3v4l.org

run code in 300+ PHP versions simultaneously
<?php function ref(&$ref) { var_dump($ref); } class a { function __construct() { $args = array(&$this); for ($i = 0; $i < 2; $i++) { $a = array_slice($args, 0, 1); call_user_func_array('ref', $a); } } }; new a();

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)
8.3.60.0070.01418.56
8.3.50.0070.01119.82
8.3.40.0110.00618.85
8.3.30.0040.01118.80
8.3.20.0040.00421.94
8.3.10.0040.00423.61
8.3.00.0040.00419.66
8.2.180.0040.01118.55
8.2.170.0070.00722.96
8.2.160.0090.00422.21
8.2.150.0040.00424.18
8.2.140.0070.00024.66
8.2.130.0050.00326.16
8.2.120.0110.00721.00
8.2.110.0030.00620.32
8.2.100.0090.00318.03
8.2.90.0030.00520.07
8.2.80.0030.00518.04
8.2.70.0040.00417.93
8.2.60.0040.00418.03
8.2.50.0030.00518.10
8.2.40.0000.00919.29
8.2.30.0040.00419.32
8.2.20.0070.00017.75
8.2.10.0000.00718.13
8.2.00.0000.00718.00
8.1.280.0120.00325.92
8.1.270.0050.00323.95
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00323.70
8.1.230.0040.00723.91
8.1.220.0040.00417.76
8.1.210.0050.00318.77
8.1.200.0000.00917.47
8.1.190.0060.00317.35
8.1.180.0030.00518.10
8.1.170.0040.00418.59
8.1.160.0000.00722.17
8.1.150.0040.00418.88
8.1.140.0040.00419.50
8.1.130.0000.00817.68
8.1.120.0080.00017.38
8.1.110.0030.00717.45
8.1.100.0030.00517.40
8.1.90.0040.00417.35
8.1.80.0000.00717.36
8.1.70.0070.00017.51
8.1.60.0000.00917.60
8.1.50.0040.00417.52
8.1.40.0040.00417.55
8.1.30.0030.00517.64
8.1.20.0000.00817.57
8.1.10.0000.00717.52
8.1.00.0040.00817.41
8.0.300.0070.00019.57
8.0.290.0000.00716.75
8.0.280.0070.00018.45
8.0.270.0000.00817.27
8.0.260.0030.00317.21
8.0.250.0030.00317.07
8.0.240.0070.00016.94
8.0.230.0030.00317.05
8.0.220.0000.00716.86
8.0.210.0050.00316.96
8.0.200.0000.00617.00
8.0.190.0040.00416.98
8.0.180.0080.00016.96
8.0.170.0000.00816.97
8.0.160.0070.00017.04
8.0.150.0040.00416.89
8.0.140.0040.00416.98
8.0.130.0000.00513.39
8.0.120.0040.00416.90
8.0.110.0070.00016.85
8.0.100.0040.00416.90
8.0.90.0040.00416.94
8.0.80.0100.00616.94
8.0.70.0070.00016.97
8.0.60.0040.00417.03
8.0.50.0000.00716.85
8.0.30.0120.00717.13
8.0.20.0110.00817.40
8.0.10.0000.00716.91
8.0.00.0150.00316.91
7.4.330.0050.00015.08
7.4.320.0030.00316.43
7.4.300.0070.00016.52
7.4.290.0030.00316.52
7.4.280.0090.00016.43
7.4.270.0030.00316.42
7.4.260.0000.00716.59
7.4.250.0030.00316.55
7.4.240.0050.00216.57
7.4.230.0030.00316.33
7.4.220.0030.00316.30
7.4.210.0110.00916.66
7.4.200.0040.00416.61
7.4.160.0080.00816.42
7.4.150.0060.01217.40
7.4.140.0120.00917.86
7.4.130.0100.00616.52
7.4.120.0060.01116.41
7.4.110.0090.00916.42
7.4.100.0080.00816.50
7.4.90.0120.00616.38
7.4.80.0000.01819.39
7.4.70.0040.01416.53
7.4.60.0110.00716.58
7.4.50.0030.01016.64
7.4.40.0160.00016.52
7.4.30.0160.00616.46
7.4.00.0050.00314.76
7.3.330.0030.00613.37
7.3.320.0030.00313.33
7.3.310.0040.00416.17
7.3.300.0030.00316.20
7.3.290.0120.00516.36
7.3.280.0080.00916.36
7.3.270.0030.01517.40
7.3.260.0120.00616.50
7.3.250.0080.01416.47
7.3.240.0120.00516.49
7.3.230.0000.02416.54
7.3.210.0100.00616.54
7.3.200.0070.01116.34
7.3.190.0040.01216.42
7.3.180.0070.01416.37
7.3.170.0110.00716.29
7.3.160.0130.00316.46
7.2.330.0090.00916.60
7.2.320.0030.01316.51
7.2.310.0120.00616.52
7.2.300.0090.00916.46
7.2.290.0090.00916.54
7.2.60.0100.00316.80
7.2.00.0040.00719.46
7.1.200.0100.00315.87
7.1.100.0040.00817.95
7.1.70.0040.00417.34
7.1.60.0060.00619.75
7.1.50.0060.01216.77
7.1.00.0070.07322.36
7.0.200.0090.00614.91
7.0.90.0270.07719.96
7.0.80.0200.05719.91
7.0.70.0270.06020.18
7.0.60.0270.05319.92
7.0.50.0130.07320.37
7.0.40.0230.06020.36
7.0.30.0130.06320.43
7.0.20.0230.06020.36
7.0.10.0270.05320.30
7.0.00.0230.07320.30
5.6.240.0130.06520.65
5.6.230.0170.05720.66
5.6.220.0230.05720.67
5.6.210.0170.05020.53
5.6.200.0130.07021.10
5.6.190.0100.06021.17
5.6.180.0130.08321.19
5.6.170.0070.06021.00
5.6.160.0200.05321.09
5.6.150.0100.06021.12
5.6.140.0070.06021.10
5.6.130.0200.05321.12
5.6.120.0170.06021.08
5.6.110.0030.06321.00
5.6.100.0230.04721.09
5.6.90.0100.06020.99
5.6.80.0030.06020.47
5.6.70.0100.06020.54
5.6.60.0030.06020.45
5.6.50.0100.06020.47
5.6.40.0030.06020.53
5.6.30.0130.05020.53
5.6.20.0030.06320.53
5.6.10.0030.06320.37
5.6.00.0200.05320.46
5.5.380.0230.07020.46
5.5.370.0200.07320.45
5.5.360.0100.06320.40
5.5.350.0130.06020.57
5.5.340.0230.05320.95
5.5.330.0170.05020.86
5.5.320.0100.05720.96
5.5.310.0270.04320.93
5.5.300.0100.06320.84
5.5.290.0000.07020.89
5.5.280.0170.06020.83
5.5.270.0130.05720.92
5.5.260.0170.05320.92
5.5.250.0030.07020.76
5.5.240.0130.06320.33
5.5.230.0170.04720.25
5.5.220.0200.04720.31
5.5.210.0200.05320.08
5.5.200.0170.04720.12
5.5.190.0100.05320.18
5.5.180.0100.05720.30
5.5.160.0100.06020.30
5.5.150.0170.05020.32
5.5.140.0070.06020.26
5.5.130.0100.05320.23
5.5.120.0100.05320.27
5.5.110.0100.05720.26
5.5.100.0070.06020.17
5.5.90.0100.05320.07
5.5.80.0070.06020.23
5.5.70.0170.05020.20
5.5.60.0200.05020.11
5.5.50.0100.05320.08
5.5.40.0130.05020.16
5.5.30.0200.05020.05
5.5.20.0170.05320.11
5.5.10.0030.06320.10
5.5.00.0070.06020.03
5.4.450.0100.05719.50
5.4.440.0030.06019.41
5.4.430.0030.06019.55
5.4.420.0170.04719.52
5.4.410.0130.07719.10
5.4.400.0070.05718.92
5.4.390.0170.04719.09
5.4.380.0170.04719.18
5.4.370.0100.05019.23
5.4.360.0200.04319.20
5.4.350.0200.05019.15
5.4.340.0100.05318.93
5.4.320.0170.06019.18
5.4.310.0070.05719.20
5.4.300.0170.04719.15
5.4.290.0170.06019.03
5.4.280.0100.06319.18
5.4.270.0100.06019.17
5.4.260.0030.06019.23
5.4.250.0200.05019.17
5.4.240.0100.05319.07
5.4.230.0230.03718.89
5.4.220.0130.07718.89
5.4.210.0100.06019.02
5.4.200.0170.04719.07
5.4.190.0130.05019.03
5.4.180.0070.05319.16
5.4.170.0100.07319.23
5.4.160.0100.05019.07
5.4.150.0170.05319.07
5.4.140.0100.05016.44
5.4.130.0070.04716.55
5.4.120.0100.04716.50
5.4.110.0130.04316.63
5.4.100.0030.05716.60
5.4.90.0100.04716.62
5.4.80.0130.07016.35
5.4.70.0130.06316.31
5.4.60.0130.04316.55
5.4.50.0130.05716.54
5.4.40.0030.05316.63
5.4.30.0070.05016.38
5.4.20.0100.04716.58
5.4.10.0100.05016.57
5.4.00.0030.05315.77
5.3.290.0100.06014.81
5.3.280.0000.06014.71
5.3.270.0070.05714.71
5.3.260.0070.06014.48
5.3.250.0030.06014.64
5.3.240.0070.05714.61
5.3.230.0100.05014.46
5.3.220.0130.04314.56
5.3.210.0030.06314.60
5.3.200.0100.05014.59
5.3.190.0100.05014.56
5.3.180.0130.04714.59
5.3.170.0130.04314.70
5.3.160.0000.05714.57
5.3.150.0030.05714.55
5.3.140.0130.04714.39
5.3.130.0030.05714.57
5.3.120.0100.05314.54
5.3.110.0030.05714.59
5.3.100.0100.04714.04
5.3.90.0170.05313.99
5.3.80.0070.05314.02
5.3.70.0170.04314.02
5.3.60.0170.04314.02
5.3.50.0170.06013.86
5.3.40.0130.06313.86
5.3.30.0000.05713.90
5.3.20.0170.04313.70
5.3.10.0130.04313.78
5.3.00.0030.05713.64
5.2.170.0100.05711.17
5.2.160.0030.04311.15
5.2.150.0030.04711.14
5.2.140.0070.04311.08
5.2.130.0130.04011.13
5.2.120.0030.04011.05
5.2.110.0100.04010.97
5.2.100.0000.04711.10
5.2.90.0070.04311.10
5.2.80.0100.04011.11
5.2.70.0030.05011.07
5.2.60.0000.04710.89
5.2.50.0030.04711.05
5.2.40.0070.04011.03
5.2.30.0100.04010.99
5.2.20.0030.04710.96
5.2.10.0070.03710.77
5.2.00.0030.04310.76
5.1.60.0170.0409.89
5.1.50.0170.0379.95
5.1.40.0130.0409.96
5.1.30.0000.04310.35
5.1.20.0070.03710.35
5.1.10.0130.03710.14
5.1.00.0000.04310.05
5.0.50.0100.0208.59
5.0.40.0030.0278.42
5.0.30.0130.0308.15
5.0.20.0030.0378.24
5.0.10.0030.0278.16
5.0.00.0100.0338.23
4.4.90.0030.0205.81
4.4.80.0130.0235.80
4.4.70.0000.0275.84
4.4.60.0030.0235.92
4.4.50.0030.0235.84
4.4.40.0070.0405.93
4.4.30.0070.0275.85
4.4.20.0030.0335.91
4.4.10.0030.0235.93
4.4.00.0000.0375.88
4.3.110.0000.0275.82
4.3.100.0030.0305.76
4.3.90.0030.0305.74
4.3.80.0030.0335.83
4.3.70.0000.0235.81
4.3.60.0070.0175.73
4.3.50.0070.0175.75
4.3.40.0000.0335.71
4.3.30.0030.0205.52
4.3.20.0000.0235.52
4.3.10.0000.0235.52
4.3.00.0000.0275.52

preferences:
60.4 ms | 401 KiB | 5 Q