Online PHP editor | perf for 4aVQR

<?php /*{ "_id" : ObjectId("595baefce2810a6a8a94fe2d"), "user" : "1234abc", "type" : "session-started", "name" : "moja o sesja", "reference_id" : "hippo-123", "created_on" : ISODate("2017-01-01T01:01:01.123Z") }*/ class A { private static $_id = 0x10a6a8a94fe2d; private $user; private $type; private $reference_id; private $created_on; public function __construct($user, $type, $reference_id, $created_on) { $this->user = $user; $this->type = $type; $this->reference_id = $reference_id; $this->created_on = $created_on; } public function __toString() { return sprintf('{ "_id": ObjectId("595baefce28%x"), "user": "%s", "type": "%s", "name": "my %s", "reference_id": "%s%s", "created_on": ISODate("%s.000Z") }', ++self::$_id, $this->user, $this->type, $this->type, $this->user, $this->reference_id ? 'hippo-' . $this->reference_id : '', $this->created_on ); } } $history = [ new A('u1', 'onboarded', '', '2017-01-01T01:01:01'), new A('u1', 'category_activated', 11, '2017-01-01T01:02:01'), new A('u1', 'category_started', 11, '2017-01-01T01:03:01'), new A('u1', 'series_started', 21, '2017-01-01T01:04:01'), new A('u1', 'session_started', 31, '2017-01-01T01:05:01'), new A('u1', 'session_progress_updated', 31, '2017-01-01T01:06:01'), new A('u1', 'session_completed', 31, '2017-01-01T01:07:01'), new A('u1', 'session_started', 32, '2017-01-01T01:08:01'), new A('u1', 'session_completed', 32, '2017-01-01T01:09:01'), // seesion completed (2/2) new A('u1', 'session_started', 33, '2017-01-02T01:10:01'), new A('u1', 'session_completed', 33, '2017-01-02T01:11:01'), // session completed (1/1) new A('u1', 'session_started', 34, '2017-01-03T01:12:01'), // session started (0/1) new A('u1', 'session_completed', 34, '2017-01-04T01:13:01'), // session completed (1/1) new A('u1', 'session_started', 35, '2017-01-05T01:14:01'), new A('u1', 'session_progress_updated', 35, '2017-01-05T01:15:01'), new A('u1', 'session_completed', 35, '2017-01-05T01:16:01'), new A('u1', 'session_started', 36, '2017-01-05T01:17:01'), // session started (1/2) new A('u1', 'session_skipped', 36, '2017-01-06T01:18:01'), // session skipped (0/1) new A('u1', 'session_started', 37, '2017-01-07T01:19:01'), new A('u1', 'session_completed', 37, '2017-01-07T01:20:01'), // session completed (1/1) //new A('u1', 'session_started', 34, '2017-01-09T01:21:01'), // day skipped new A('u1', 'session_started', 38, '2017-01-09T01:21:01'), new A('u1', 'session_completed', 38, '2017-01-09T01:21:01'), ]; echo implode(','$history);

Version	System time (s)	User time (s)	Memory (MiB)
7.1.7	0.000	0.014	16.88
7.1.6	0.021	0.010	35.17
7.1.5	0.017	0.013	34.64
7.1.4	0.018	0.012	34.32
7.1.3	0.019	0.010	34.35
7.1.2	0.022	0.010	34.23
7.1.1	0.000	0.014	16.45
7.1.0	0.012	0.008	16.63
7.0.20	0.003	0.012	16.64
7.0.19	0.006	0.009	16.68
7.0.18	0.004	0.011	16.00
7.0.17	0.007	0.007	16.25
7.0.16	0.006	0.009	16.01
7.0.15	0.006	0.008	16.13
7.0.14	0.003	0.010	16.23
7.0.13	0.003	0.010	16.25
7.0.12	0.009	0.006	16.29
7.0.11	0.004	0.011	16.08
7.0.10	0.007	0.007	16.21
7.0.9	0.010	0.003	16.20
7.0.8	0.003	0.011	16.19
7.0.7	0.008	0.006	16.31
7.0.6	0.032	0.016	15.75
7.0.5	0.042	0.003	16.38
7.0.4	0.036	0.007	16.29
7.0.3	0.003	0.011	16.50
7.0.2	0.004	0.011	16.36
7.0.1	0.000	0.014	14.53
7.0.0	0.034	0.008	14.48