3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Singleton { private static $instance = null; final private function __construct() {} final private function __clone() {} public function __wakeup() { throw new Exception("Cannot unserialize singleton"); } public static function getInstance() { if (!self::$instance) { self::$instance = new self; } return self::$instance; } } $oneInstance = Singleton::getInstance(); echo "Cloneable outside:", var_dump((new ReflectionClass('Singleton'))->isCloneable()); $cloner = function () { return clone $this; }; $secondInstance = $cloner->bindTo($oneInstance, 'Singleton')->__invoke(); // $thirdInstance = clone $oneInstance; var_dump($oneInstance, $secondInstance);

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)
8.3.60.0110.01118.52
8.3.50.0150.00721.33
8.3.40.0120.00318.67
8.3.30.0100.01020.20
8.3.20.0040.00420.30
8.3.10.0030.00522.00
8.3.00.0040.00422.43
8.2.180.0070.00716.63
8.2.170.0120.00322.96
8.2.160.0100.00320.43
8.2.150.0070.00324.18
8.2.140.0050.00324.66
8.2.130.0050.00226.16
8.2.120.0080.00019.36
8.2.110.0040.00422.18
8.2.100.0040.00719.28
8.2.90.0050.00319.25
8.2.80.0040.00419.39
8.2.70.0030.00517.50
8.2.60.0040.00418.03
8.2.50.0060.00318.07
8.2.40.0000.00918.22
8.2.30.0060.00318.03
8.2.20.0040.00417.66
8.2.10.0040.00417.61
8.2.00.0070.00317.82
8.1.280.0140.00625.92
8.1.270.0030.00524.66
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00323.91
8.1.230.0050.00519.00
8.1.220.0000.00817.74
8.1.210.0090.00018.77
8.1.200.0070.00317.34
8.1.190.0000.00817.53
8.1.180.0060.00319.01
8.1.170.0030.00618.45
8.1.160.0040.00422.08
8.1.150.0070.00018.65
8.1.140.0040.00417.45
8.1.130.0070.00017.85
8.1.120.0000.00817.55
8.1.110.0000.00817.45
8.1.100.0040.00417.37
8.1.90.0000.00717.50
8.1.80.0000.00717.33
8.1.70.0050.00217.46
8.1.60.0060.00317.50
8.1.50.0000.00717.57
8.1.40.0040.00417.51
8.1.30.0040.00417.69
8.1.20.0090.00017.67
8.1.10.0000.00717.64
8.1.00.0060.00317.56
8.0.300.0000.00718.77
8.0.290.0000.00817.18
8.0.280.0040.00418.41
8.0.270.0030.00317.27
8.0.260.0030.00316.80
8.0.250.0070.00016.90
8.0.240.0040.00416.94
8.0.230.0030.00316.91
8.0.220.0080.00016.90
8.0.210.0000.00716.99
8.0.200.0000.00617.01
8.0.190.0060.00316.87
8.0.180.0070.00017.00
8.0.170.0000.00816.89
8.0.160.0070.00016.94
8.0.150.0000.00716.84
8.0.140.0000.00716.79
8.0.130.0060.00013.44
8.0.120.0040.00416.93
8.0.110.0040.00416.98
8.0.100.0000.00716.93
8.0.90.0040.00417.01
8.0.80.0030.01416.94
8.0.70.0040.00416.97
8.0.60.0000.00716.79
8.0.50.0040.00417.03
8.0.30.0080.01017.01
8.0.20.0110.00817.40
8.0.10.0080.00017.16
8.0.00.0130.00916.82
7.4.330.0020.00215.00
7.4.320.0000.00616.52
7.4.300.0070.00016.50
7.4.290.0040.00216.65
7.4.280.0030.00316.65
7.4.270.0100.00016.25
7.4.260.0070.00416.40
7.4.250.0040.00416.62
7.4.240.0030.00416.63
7.4.230.0030.00316.43
7.4.220.0060.01216.57
7.4.210.0040.01116.55
7.4.200.0000.00716.55
7.4.190.0040.00416.65
7.4.160.0030.01316.70
7.4.150.0060.01217.40
7.4.140.0070.01217.86
7.4.130.0150.00216.55
7.4.120.0150.00416.51
7.4.110.0100.00716.43
7.4.100.0090.00816.39
7.4.90.0090.00916.43
7.4.80.0070.01119.39
7.4.70.0120.00916.54
7.4.60.0050.01116.52
7.4.50.0040.00416.37
7.4.40.0060.01022.77
7.4.30.0080.00816.69
7.4.00.0100.00314.82
7.3.330.0030.00313.23
7.3.320.0000.00613.29
7.3.310.0000.00716.16
7.3.300.0070.00016.29
7.3.290.0090.01016.37
7.3.280.0090.00816.26
7.3.270.0200.00617.40
7.3.260.0140.00316.56
7.3.250.0090.00816.37
7.3.240.0060.01716.30
7.3.230.0060.00916.39
7.3.210.0120.00616.20
7.3.200.0100.00619.39
7.3.190.0090.00916.36
7.3.180.0130.00316.43
7.3.170.0120.00316.39
7.3.160.0150.00316.22
7.3.120.0070.01014.94
7.3.10.0060.00616.53
7.3.00.0080.00016.45
7.2.330.0180.00016.53
7.2.320.0060.01216.46
7.2.310.0050.01116.83
7.2.300.0170.00016.52
7.2.290.0140.00316.43
7.2.130.0030.01016.99
7.2.120.0040.00717.00
7.2.110.0000.01016.96
7.2.100.0110.00017.08
7.2.90.0000.01516.91
7.2.80.0030.00917.02
7.2.70.0040.01116.71
7.2.60.0060.00817.07
7.2.50.0120.00316.54
7.2.40.0040.00816.84
7.2.30.0060.00617.03
7.2.20.0030.01016.95
7.2.10.0030.01016.91
7.2.00.0040.00918.02
7.1.250.0060.00615.62
7.1.200.0080.00415.56
7.1.100.0060.00317.81
7.1.70.0090.00616.86
7.1.60.0070.01319.21
7.1.50.0110.01416.83
7.1.00.0030.03722.48
7.0.200.0140.01014.98
7.0.140.0070.07022.01
7.0.60.0030.07720.04
7.0.50.0030.04317.88
7.0.40.0100.06720.11
7.0.30.0200.04020.09
7.0.20.0230.08020.19
7.0.10.0070.08720.30
7.0.00.0070.07020.34
5.6.280.0000.07320.93
5.6.210.0130.05320.70
5.6.200.0130.07718.18
5.6.190.0100.04320.33
5.6.180.0400.07020.64
5.6.170.0270.04720.54
5.6.160.0070.08320.54
5.6.150.0170.07318.22
5.6.140.0000.05318.17
5.6.130.0130.07318.19
5.6.120.0100.07021.15
5.6.110.0230.06021.04
5.6.100.0100.03721.11
5.6.90.0070.04721.13
5.6.80.0100.07720.39
5.6.70.4670.03720.38
5.5.350.0130.07320.31
5.5.340.0070.07017.96
5.5.330.0070.05320.28
5.5.320.0070.08320.28
5.5.310.0130.05020.34
5.5.300.0100.07717.96
5.5.290.0000.05018.02
5.5.280.0030.08720.89
5.5.270.0070.07720.75
5.5.260.0030.08320.77
5.5.250.0070.05020.56
5.5.240.0230.06320.27
5.4.450.1070.05019.31
5.4.440.0800.06319.34
5.4.430.0570.05019.39
5.4.420.0100.05319.16
5.4.410.0070.05719.07
5.4.400.0400.05318.77
5.4.390.0230.06018.77
5.4.380.0300.04318.67
5.4.370.0070.06018.78
5.4.360.0100.05718.84
5.4.350.0070.03712.02
5.4.340.0130.04412.02
5.4.320.0050.04412.50
5.4.310.0050.03912.51
5.4.300.0040.04112.51
5.4.290.0070.05212.50
5.4.280.0070.03512.40
5.4.270.0040.04312.40
5.4.260.0060.04312.40
5.4.250.0130.04718.95
5.4.240.0200.06019.00
5.4.230.0170.06718.94
5.4.220.0100.05018.93
5.4.210.0130.04318.84
5.4.200.0170.04018.93
5.4.190.0070.05018.74
5.4.180.0170.04318.98
5.4.170.0130.04719.11
5.4.160.0130.04318.95
5.4.150.0030.05718.93
5.4.140.0100.05016.44
5.4.130.0130.04716.57
5.4.120.0130.04316.53
5.4.110.0000.06016.47
5.4.100.0070.04716.50
5.4.90.0130.04016.41
5.4.80.0070.04716.48
5.4.70.0100.05016.60
5.4.60.0070.04716.39
5.4.50.0130.04016.59
5.4.40.0100.05016.44
5.4.30.0070.06716.53
5.4.20.0030.05716.36
5.4.10.0030.05316.38
5.4.00.0100.04315.88
5.3.290.0080.04712.80
5.3.280.0000.05714.59
5.3.270.0170.04014.61
5.3.260.0100.04714.69
5.3.250.0070.05314.75
5.3.240.0070.05714.59
5.3.230.0000.05714.82
5.3.220.0000.05314.59
5.3.210.0100.04714.59
5.3.200.0130.05014.71
5.3.190.0030.05314.40
5.3.180.0030.05714.55
5.3.170.0070.05014.63
5.3.160.0170.07014.66
5.3.150.0070.05314.59
5.3.140.0130.06714.54
5.3.130.0170.04714.64
5.3.120.0030.06014.71
5.3.110.0130.05714.72
5.3.100.0000.05714.22
5.3.90.0230.03314.01
5.3.80.0130.06014.06
5.3.70.0130.05014.09
5.3.60.0070.06014.01
5.3.50.0100.06713.80
5.3.40.0130.04713.86
5.3.30.0070.05013.75
5.3.20.0130.06313.79
5.3.10.0030.05013.66
5.3.00.0000.05713.55
5.2.170.0100.03711.32
5.2.160.0030.04311.05
5.2.150.0130.04711.11
5.2.140.0100.03711.23
5.2.130.0070.04711.08
5.2.120.0070.03711.18
5.2.110.0100.04011.17
5.2.100.0070.03711.18
5.2.90.0070.03711.20
5.2.80.0070.04311.26
5.2.70.0070.03711.07
5.2.60.0030.04011.06
5.2.50.0030.04311.11
5.2.40.0000.04311.01
5.2.30.0070.03710.95
5.2.20.0030.04011.05
5.2.10.0100.03310.96
5.2.00.0030.04010.63
5.1.60.0000.0379.98
5.1.50.0130.02310.10
5.1.40.0070.04310.04
5.1.30.0070.03310.54
5.1.20.0130.04710.58
5.1.10.0030.03710.16
5.1.00.0030.03710.05
5.0.50.0030.0278.51
5.0.40.0070.0278.62
5.0.30.0070.0408.21
5.0.20.0030.0238.35
5.0.10.0100.0238.22
5.0.00.0030.0438.16
4.4.90.0000.0237.34
4.4.80.0030.0207.34
4.4.70.0000.0277.34
4.4.60.0030.0207.34
4.4.50.0030.0277.34
4.4.40.0030.0407.34
4.4.30.0000.0237.34
4.4.20.0030.0207.34
4.4.10.0000.0307.34
4.4.00.0000.0337.34
4.3.110.0030.0207.34
4.3.100.0000.0207.34
4.3.90.0000.0207.34
4.3.80.0070.0307.34
4.3.70.0000.0207.34
4.3.60.0030.0207.34
4.3.50.0030.0237.34
4.3.40.0000.0437.34
4.3.30.0000.0277.34
4.3.20.0070.0207.34
4.3.10.0030.0177.34
4.3.00.0100.0276.27

preferences:
41.67 ms | 401 KiB | 5 Q