3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Observer { static protected $events = array(); static public function register($callable, $event){ if (!isset(self::$events[$event])) { self::$events[$event] = array(); } self::$events[$event][] = $callable; } static public function notify($event, $params = array()) { if (isset(self::$events[$event])) { foreach (self::$events[$event] AS $callable){ call_user_func_array($callable, $params); } } } } function print_meta($p1, $p2) { echo $p1 . ' ' . $p2 . '<br />'; } function multiply_meta($p1, $p2) { echo $p1 * $p2 . '<br />'; } function add_meta($p1, $p2) { echo $p1 + $p2 . '<br />'; } Observer::register('print_meta', 'event1'); Observer::register('multiply_meta', 'event1'); Observer::register('print_meta', 'event2'); Observer::register('add_meta', 'event2'); Observer::register('multiply_meta', 'event3'); Observer::register('add_meta', 'event3'); echo "Notifying of event 1 \r\n<br />"; Observer::notify('event1', array(1, 2)); echo "Notifying of event 2 \r\n<br />"; Observer::notify('event2', array(3, 4)); echo "Notifying of event 3 \r\n<br />"; Observer::notify('event3', array(5, 6));

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).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0120.00618.30
8.3.50.0110.00723.05
8.3.40.0070.00719.01
8.3.30.0070.00719.17
8.3.20.0070.00020.20
8.3.10.0040.00423.48
8.3.00.0080.00017.75
8.2.180.0070.01116.63
8.2.170.0030.01422.96
8.2.160.0100.01020.39
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0090.00926.16
8.2.120.0030.00521.02
8.2.110.0090.01520.95
8.2.100.0040.00817.84
8.2.90.0000.00817.63
8.2.80.0040.00418.90
8.2.70.0000.00917.63
8.2.60.0000.00817.63
8.2.50.0080.00017.63
8.2.40.0070.00018.34
8.2.30.0000.00718.14
8.2.20.0080.00017.65
8.2.10.0050.00318.04
8.2.00.0040.00417.77
8.1.280.0090.00625.92
8.1.270.0040.00422.06
8.1.260.0070.00026.35
8.1.250.0000.00728.09
8.1.240.0140.00722.14
8.1.230.0070.00422.65
8.1.220.0000.00817.74
8.1.210.0050.00318.77
8.1.200.0060.00317.35
8.1.190.0000.00817.23
8.1.180.0030.00618.10
8.1.170.0030.00518.59
8.1.160.0040.00422.00
8.1.150.0040.00418.82
8.1.140.0000.00817.41
8.1.130.0000.00717.84
8.1.120.0040.00417.39
8.1.110.0020.00517.43
8.1.100.0000.00817.43
8.1.90.0050.00217.41
8.1.80.0070.00017.34
8.1.70.0000.00717.41
8.1.60.0050.00517.50
8.1.50.0040.00417.46
8.1.40.0040.00417.54
8.1.30.0080.00017.62
8.1.20.0040.00417.61
8.1.10.0030.00517.58
8.1.00.0030.00617.42
8.0.300.0070.00020.04
8.0.290.0000.00716.63
8.0.280.0030.00318.35
8.0.270.0080.00016.78
8.0.260.0030.00317.16
8.0.250.0040.00416.96
8.0.240.0040.00417.01
8.0.230.0030.00516.98
8.0.220.0050.00216.97
8.0.210.0030.00516.93
8.0.200.0000.00616.91
8.0.190.0070.00016.85
8.0.180.0040.00416.97
8.0.170.0080.00016.83
8.0.160.0030.00517.02
8.0.150.0000.00716.75
8.0.140.0000.00716.93
8.0.130.0040.00413.39
8.0.120.0050.00316.77
8.0.110.0050.00216.93
8.0.100.0040.00416.98
8.0.90.0040.00416.96
8.0.80.0120.00416.90
8.0.70.0040.00416.91
8.0.60.0080.00016.81
8.0.50.0040.00416.93
8.0.30.0140.00717.03
8.0.20.0020.01717.40
8.0.10.0040.00416.93
8.0.00.0140.00916.74
7.4.330.0080.00015.00
7.4.320.0030.00316.43
7.4.300.0030.00316.69
7.4.290.0040.00416.44
7.4.280.0050.00216.46
7.4.270.0030.00316.54
7.4.260.0000.00716.53
7.4.250.0040.00416.59
7.4.240.0020.00516.52
7.4.230.0040.00416.42
7.4.220.0120.00616.71
7.4.210.0070.00716.55
7.4.200.0000.00716.63
7.4.160.0090.00916.66
7.4.150.0100.01017.40
7.4.140.0070.01417.86
7.4.130.0180.00016.66
7.4.120.0100.00716.63
7.4.110.0100.01016.59
7.4.100.0070.01016.69
7.4.90.0180.00016.68
7.4.80.0070.01019.39
7.4.70.0090.00916.52
7.4.60.0100.00716.38
7.4.50.0030.00616.52
7.4.40.0110.00616.54
7.4.30.0100.00616.63
7.4.10.0060.01315.20
7.4.00.0080.01014.75
7.3.330.0000.00613.25
7.3.320.0030.00313.46
7.3.310.0040.00416.48
7.3.300.0040.00416.31
7.3.290.0070.00716.37
7.3.280.0060.00916.35
7.3.270.0120.00417.40
7.3.260.0040.01516.41
7.3.240.0160.00016.68
7.3.230.0130.00316.45
7.3.210.0090.00816.75
7.3.200.0060.01119.39
7.3.190.0080.00916.55
7.3.180.0100.01316.59
7.3.170.0060.01116.54
7.3.160.0090.00616.58
7.3.130.0090.00914.95
7.3.120.0060.01314.85
7.3.110.0040.01515.07
7.3.100.0090.00614.85
7.3.90.0000.01414.83
7.3.80.0000.01114.87
7.3.70.0000.01414.60
7.3.60.0110.00414.74
7.3.50.0090.00614.98
7.3.40.0000.01014.97
7.3.30.0040.01114.76
7.3.20.0040.01216.62
7.3.10.0050.01016.70
7.3.00.0070.00616.54
7.2.330.0140.00516.82
7.2.320.0090.01316.61
7.2.310.0100.01316.78
7.2.300.0130.00316.52
7.2.290.0170.00316.73
7.2.260.0070.01115.06
7.2.250.0090.00915.41
7.2.240.0040.01215.29
7.2.230.0090.00614.97
7.2.220.0070.00714.88
7.2.210.0070.00315.15
7.2.200.0140.00015.14
7.2.190.0060.00314.92
7.2.180.0090.00315.22
7.2.170.0000.00915.13
7.2.160.0070.01014.96
7.2.150.0030.01017.02
7.2.140.0030.00917.01
7.2.130.0020.01116.88
7.2.120.0050.00716.93
7.2.110.0030.01116.86
7.2.100.0060.00617.10
7.2.90.0050.01116.83
7.2.80.0070.00716.91
7.2.70.0030.00816.84
7.2.60.0100.00416.92
7.2.50.0070.00716.77
7.2.40.0080.00716.93
7.2.30.0060.00916.84
7.2.20.0080.00816.91
7.2.10.0070.00717.02
7.2.00.0070.00817.54
7.1.330.0070.01115.77
7.1.320.0080.00615.98
7.1.310.0070.00415.95
7.1.300.0000.01415.82
7.1.290.0080.00415.74
7.1.280.0060.00615.63
7.1.270.0060.00915.96
7.1.260.0090.00615.54
7.1.250.0070.00715.92
7.1.240.0050.00515.76
7.1.230.0020.00715.80
7.1.220.0050.00715.86
7.1.210.0120.00315.89
7.1.200.0040.00815.83
7.1.190.0030.00915.67
7.1.180.0070.00815.58
7.1.170.0040.00815.85
7.1.160.0060.00515.81
7.1.150.0080.00815.71
7.1.140.0030.00815.57
7.1.130.0080.00515.79
7.1.120.0060.00415.59
7.1.110.0070.00615.62
7.1.100.0050.00816.48
7.1.90.0110.00315.72
7.1.80.0090.00515.73
7.1.70.0060.00516.30
7.1.60.0090.00716.96
7.1.50.0090.00816.04
7.1.40.0080.00415.67
7.1.30.0000.01115.85
7.1.20.0050.00815.73
7.1.10.0070.00615.77
7.1.00.0060.03017.92
7.0.330.0030.01015.10
7.0.320.0020.00615.29
7.0.310.0060.00615.52
7.0.300.0070.00515.36
7.0.290.0080.00715.25
7.0.280.0060.00415.36
7.0.270.0040.01115.19
7.0.260.0070.00615.44
7.0.250.0060.00615.51
7.0.240.0050.00815.33
7.0.230.0080.00815.34
7.0.220.0070.00515.39
7.0.210.0020.01315.32
7.0.200.0050.00615.80
7.0.190.0070.00515.42
7.0.180.0040.00615.43
7.0.170.0040.00915.36
7.0.160.0040.00515.34
7.0.150.0070.00515.44
7.0.140.0000.03317.58
7.0.130.0030.00815.36
7.0.120.0090.00615.39
7.0.110.0030.00615.44
7.0.100.0070.00415.53
7.0.90.0060.00515.38
7.0.80.0010.01015.56
7.0.70.0050.00815.56
7.0.60.0040.02516.97
7.0.50.0070.03016.34
7.0.40.0070.02715.67
7.0.30.0190.02515.64
7.0.20.0110.02415.69
7.0.10.0080.03015.74
7.0.00.0030.03015.74
5.6.400.0060.00614.36
5.6.390.0030.01314.50
5.6.380.0060.00514.18
5.6.370.0070.00914.51
5.6.360.0050.00914.65
5.6.350.0020.01214.54
5.6.340.0030.01114.50
5.6.330.0030.01114.32
5.6.320.0040.00614.80
5.6.310.0100.00314.46
5.6.300.0050.00314.42
5.6.290.0020.01014.49
5.6.280.0030.03016.68
5.6.270.0010.01114.28
5.6.260.0050.00514.25
5.6.250.0070.00314.41
5.6.240.0080.00514.59
5.6.230.0110.00414.30
5.6.220.0050.00814.40
5.6.210.0020.03316.60
5.6.200.0100.02715.59
5.6.190.0030.03516.53
5.6.180.0100.01716.41
5.6.170.0090.01916.38
5.6.160.0110.02716.43
5.6.150.0050.03015.55
5.6.140.0060.02815.73
5.6.130.0050.03215.74
5.6.120.0060.01916.46
5.6.110.0060.03216.63
5.6.100.0030.02916.62
5.6.90.0080.03116.65
5.6.80.0050.02516.26
5.6.70.0090.00314.25
5.6.60.0070.00614.34
5.6.50.0040.00514.37
5.6.40.0080.00214.43
5.6.30.0050.00714.50
5.6.20.0050.01014.26
5.6.10.0060.00714.38
5.6.00.0080.00514.37
5.5.380.0080.00212.81
5.5.370.0040.00812.76
5.5.360.0050.00512.77
5.5.350.1190.01715.40
5.5.340.0050.01814.52
5.5.330.0040.02115.37
5.5.320.0180.02515.33
5.5.310.0180.02415.19
5.5.300.0050.03114.56
5.5.290.0060.03114.39
5.5.280.0070.01915.56
5.5.270.0050.02915.48
5.5.260.0090.03115.49
5.5.250.0080.02715.36
5.5.240.0060.01515.24
5.5.230.0060.00512.70
5.5.220.0060.00512.64
5.5.210.0090.00312.73
5.5.200.0050.00712.73
5.5.190.0070.00712.70
5.5.180.0040.00712.73
5.5.170.0090.00312.63
5.5.160.0000.01112.85
5.5.150.0030.00712.89
5.5.140.0040.00612.75
5.5.130.0020.00712.73
5.5.120.0070.00312.77
5.5.110.0070.00412.72
5.5.100.0030.00712.67
5.5.90.0030.00712.84
5.5.80.0070.00312.91
5.5.70.0060.00612.75
5.5.60.0030.00512.70
5.5.50.0080.00512.80
5.5.40.0040.00812.88
5.5.30.0050.00412.84
5.5.20.0030.00712.54
5.5.10.0050.00512.75
5.5.00.0030.00512.66
5.4.450.0280.02214.00
5.4.440.0290.01814.05
5.4.430.0330.01614.00
5.4.420.0200.01814.04
5.4.410.0140.01514.05
5.4.400.0050.01414.02
5.4.390.0270.00913.92
5.4.380.0130.02013.89
5.4.370.0070.02013.79
5.4.360.0090.01713.86
5.4.350.0080.02113.74
5.4.340.0070.02413.77
5.4.330.0070.00211.34
5.4.320.0040.01811.78
5.4.310.0050.01411.74
5.4.300.0080.01211.85
5.4.290.0040.01711.70
5.4.280.0040.02211.76
5.4.270.0040.01711.76
5.4.260.0030.01811.75
5.4.250.0030.01811.68
5.4.240.0050.01511.73
5.4.230.0020.02211.77
5.4.220.0030.01811.70
5.4.210.0030.02111.72
5.4.200.0030.02011.67
5.4.190.0040.01511.77
5.4.180.0060.01511.78
5.4.170.0040.01511.69
5.4.160.0020.01911.73
5.4.150.0060.01511.79
5.4.140.0040.02111.62
5.4.130.0040.01511.69
5.4.120.0050.01611.62
5.4.110.0040.01611.55
5.4.100.0070.01711.68
5.4.90.0040.01711.56
5.4.80.0050.01811.62
5.4.70.0080.01311.54
5.4.60.0050.01311.61
5.4.50.0060.01711.53
5.4.40.0050.01411.53
5.4.30.0070.01311.58
5.4.20.0030.01711.56
5.4.10.0070.01311.60
5.4.00.0050.01711.38
5.3.290.0040.02111.85
5.3.280.0080.02011.80
5.3.270.0050.02511.81
5.3.260.0020.02311.81
5.3.250.0050.02011.81
5.3.240.0070.01911.81
5.3.230.0040.02211.80
5.3.220.0040.02211.79
5.3.210.0040.02111.79
5.3.200.0040.02011.79
5.3.190.0060.02011.79
5.3.180.0070.02011.79
5.3.170.0040.02111.78
5.3.160.0040.02311.79
5.3.150.0050.02311.78
5.3.140.0060.02111.78
5.3.130.0040.02211.78
5.3.120.0020.02511.78
5.3.110.0020.02211.78
5.3.100.0040.02011.51
5.3.90.0020.02311.50
5.3.80.0010.02511.50
5.3.70.0050.02311.50
5.3.60.0040.02611.49
5.3.50.0050.02711.47
5.3.40.0060.02511.47
5.3.30.0060.02111.45
5.3.20.0040.02111.34
5.3.10.0050.02211.32
5.3.00.0040.02311.32
5.2.170.0040.02210.07
5.2.160.0060.01610.07
5.2.150.0050.02010.07
5.2.140.0050.01910.07
5.2.130.0060.01910.05
5.2.120.0010.01810.05
5.2.110.0060.02010.05
5.2.100.0020.02410.04
5.2.90.0040.02110.04
5.2.80.0040.01810.04
5.2.70.0070.01810.04
5.2.60.0040.02310.02
5.2.50.0020.01910.00
5.2.40.0050.01710.00
5.2.30.0030.0199.98
5.2.20.0040.0219.97
5.2.10.0030.0209.93
5.2.00.0060.0219.86
5.1.60.0070.0189.50
5.1.50.0060.0199.50
5.1.40.0030.0179.49
5.1.30.0080.0169.67
5.1.20.0040.0209.68
5.1.10.0050.0179.54
5.1.00.0060.0169.54
5.0.50.0030.0168.78
5.0.40.0040.0128.71
5.0.30.0040.0198.62
5.0.20.0050.0128.60
5.0.10.0060.0138.59
5.0.00.0050.0158.59
4.4.90.0020.0097.84
4.4.80.0020.0127.83
4.4.70.0030.0107.83
4.4.60.0010.0107.83
4.4.50.0040.0077.84
4.4.40.0040.0157.80
4.4.30.0010.0117.83
4.4.20.0030.0087.87
4.4.10.0020.0107.87
4.4.00.0040.0137.83
4.3.110.0010.0107.78
4.3.100.0030.0097.78
4.3.90.0030.0097.77
4.3.80.0020.0147.74
4.3.70.0020.0117.76
4.3.60.0010.0117.76
4.3.50.0030.0077.76
4.3.40.0040.0137.72
4.3.30.0020.0107.10
4.3.20.0010.0117.09
4.3.10.0010.0107.07
4.3.00.0000.01213.43

preferences:
53.83 ms | 401 KiB | 5 Q