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 . ' ' . $p2; } function multiply_meta($p1, $p2) { echo $p1 * $p2; } function add_meta($p1, $p2) { echo $p1 + $p2; } 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"; Observer::notify('event1', array(1, 2)); echo "Notifying of event 2 \r\n"; Observer::notify('event2', array(3, 4)); echo "Notifying of event 3 \r\n"; 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)
8.3.40.0150.00018.76
8.3.30.0100.00319.21
8.3.20.0040.00420.20
8.3.10.0090.00023.67
8.3.00.0030.00519.25
8.2.170.0160.00622.96
8.2.160.0100.00320.16
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0120.00626.16
8.2.120.0030.00621.09
8.2.110.0040.00421.96
8.2.100.0040.00817.84
8.2.90.0030.00619.17
8.2.80.0050.00317.97
8.2.70.0030.00617.50
8.2.60.0040.00418.04
8.2.50.0000.00818.07
8.2.40.0040.00418.16
8.2.30.0020.00518.14
8.2.20.0020.00517.70
8.2.10.0030.00518.20
8.2.00.0000.00717.68
8.1.270.0050.00323.92
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0040.00423.60
8.1.230.0000.01019.12
8.1.220.0000.00917.74
8.1.210.0030.00518.77
8.1.200.0070.00317.36
8.1.190.0000.00817.35
8.1.180.0000.00818.10
8.1.170.0090.00018.49
8.1.160.0000.00722.04
8.1.150.0030.00619.01
8.1.140.0000.00817.48
8.1.130.0040.00417.96
8.1.120.0040.00417.46
8.1.110.0040.00417.45
8.1.100.0000.00717.34
8.1.90.0040.00417.55
8.1.80.0040.00417.38
8.1.70.0030.00317.46
8.1.60.0050.00517.65
8.1.50.0030.00617.57
8.1.40.0000.00817.56
8.1.30.0030.00617.64
8.1.20.0000.01117.71
8.1.10.0000.00817.54
8.1.00.0030.00517.41
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0030.00318.40
8.0.270.0000.00717.29
8.0.260.0030.00317.39
8.0.250.0030.00316.86
8.0.240.0050.00316.98
8.0.230.0040.00416.92
8.0.220.0030.00316.94
8.0.210.0030.00316.92
8.0.200.0000.00616.84
8.0.190.0050.00216.99
8.0.180.0030.00317.00
8.0.170.0050.00216.98
8.0.160.0000.00816.91
8.0.150.0040.00416.73
8.0.140.0060.00316.77
8.0.130.0030.00313.38
8.0.120.0040.00416.89
8.0.110.0040.00416.89
8.0.100.0030.00516.97
8.0.90.0000.00716.75
8.0.80.0060.01516.94
8.0.70.0040.00416.88
8.0.60.0050.00316.93
8.0.50.0040.00416.77
8.0.30.0130.01117.12
8.0.20.0100.00917.40
8.0.10.0040.00417.03
8.0.00.0070.01416.87
7.4.330.0070.00015.00
7.4.320.0060.00016.62
7.4.300.0000.00716.69
7.4.290.0000.00716.60
7.4.280.0080.00016.53
7.4.270.0000.00816.56
7.4.260.0030.00316.50
7.4.250.0000.00716.49
7.4.240.0020.00516.55
7.4.230.0060.00316.64
7.4.220.0090.00916.65
7.4.210.0070.01116.45
7.4.200.0030.00316.61
7.4.160.0090.00616.36
7.4.150.0060.01217.40
7.4.140.0110.00617.86
7.4.130.0170.00716.60
7.4.120.0080.01016.49
7.4.110.0030.02016.53
7.4.100.0110.01116.37
7.4.90.0060.01216.60
7.4.80.0070.01019.39
7.4.70.0100.00716.51
7.4.60.0080.00816.55
7.4.50.0080.00016.39
7.4.40.0040.01216.28
7.4.30.0000.01616.56
7.4.00.0090.00714.91
7.3.330.0000.00613.16
7.3.320.0000.00513.45
7.3.310.0000.00716.20
7.3.300.0030.00316.25
7.3.290.0110.00316.34
7.3.280.0070.01416.34
7.3.270.0120.00817.40
7.3.260.0030.01416.60
7.3.240.0070.01616.32
7.3.230.0090.00616.39
7.3.210.0130.00316.43
7.3.200.0170.00919.39
7.3.190.0070.01016.54
7.3.180.0100.01316.52
7.3.170.0080.00816.34
7.3.160.0030.01316.26
7.3.120.0100.00315.13
7.3.110.0060.01114.81
7.3.100.0080.00614.74
7.3.90.0050.01014.83
7.3.80.0020.01014.91
7.3.70.0070.01014.95
7.3.60.0050.00814.77
7.3.50.0070.00614.70
7.3.40.0060.00814.95
7.3.30.0020.01414.87
7.3.20.0080.00316.56
7.3.10.0120.00116.62
7.3.00.0060.01016.61
7.2.330.0120.00616.91
7.2.320.0130.00816.66
7.2.310.0070.01016.60
7.2.300.0030.01316.74
7.2.290.0100.01016.61
7.2.250.0000.01815.17
7.2.240.0070.01214.86
7.2.230.0090.00215.07
7.2.220.0070.00415.08
7.2.210.0050.01315.06
7.2.200.0090.00814.99
7.2.190.0070.00315.23
7.2.180.0070.01014.89
7.2.170.0110.00515.13
7.2.160.0100.00314.90
7.2.150.0100.00716.87
7.2.140.0070.00716.87
7.2.130.0010.00916.88
7.2.120.0050.01116.82
7.2.110.0060.00516.94
7.2.100.0070.01016.73
7.2.90.0080.00516.91
7.2.80.0080.00716.84
7.2.70.0040.01116.95
7.2.60.0070.00716.80
7.2.50.0050.01016.74
7.2.40.0100.00516.91
7.2.30.0040.01116.92
7.2.20.0060.00816.92
7.2.10.0080.00616.96
7.2.00.0050.00817.71
7.1.330.0070.00815.72
7.1.320.0070.00715.70
7.1.310.0050.01115.88
7.1.300.0070.00915.81
7.1.290.0080.00615.67
7.1.280.0030.00815.67
7.1.270.0030.00715.85
7.1.260.0100.00315.78
7.1.250.0060.00615.85
7.1.200.0070.00015.66
7.1.100.0060.00618.37
7.1.70.0080.00017.09
7.1.60.0090.01519.40
7.1.50.0120.01216.86
7.1.00.0070.07322.43
7.0.200.0050.00316.47
7.0.140.0070.06722.04
7.0.60.0100.03319.97
7.0.50.0030.07717.91
7.0.40.0100.08320.26
7.0.30.0230.08020.06
7.0.20.0270.05320.10
7.0.10.0100.03720.30
7.0.00.0030.09020.27
5.6.280.0100.06721.00
5.6.210.0070.08720.61
5.6.200.0130.07318.16
5.6.190.0030.08720.77
5.6.180.0300.07320.55
5.6.170.0100.05020.62
5.6.160.0170.07320.54
5.6.150.0000.04718.18
5.6.140.0030.06718.21
5.6.130.0030.06018.23
5.6.120.0030.09021.06
5.6.110.0030.04020.89
5.6.100.0070.07721.12
5.6.90.0070.05721.00
5.6.80.0070.07720.43
5.5.350.0300.06020.48
5.5.340.0030.07317.96
5.5.330.0000.04720.29
5.5.320.0200.07020.36
5.5.310.0130.04720.29
5.5.300.0030.04717.96
5.5.290.0070.08317.93
5.5.280.0130.06720.68
5.5.270.0030.08020.80
5.5.260.0130.05020.89
5.5.250.0030.04020.63
5.5.240.0200.06320.24
5.4.450.0900.05019.46
5.4.440.0670.06719.28
5.4.430.0530.06019.55
5.4.420.0400.04719.44
5.4.410.0970.05719.18
5.4.400.0370.07318.77
5.4.390.0500.05718.80
5.4.380.0100.05318.50
5.4.370.0170.04718.70
5.4.360.0130.05018.46
5.4.350.0070.03912.02
5.4.340.0070.03912.03
5.4.320.0060.03912.51
5.4.310.0050.03712.52
5.4.300.0070.03512.52
5.4.290.0060.03712.51
5.4.280.0020.03812.41
5.4.270.0060.03612.41
5.4.260.0030.04012.41
5.4.250.0050.03812.41
5.4.240.0090.03612.41
5.4.230.0040.04112.40
5.4.220.0100.03612.41
5.4.210.0080.03512.40
5.4.200.0040.04012.40
5.4.190.0040.03812.40
5.4.180.0050.03712.40
5.4.170.0060.03612.40
5.4.160.0050.03712.40
5.4.150.0060.03612.40
5.4.140.0070.04012.08
5.4.130.0040.03912.07
5.4.120.0040.03612.02
5.4.110.0040.03712.02
5.4.100.0050.03512.02
5.4.90.0030.03912.02
5.4.80.0070.03912.02
5.4.70.0060.03812.02
5.4.60.0070.03612.02
5.4.50.0070.03512.02
5.4.40.0050.04012.00
5.4.30.0080.03912.00
5.4.20.0020.04112.00
5.4.10.0060.03412.00
5.4.00.0040.03811.49
5.3.290.0070.03812.80
5.3.280.0070.03612.71
5.3.270.0060.03912.72
5.3.260.0040.04012.72
5.3.250.0080.03412.72
5.3.240.0060.03712.72
5.3.230.0060.03712.71
5.3.220.0050.03712.68
5.3.210.0070.03612.68
5.3.200.0130.02912.68
5.3.190.0100.03312.68
5.3.180.0070.03512.67
5.3.170.0040.03812.67
5.3.160.0050.03712.67
5.3.150.0070.04112.68
5.3.140.0070.03812.66
5.3.130.0040.04612.66
5.3.120.0040.04212.66
5.3.110.0040.04112.66
5.3.100.0080.03412.13
5.3.90.0030.03912.11
5.3.80.0020.03912.10
5.3.70.0050.04312.10
5.3.60.0050.03612.09
5.3.50.0040.03812.04
5.3.40.0040.03812.04
5.3.30.0050.03512.00
5.3.20.0040.03611.78
5.3.10.0040.03611.74
5.3.00.0060.03511.73
5.2.170.0060.0359.23
5.2.160.0040.0309.23
5.2.150.0040.0319.23
5.2.140.0050.0309.23
5.2.130.0050.0399.19
5.2.120.0070.0269.20
5.2.110.0040.0309.20
5.2.100.0030.0309.19
5.2.90.0030.0309.20
5.2.80.0040.0319.18
5.2.70.0030.0329.19
5.2.60.0030.0329.14
5.2.50.0050.0309.11
5.2.40.0050.0289.09
5.2.30.0040.0319.07
5.2.20.0040.0299.05
5.2.10.0050.0278.96
5.2.00.0100.0298.82
5.1.60.0060.0318.11
5.1.50.0060.0278.10
5.1.40.0030.0258.08
5.1.30.0060.0238.43
5.1.20.0070.0248.45
5.1.10.0060.0238.18
5.1.00.0050.0258.18
5.0.50.0040.0206.66
5.0.40.0030.0196.52
5.0.30.0050.0296.33
5.0.20.0040.0186.30
5.0.10.0030.0206.28
5.0.00.0030.0316.27
4.4.90.0040.0144.78
4.4.80.0020.0164.76
4.4.70.0000.0194.75
4.4.60.0020.0164.76
4.4.50.0030.0154.77
4.4.40.0010.0274.71
4.4.30.0020.0164.76
4.4.20.0020.0164.84
4.4.10.0010.0174.85
4.4.00.0020.0254.76
4.3.110.0020.0164.67
4.3.100.0010.0164.66
4.3.90.0050.0124.63
4.3.80.0030.0254.59
4.3.70.0030.0144.63
4.3.60.0030.0194.63
4.3.50.0010.0174.63
4.3.40.0020.0244.54
4.3.30.0030.0143.30
4.3.20.0010.0173.28
4.3.10.0010.0173.24
4.3.00.0130.0237.13

preferences:
43.86 ms | 400 KiB | 5 Q