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 . ' ' . $p2 . PHP_EOL; } function multiply_meta($p1, $p2) { echo $p1 * $p2 . PHP_EOL; } function add_meta($p1, $p2) { echo $p1 + $p2 . PHP_EOL; } 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" . PHP_EOL; Observer::notify('event1', array(1, 2)); echo "Notifying of event 2" . PHP_EOL; Observer::notify('event2', array(3, 4)); echo "Notifying of event 3" . PHP_EOL; 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)
8.3.60.0100.00718.55
8.3.50.0120.00723.00
8.3.40.0090.01218.88
8.3.30.0090.00619.04
8.3.20.0040.00420.33
8.3.10.0050.00323.71
8.3.00.0080.00017.63
8.2.180.0040.01116.32
8.2.170.0110.00422.96
8.2.160.0070.00720.43
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0000.00721.02
8.2.110.0070.00319.33
8.2.100.0030.00917.84
8.2.90.0040.00419.30
8.2.80.0030.00617.97
8.2.70.0030.00517.63
8.2.60.0040.00417.75
8.2.50.0000.00818.16
8.2.40.0060.00618.05
8.2.30.0040.00418.13
8.2.20.0000.00817.63
8.2.10.0050.00318.14
8.2.00.0070.00017.84
8.1.280.0110.00325.92
8.1.270.0040.00422.20
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0070.01119.27
8.1.230.0070.00417.89
8.1.220.0000.00817.74
8.1.210.0030.00618.77
8.1.200.0000.00817.35
8.1.190.0070.00417.23
8.1.180.0040.00418.10
8.1.170.0000.00817.62
8.1.160.0000.00722.04
8.1.150.0030.00518.89
8.1.140.0000.00817.47
8.1.130.0000.00717.89
8.1.120.0040.00417.39
8.1.110.0050.00317.52
8.1.100.0070.00017.48
8.1.90.0070.00017.43
8.1.80.0040.00417.50
8.1.70.0000.00717.41
8.1.60.0040.00417.62
8.1.50.0050.00217.56
8.1.40.0030.00617.52
8.1.30.0060.00317.66
8.1.20.0080.00417.64
8.1.10.0000.00817.46
8.1.00.0040.00417.52
8.0.300.0050.00219.84
8.0.290.0000.00716.75
8.0.280.0030.00318.34
8.0.270.0000.00717.18
8.0.260.0040.00417.29
8.0.250.0000.00716.87
8.0.240.0040.00416.99
8.0.230.0050.00216.84
8.0.220.0040.00416.93
8.0.210.0030.00316.86
8.0.200.0000.00717.02
8.0.190.0000.00716.98
8.0.180.0030.00316.95
8.0.170.0000.00716.91
8.0.160.0030.00316.79
8.0.150.0000.00716.93
8.0.140.0070.00016.93
8.0.130.0060.00313.33
8.0.120.0000.00816.88
8.0.110.0040.00416.95
8.0.100.0000.00716.98
8.0.90.0050.00316.98
8.0.80.0090.00616.91
8.0.70.0000.00716.82
8.0.60.0080.00016.96
8.0.50.0000.00716.78
8.0.30.0130.00716.99
8.0.20.0080.01017.40
8.0.10.0030.00316.88
8.0.00.0120.01016.82
7.4.330.0040.00415.00
7.4.320.0000.00716.63
7.4.300.0030.00316.53
7.4.290.0030.00316.63
7.4.280.0050.00216.66
7.4.270.0030.00316.42
7.4.260.0040.00416.61
7.4.250.0070.00016.55
7.4.240.0040.00416.56
7.4.230.0000.00716.34
7.4.220.0060.01616.42
7.4.210.0120.00316.68
7.4.200.0050.00216.63
7.4.160.0060.00916.55
7.4.150.0150.01217.40
7.4.140.0150.00717.86
7.4.130.0060.01316.50
7.4.120.0100.00816.49
7.4.110.0080.01116.48
7.4.100.0130.00816.69
7.4.90.0120.00616.47
7.4.80.0090.01319.39
7.4.70.0120.00916.72
7.4.60.0030.01316.38
7.4.50.0000.00416.59
7.4.40.0130.00316.50
7.4.30.0080.00816.46
7.4.10.0070.00714.75
7.4.00.0000.00714.97
7.3.330.0030.00313.36
7.3.320.0050.00013.33
7.3.310.0030.00316.23
7.3.300.0030.00316.38
7.3.290.0130.00416.40
7.3.280.0120.00916.43
7.3.270.0080.01217.40
7.3.260.0140.01016.35
7.3.240.0120.00916.44
7.3.230.0070.01016.63
7.3.210.0030.01316.52
7.3.200.0080.01119.39
7.3.190.0110.01116.45
7.3.180.0170.00316.52
7.3.170.0100.00716.35
7.3.160.0120.00616.37
7.3.30.0070.01414.74
7.3.20.0860.00314.81
7.3.10.0900.00314.82
7.3.00.1090.01014.87
7.2.330.0170.00316.60
7.2.320.0070.01416.92
7.2.310.0140.00316.55
7.2.300.0110.00516.74
7.2.290.0080.00816.73
7.2.160.0070.00715.02
7.2.150.0770.00614.74
7.2.140.0850.00714.94
7.2.130.0800.00714.91
7.2.120.0830.00715.13
7.2.110.0490.00915.81
7.2.100.0860.00714.90
7.2.90.0760.00315.21
7.2.80.0840.00014.89
7.2.70.0790.00715.10
7.2.60.0390.00315.74
7.2.50.0940.00714.94
7.2.40.1060.00314.86
7.2.30.0690.01015.21
7.2.20.0780.00715.02
7.2.10.0860.01414.98
7.2.00.0420.00417.30
7.1.270.0830.00713.94
7.1.260.0890.00013.98
7.1.250.0750.01613.88
7.1.240.0790.00413.99
7.1.230.0990.01113.96
7.1.220.1020.01313.86
7.1.210.1040.00414.14
7.1.200.0470.00814.70
7.1.190.0870.01313.94
7.1.180.1100.01913.95
7.1.170.1180.00713.88
7.1.160.0710.01313.93
7.1.150.0830.01013.96
7.1.140.0780.01414.13
7.1.130.0790.01014.08
7.1.120.0750.00314.12
7.1.110.0780.00314.05
7.1.100.0430.01015.95
7.1.90.0760.01013.90
7.1.80.0680.01714.02
7.1.70.0420.00715.69
7.1.60.1510.00816.64
7.1.50.0360.00815.47
7.1.40.0470.00913.76
7.1.30.0620.01013.93
7.1.20.0490.01213.71
7.1.10.0600.01013.94
7.1.00.0390.04018.22
7.0.330.0970.00613.46
7.0.320.0830.00313.80
7.0.310.1720.00613.53
7.0.300.1130.00713.82
7.0.290.0920.00313.58
7.0.280.0800.01013.59
7.0.270.0820.01613.66
7.0.260.0830.01013.61
7.0.250.0800.00913.73
7.0.240.0690.01013.35
7.0.230.0790.00413.72
7.0.220.0640.01313.47
7.0.210.0520.00713.39
7.0.200.0300.01414.95
7.0.190.0610.01713.40
7.0.180.0660.00713.35
7.0.170.0650.00913.61
7.0.160.0510.01313.63
7.0.150.0880.00313.26
7.0.140.0280.04217.80
7.0.130.0420.01013.48
7.0.120.0550.00913.66
7.0.110.0490.01113.56
7.0.100.0460.01213.59
7.0.90.0630.00713.51
7.0.80.0570.01913.87
7.0.70.0550.00613.48
7.0.60.0340.03416.81
7.0.50.0310.02815.83
7.0.40.0280.04016.95
7.0.30.0520.02716.74
7.0.20.0380.04216.76
7.0.10.0340.04616.92
7.0.00.0270.04416.79
5.6.400.0150.01114.48
5.6.390.0170.00414.09
5.6.380.0110.01414.64
5.6.370.0190.00814.31
5.6.360.0090.01414.63
5.6.350.0150.00914.60
5.6.340.0240.01014.37
5.6.330.0160.01314.38
5.6.320.0120.00414.11
5.6.310.0170.01714.10
5.6.300.0160.01214.10
5.6.290.0130.01314.70
5.6.280.0110.04117.74
5.6.270.0180.01114.29
5.6.260.0150.01214.62
5.6.250.0180.00614.53
5.6.240.0230.00714.30
5.6.230.0250.00714.52
5.6.220.0100.01314.36
5.6.210.0170.04317.46
5.6.200.0100.02816.37
5.6.190.0120.03717.50
5.6.180.0140.04217.31
5.6.170.0170.02917.41
5.6.160.0070.03117.37
5.6.150.0120.02416.24
5.6.140.0170.03416.14
5.6.130.0090.04916.23
5.6.120.0080.04617.73
5.6.110.0080.04317.66
5.6.100.0140.03717.71
5.6.90.0170.04317.64
5.6.80.0170.03617.31
5.6.70.1870.02017.38
5.6.60.0210.00914.39
5.6.50.0170.00314.14
5.6.40.0230.01014.27
5.6.30.0090.01814.38
5.6.20.0070.01814.54
5.6.10.0180.00014.44
5.6.00.0150.00914.36
5.5.380.0120.01214.48
5.5.370.0220.01014.04
5.5.360.0100.00714.30
5.5.350.0100.03817.43
5.5.340.0170.03716.16
5.5.330.0120.02717.31
5.5.320.0180.04017.42
5.5.310.0230.04017.35
5.5.300.0080.03116.38
5.5.290.0130.04016.07
5.5.280.0160.02517.54
5.5.270.0100.04817.61
5.5.260.0050.02917.42
5.5.250.0100.05017.47
5.5.240.0170.04117.30
5.5.230.0170.00714.23
5.5.220.0230.00614.10
5.5.210.0110.00514.37
5.5.200.0170.01414.19
5.5.190.0180.01114.08
5.5.180.0150.01114.29
5.5.170.0060.01814.14
5.5.160.0110.01114.15
5.5.150.0150.01114.46
5.5.140.0070.02114.47
5.5.130.0130.00014.34
5.5.120.0080.00814.28
5.5.110.0150.00014.16
5.5.100.0120.00614.18
5.5.90.0040.01314.39
5.5.80.0100.01014.30
5.5.70.0150.00914.16
5.5.60.0170.00014.26
5.5.50.0100.00714.42
5.5.40.0160.00514.20
5.5.30.0150.00614.10
5.5.20.0160.01014.40
5.5.10.0120.00813.97
5.5.00.0210.01114.29
5.4.450.0060.02715.51
5.4.440.0110.02215.70
5.4.430.0100.03015.65
5.4.420.0050.02315.54
5.4.410.0110.02915.44
5.4.400.0110.02615.38
5.4.390.0080.02715.52
5.4.380.0090.02615.49
5.4.370.0080.03015.54
5.4.360.0110.01815.34
5.4.350.0120.03715.36
5.4.340.0040.02715.52
5.4.330.0160.00511.83
5.4.320.0080.03315.42
5.4.310.0090.04515.49
5.4.300.0130.04215.54
5.4.290.0110.04115.47
5.4.280.0070.04615.34
5.4.270.0030.03015.52
5.4.260.0160.03715.35
5.4.250.0060.02515.45
5.4.240.0110.02315.42
5.4.230.0110.02515.52
5.4.220.0080.04015.35
5.4.210.0090.03315.53
5.4.200.0070.03815.34
5.4.190.0050.02515.45
5.4.180.0040.02615.34
5.4.170.0070.03015.45
5.4.160.0110.03715.34
5.4.150.0120.03715.34
5.4.140.0060.04114.21
5.4.130.0080.03114.14
5.4.120.0090.02414.10
5.4.110.0110.04214.15
5.4.100.0100.03114.21
5.4.90.0070.03114.17
5.4.80.0020.02614.10
5.4.70.0070.02214.10
5.4.60.0070.02114.05
5.4.50.0090.03314.10
5.4.40.0060.03914.12
5.4.30.0080.01814.04
5.4.20.0080.02214.09
5.4.10.0110.02714.09
5.4.00.0070.02713.91

preferences:
50.64 ms | 401 KiB | 5 Q