3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { private $_b; private static $_instance; public function __construct($b) { $this->_b = $b; } public function __toString() { return $this->_b . PHP_EOL; } public static function getInstance($b = NULL) { if( ! isset(self::$_instance)){ self::$_instance = new self($b); } return self::$_instance; } } $a = A::getInstance("Test 1"); $b = A::getInstance("Test 2"); echo $a; echo $b;

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)
8.3.60.0120.00916.75
8.3.50.0140.00922.00
8.3.40.0060.00918.67
8.3.30.0120.00619.21
8.3.20.0040.00419.98
8.3.10.0090.00023.48
8.3.00.0080.00317.80
8.2.180.0090.00916.63
8.2.170.0120.00322.96
8.2.160.0060.01219.23
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0080.00020.67
8.2.110.0000.00822.29
8.2.100.0120.00019.57
8.2.90.0050.00319.17
8.2.80.0030.00517.97
8.2.70.0090.00017.63
8.2.60.0040.00417.93
8.2.50.0080.00018.07
8.2.40.0080.00018.22
8.2.30.0040.00418.04
8.2.20.0000.00817.61
8.2.10.0040.00417.98
8.2.00.0040.00417.74
8.1.280.0130.00625.92
8.1.270.0120.00322.14
8.1.260.0040.00426.35
8.1.250.0060.00328.09
8.1.240.0090.00023.71
8.1.230.0110.00018.89
8.1.220.0000.01017.74
8.1.210.0040.00418.77
8.1.200.0090.00017.22
8.1.190.0000.00817.66
8.1.180.0000.00818.10
8.1.170.0030.00618.59
8.1.160.0070.00022.03
8.1.150.0040.00418.88
8.1.140.0070.00017.40
8.1.130.0030.00317.69
8.1.120.0000.00717.36
8.1.110.0040.00417.49
8.1.100.0000.00717.30
8.1.90.0050.00317.46
8.1.80.0040.00417.42
8.1.70.0030.00317.25
8.1.60.0000.00917.59
8.1.50.0040.00417.56
8.1.40.0040.00417.51
8.1.30.0050.00317.70
8.1.20.0030.00617.66
8.1.10.0040.00417.55
8.1.00.0040.00717.51
8.0.300.0030.00318.77
8.0.290.0050.00217.05
8.0.280.0030.00318.34
8.0.270.0000.00717.26
8.0.260.0000.00617.16
8.0.250.0000.00716.91
8.0.240.0030.00616.84
8.0.230.0030.00316.86
8.0.220.0000.00716.91
8.0.210.0000.00716.86
8.0.200.0050.00316.94
8.0.190.0070.00016.95
8.0.180.0080.00416.97
8.0.170.0040.00416.86
8.0.160.0070.00016.85
8.0.150.0000.00716.84
8.0.140.0030.00316.75
8.0.130.0000.00713.30
8.0.120.0040.00416.87
8.0.110.0050.00316.75
8.0.100.0040.00416.71
8.0.90.0050.00316.86
8.0.80.0110.01116.98
8.0.70.0040.00416.75
8.0.60.0050.00216.77
8.0.50.0000.00716.89
8.0.30.0130.00817.09
8.0.20.0070.01117.40
8.0.10.0030.00316.96
8.0.00.0120.00516.70
7.4.330.0000.00615.20
7.4.320.0000.00616.50
7.4.300.0030.00316.58
7.4.290.0080.00016.64
7.4.280.0040.00416.51
7.4.270.0050.00316.61
7.4.260.0040.00416.59
7.4.250.0040.00416.45
7.4.240.0030.00516.53
7.4.230.0030.00316.41
7.4.220.0030.01716.61
7.4.210.0090.00916.50
7.4.200.0030.00316.70
7.4.160.0060.00916.59
7.4.150.0170.00417.40
7.4.140.0080.00817.86
7.4.130.0110.00516.57
7.4.120.0100.00716.55
7.4.110.0090.00816.62
7.4.100.0200.00716.47
7.4.90.0120.00916.57
7.4.80.0140.00919.39
7.4.70.0120.00416.64
7.4.60.0100.00716.41
7.4.50.0040.00416.50
7.4.40.0100.01016.58
7.4.30.0140.00616.55
7.4.00.0030.01414.94
7.3.330.0000.00513.29
7.3.320.0030.00313.28
7.3.310.0000.00616.16
7.3.300.0070.00016.29
7.3.290.0060.01016.29
7.3.280.0120.00716.29
7.3.270.0080.01217.40
7.3.260.0040.01516.40
7.3.250.0160.00516.60
7.3.240.0100.00716.71
7.3.230.0120.00616.43
7.3.210.0110.01116.37
7.3.200.0000.01619.39
7.3.190.0160.00616.35
7.3.180.0110.00516.53
7.3.170.0000.01516.27
7.3.160.0120.00416.45
7.3.10.0200.00516.75
7.3.00.0060.00616.10
7.2.330.0100.00716.75
7.2.320.0040.01216.47
7.2.310.0170.00016.69
7.2.300.0040.01316.74
7.2.290.0090.00916.52
7.2.130.0130.01316.15
7.2.120.0230.00416.92
7.2.110.0150.00617.04
7.2.100.0090.01116.40
7.2.90.0100.01016.58
7.2.80.0130.01316.91
7.2.70.0100.00616.45
7.2.60.0040.01316.69
7.2.50.0090.00616.20
7.2.40.0120.01216.62
7.2.30.0050.00817.00
7.2.20.0110.00816.41
7.2.10.0080.01416.77
7.2.00.0040.00917.99
7.1.250.0110.01115.48
7.1.200.0020.00715.79
7.1.100.0030.01318.11
7.1.70.0030.00617.12
7.1.60.0030.00717.28
7.1.50.0130.00716.70
7.1.00.0000.08022.54
7.0.200.0090.00916.52
7.0.140.0000.07722.05
7.0.110.0130.06319.95
7.0.100.0170.08019.98
7.0.90.0030.04020.05
7.0.80.0030.04719.95
7.0.70.0070.03719.94
7.0.60.0130.03019.93
7.0.50.0230.03320.10
7.0.40.0070.03019.75
7.0.30.0100.02719.67
7.0.20.0070.03019.73
7.0.10.0070.03019.74
7.0.00.0000.03719.64
5.6.280.0070.07021.03
5.6.260.0070.07320.61
5.6.250.0070.03720.66
5.6.240.0030.04320.70
5.6.230.0070.04020.48
5.6.220.0070.03020.55
5.6.210.0100.02720.68
5.6.200.0030.03720.66
5.6.190.0070.03020.85
5.6.180.0100.02720.55
5.6.170.0100.02720.56
5.6.160.0070.03020.62
5.6.150.0030.03320.57
5.6.140.0030.03720.55
5.6.130.0100.03020.68
5.6.120.0030.03720.58
5.6.110.0030.04720.57
5.6.100.0000.04720.62
5.6.90.0030.03320.59
5.6.80.0000.04020.08
5.6.70.0030.03720.07
5.6.60.0070.04020.00
5.6.50.0070.04319.93
5.6.40.0030.03019.91
5.6.30.0030.03319.97
5.6.20.0030.04020.21
5.6.10.0030.05719.91
5.6.00.0000.04719.91
5.5.380.0030.04017.60
5.5.370.0100.03017.70
5.5.360.0070.03017.69
5.5.350.0030.03717.64
5.5.340.0070.03017.93
5.5.330.0070.03018.10
5.5.320.0070.03017.93
5.5.310.0030.03318.09
5.5.300.0030.03718.22
5.5.290.0030.03717.95
5.5.280.0030.04018.22
5.5.270.0030.06018.24
5.5.260.0070.05018.22
5.5.250.0030.04017.91
5.5.240.0030.04717.29
5.5.230.0030.04017.50
5.5.220.0030.03717.33
5.5.210.0030.03317.29
5.5.200.0070.03317.28
5.5.190.0070.04017.58
5.5.180.0130.06017.47
5.5.160.0030.04017.18
5.5.150.0030.06717.57
5.5.140.0100.07017.27
5.5.130.0070.06717.45
5.5.120.0070.04717.14
5.5.110.0000.05317.46
5.5.100.0000.04017.18
5.5.90.0100.04317.07
5.5.80.0000.03717.31
5.5.70.0000.04017.49
5.5.60.0070.06017.16
5.5.50.0000.05017.07
5.5.40.0070.05317.36
5.5.30.0000.07317.33
5.5.20.0030.06317.15
5.5.10.0070.03717.07
5.5.00.0130.06317.36
5.4.450.0070.04719.50
5.4.440.0030.03719.27
5.4.430.0100.02719.33
5.4.420.0070.03019.27
5.4.410.0000.03319.36
5.4.400.0000.04319.18
5.4.390.0030.03719.00
5.4.380.0000.04019.25
5.4.370.0070.07319.02
5.4.360.0000.03319.30
5.4.350.0030.04319.14
5.4.340.0030.07318.94
5.4.320.0030.03719.03
5.4.310.0030.03719.24
5.4.300.0000.06319.21
5.4.290.0000.04319.00
5.4.280.0030.04319.14
5.4.270.0130.05319.30
5.4.260.0030.08019.00
5.4.250.0000.04018.94
5.4.240.0070.03319.14
5.4.230.0030.04019.08
5.4.220.0030.05019.16
5.4.210.0100.03319.23
5.4.200.0030.07718.97
5.4.190.0030.03318.96
5.4.180.0000.06318.97
5.4.170.0000.04019.16
5.4.160.0130.04319.19
5.4.150.0070.06719.30
5.4.140.0100.07716.52
5.4.130.0070.04716.47
5.4.120.0070.03316.35
5.4.110.0070.03316.42
5.4.100.0000.04716.50
5.4.90.0030.03716.50
5.4.80.0070.03316.43
5.4.70.0030.04016.55
5.4.60.0200.03016.42
5.4.50.0170.07716.47
5.4.40.0100.05716.48
5.4.30.0100.03716.32
5.4.20.0070.06316.42
5.4.10.0070.05716.62
5.4.00.0000.04015.79
5.3.290.0170.07314.70
5.3.280.0070.07314.48
5.3.270.0070.03314.47
5.3.260.0000.08014.75
5.3.250.0070.06714.62
5.3.240.0100.06714.61
5.3.230.0070.08014.61
5.3.220.0000.04014.53
5.3.210.0030.04014.58
5.3.200.0030.03314.67
5.3.190.0030.07314.70
5.3.180.0000.04714.66
5.3.170.0030.04714.71
5.3.160.0030.06014.43
5.3.150.0030.04314.80
5.3.140.0100.07314.59
5.3.130.0070.08014.58
5.3.120.0000.05714.68
5.3.110.0030.06314.68
5.3.100.0070.06714.07
5.3.90.0030.04314.01
5.3.80.0070.04014.05
5.3.70.0030.04013.98
5.3.60.0070.06014.23
5.3.50.0030.03714.18
5.3.40.0070.04313.98
5.3.30.0070.06713.99
5.3.20.0200.02713.92
5.3.10.0070.02713.73
5.3.00.0070.03013.70
5.2.170.0100.03011.91
5.2.160.0000.05311.91
5.2.150.0030.03311.91
5.2.140.0070.05711.91
5.2.130.0070.02311.91
5.2.120.0070.05311.91
5.2.110.0030.04711.91
5.2.100.0100.02011.91
5.2.90.0000.03711.91
5.2.80.0070.02711.91
5.2.70.0000.03711.91
5.2.60.0000.03011.91
5.2.50.0000.04711.91
5.2.40.0030.05311.91
5.2.30.0030.06011.91
5.2.20.0000.04711.91
5.2.10.0030.04311.91
5.2.00.0070.05711.91
5.1.60.0070.02311.91
5.1.50.0030.05011.91
5.1.40.0000.03711.91
5.1.30.0070.04711.91
5.1.20.0030.02311.91
5.1.10.0070.05011.91
5.1.00.0030.02711.91
5.0.50.0030.03711.91
5.0.40.0000.03311.91
5.0.30.0000.04711.91
5.0.20.0000.03011.91
5.0.10.0030.02711.91
5.0.00.0030.04011.91
4.4.90.0030.01311.91
4.4.80.0030.02711.91
4.4.70.0000.03311.91
4.4.60.0030.02711.91
4.4.50.0000.03711.91
4.4.40.0030.05011.91
4.4.30.0030.03711.91
4.4.20.0000.02311.91
4.4.10.0030.03311.91
4.4.00.0000.05311.91
4.3.110.0000.02011.91
4.3.100.0070.02011.91
4.3.90.0030.02311.91
4.3.80.0000.03311.91
4.3.70.0070.02311.91
4.3.60.0030.03311.91
4.3.50.0030.03011.91
4.3.40.0030.02311.91
4.3.30.0000.04311.91
4.3.20.0030.02311.91
4.3.10.0030.02011.91
4.3.00.0000.01711.91

preferences:
89.87 ms | 401 KiB | 5 Q