_id . '.php';
if (file_exists($theme_filename)) {
    require $theme_filename;
}

// show all users
if (isset($_GET['show-all'])) {
    echo '<ul>';
    foreach (Db::getUsers() as $user) {
        displayUser($user, 'li');
    }
    echo '</ul>';
}
// show a single user
else if (isset($_GET['id'])) {
    $id = $_GET['id'];
    if (!validateUserId($id)) throw new Exception('Please select a valid user ID');
    $user = Db::getUserById($id);
    if (!$user) throw new Exception('Sorry, user not found');

    displayUser($user);
}
// follow a user
else if (isset($_GET['follow']) {
    $id = $_GET['follow'];
    if (!validateUserId($id)) throw new Exception('Please select a valid user ID');
    $user_to_follow = Db::getUserById($id);
    if (!$user_to_follow) throw new Exception('Sorry, user not found');

    $current_user = Session::getLoggedInUser();
    try {
        $current_user->follow($user_to_follow);
    } catch (Exception $e) {
        throw new Exception('Unable to follow at this time');
    }

    // inform the user that they have a new follower.
    mail(
        $user_to_follow->email,
        'You have a new follower!',
        "{$current_user->username} is now following you.",
        'From: notifications@awesome-social-network.com'
    );

    // also update the activity feed, so users can see what others are doing on the site.
    Db::updateActivityFeed(array(
        'action' => 'follow',
        'from' => $current_user->id,
        'to' => $user_to_follow->id,
        'timestamp' => time(),
    ));

    echo 'Followed! <a href="/">Return to home</a>';
}

?>

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
5.6.15	0.007	0.040	18.13
5.6.14	0.013	0.077	18.16
5.6.13	0.013	0.083	18.29
5.6.12	0.013	0.073	21.14
5.6.11	0.010	0.067	20.98
5.6.10	0.010	0.033	21.00
5.6.9	0.000	0.067	20.99
5.6.8	0.003	0.080	20.56
5.6.7	0.413	0.037	20.30
5.5.30	0.007	0.040	18.07
5.5.29	0.003	0.087	17.98
5.5.28	0.007	0.087	20.79
5.5.27	0.003	0.050	20.88
5.5.26	0.003	0.083	20.89
5.5.25	0.003	0.040	20.79
5.5.24	0.013	0.033	20.29
5.4.45	0.050	0.060	19.48
5.4.44	0.055	0.062	19.45
5.4.43	0.072	0.052	19.43
5.4.42	0.057	0.023	19.57
5.4.41	0.050	0.028	19.42
5.4.40	0.060	0.032	19.24
5.4.39	0.050	0.028	19.14
5.4.38	0.055	0.023	19.05
5.4.37	0.050	0.028	18.98
5.4.36	0.055	0.035	19.10
5.4.35	0.057	0.038	19.09
5.4.34	0.021	0.047	14.41
5.4.32	0.023	0.043	14.71
5.4.31	0.028	0.043	14.64
5.4.30	0.019	0.049	14.73
5.4.29	0.021	0.047	14.78
5.4.28	0.016	0.044	14.65
5.4.27	0.019	0.041	14.71
5.4.26	0.021	0.048	14.70
5.4.25	0.022	0.044	14.60
5.4.24	0.017	0.040	14.66
5.4.23	0.023	0.045	14.57
5.4.22	0.020	0.041	14.66
5.4.21	0.019	0.041	14.71
5.4.20	0.024	0.049	14.65
5.4.19	0.018	0.041	14.65
5.4.18	0.020	0.042	14.69
5.4.17	0.020	0.040	14.74
5.4.16	0.019	0.041	14.73
5.4.15	0.021	0.038	14.55
5.4.14	0.019	0.045	13.52
5.4.13	0.022	0.038	13.59
5.4.12	0.019	0.042	13.50
5.4.11	0.019	0.041	13.57
5.4.10	0.017	0.042	13.60
5.4.9	0.018	0.038	13.57
5.4.8	0.014	0.043	13.47
5.4.7	0.018	0.038	13.57
5.4.6	0.015	0.041	13.55
5.4.5	0.020	0.040	13.42
5.4.4	0.020	0.041	13.52
5.4.3	0.022	0.043	13.51
5.4.2	0.022	0.044	13.43
5.4.1	0.023	0.043	13.53
5.4.0	0.016	0.042	13.02
5.3.29	0.024	0.049	13.38
5.3.28	0.026	0.046	13.34
5.3.27	0.017	0.047	13.36
5.3.26	0.021	0.048	13.36
5.3.25	0.023	0.043	13.32
5.3.24	0.018	0.046	13.34
5.3.23	0.020	0.041	13.31
5.3.22	0.023	0.048	13.32
5.3.21	0.022	0.042	13.28
5.3.20	0.019	0.046	13.33
5.3.19	0.027	0.043	13.27
5.3.18	0.019	0.044	13.30
5.3.17	0.021	0.044	13.28
5.3.16	0.022	0.040	13.31
5.3.15	0.023	0.040	13.32
5.3.14	0.020	0.045	13.29
5.3.13	0.026	0.044	13.26
5.3.12	0.022	0.043	13.26
5.3.11	0.009	0.043	13.26
5.3.10	0.009	0.043	12.75
5.3.9	0.019	0.036	12.84
5.3.8	0.020	0.041	12.75
5.3.7	0.006	0.041	12.78
5.3.6	0.006	0.045	12.81
5.3.5	0.016	0.042	12.66
5.3.4	0.008	0.040	12.73
5.3.3	0.008	0.040	12.59
5.3.2	0.008	0.038	12.40
5.3.1	0.008	0.047	12.36
5.3.0	0.008	0.043	12.45
5.2.17	0.008	0.034	9.89
5.2.16	0.005	0.036	9.86
5.2.15	0.010	0.033	9.87
5.2.14	0.006	0.034	9.88
5.2.13	0.008	0.035	9.83
5.2.12	0.002	0.040	9.92
5.2.11	0.007	0.033	9.85
5.2.10	0.008	0.030	9.86
5.2.9	0.009	0.035	9.89
5.2.8	0.004	0.035	9.80
5.2.7	0.004	0.039	9.81
5.2.6	0.009	0.038	9.87
5.2.5	0.007	0.035	9.74
5.2.4	0.005	0.032	9.70
5.2.3	0.004	0.040	9.68
5.2.2	0.006	0.033	9.72
5.2.1	0.005	0.031	9.58
5.2.0	0.007	0.032	9.42
5.1.6	0.004	0.027	8.72
5.1.5	0.007	0.026	8.80
5.1.4	0.013	0.030	8.67
5.1.3	0.016	0.038	9.05
5.1.2	0.010	0.027	9.15
5.1.1	0.004	0.039	8.84
5.1.0	0.014	0.030	8.77
5.0.5	0.007	0.021	7.27
5.0.4	0.004	0.024	7.16
5.0.3	0.002	0.036	6.97
5.0.2	0.008	0.021	6.92
5.0.1	0.009	0.021	6.90
5.0.0	0.004	0.036	6.92
4.4.9	0.002	0.020	5.25
4.4.8	0.006	0.016	5.23
4.4.7	0.002	0.019	5.24
4.4.6	0.002	0.021	5.26
4.4.5	0.003	0.021	5.27
4.4.4	0.006	0.027	5.24
4.4.3	0.006	0.022	5.27
4.4.2	0.009	0.017	5.35
4.4.1	0.004	0.020	5.36
4.4.0	0.002	0.028	5.30
4.3.11	0.003	0.017	5.24
4.3.10	0.006	0.014	5.24
4.3.9	0.003	0.017	5.22
4.3.8	0.003	0.029	5.19
4.3.7	0.002	0.018	5.22
4.3.6	0.007	0.015	5.22
4.3.5	0.002	0.019	5.22
4.3.4	0.005	0.026	5.17
4.3.3	0.006	0.018	4.34
4.3.2	0.004	0.016	4.32
4.3.1	0.003	0.016	4.29
4.3.0	0.008	0.022	6.87

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