3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [1, 2, 3]; foreach ($arr as &$a); foreach ($arr as &$a); print_r($arr);

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)
8.3.60.0030.01018.31
8.3.50.0060.00922.05
8.3.40.0140.00718.59
8.3.30.0080.00818.82
8.3.20.0070.00020.04
8.3.10.0040.00422.04
8.3.00.0040.00422.28
8.2.180.0070.01116.32
8.2.170.0070.00722.96
8.2.160.0170.00019.20
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0040.00419.48
8.2.110.0090.00022.29
8.2.100.0060.00619.34
8.2.90.0050.00319.13
8.2.80.0040.00418.01
8.2.70.0060.00317.50
8.2.60.0080.00017.93
8.2.50.0060.00318.07
8.2.40.0050.00318.22
8.2.30.0040.00418.11
8.2.20.0020.00517.57
8.2.10.0090.00017.73
8.2.00.0040.00417.79
8.1.280.0100.00325.92
8.1.270.0060.00322.20
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0050.00523.83
8.1.230.0080.00318.97
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0090.00017.38
8.1.190.0050.00317.52
8.1.180.0040.00418.93
8.1.170.0000.00818.43
8.1.160.0070.00022.03
8.1.150.0070.00018.56
8.1.140.0060.00317.49
8.1.130.0000.00617.82
8.1.120.0030.00317.45
8.1.110.0040.00417.27
8.1.100.0000.00717.46
8.1.90.0040.00417.46
8.1.80.0040.00417.42
8.1.70.0000.00717.42
8.1.60.0030.00717.62
8.1.50.0040.00417.50
8.1.40.0000.00717.54
8.1.30.0000.00917.61
8.1.20.0060.00317.61
8.1.10.0050.00317.43
8.1.00.0000.00717.38
8.0.300.0030.00318.77
8.0.290.0030.00617.30
8.0.280.0000.00718.42
8.0.270.0050.00217.29
8.0.260.0030.00316.81
8.0.250.0030.00316.93
8.0.240.0030.00316.84
8.0.230.0030.00316.90
8.0.220.0070.00016.92
8.0.210.0030.00316.90
8.0.200.0030.00316.82
8.0.190.0000.00716.98
8.0.180.0070.00016.89
8.0.170.0030.00616.91
8.0.160.0070.00016.81
8.0.150.0040.00416.87
8.0.140.0000.00716.75
8.0.130.0000.00513.33
8.0.120.0040.00416.73
8.0.110.0050.00216.79
8.0.100.0050.00316.94
8.0.90.0000.00816.72
8.0.80.0080.00816.76
8.0.70.0000.00716.94
8.0.60.0080.00016.81
8.0.50.0040.00416.75
8.0.30.0120.01017.11
8.0.20.0080.01017.40
8.0.10.0000.00816.87
8.0.00.0140.00316.72
7.4.330.0000.00615.00
7.4.320.0060.00016.64
7.4.300.0060.00016.48
7.4.290.0030.00316.48
7.4.280.0030.00316.50
7.4.270.0040.00416.60
7.4.260.0050.00316.48
7.4.250.0050.00216.43
7.4.240.0040.00316.51
7.4.230.0000.00816.40
7.4.220.0140.00616.48
7.4.210.0070.00716.51
7.4.200.0000.00716.70
7.4.190.0000.00716.69
7.4.160.0090.00616.46
7.4.150.0100.01417.40
7.4.140.0100.00717.86
7.4.130.0100.00916.40
7.4.120.0100.00916.49
7.4.110.0100.00616.35
7.4.100.0090.00916.39
7.4.90.0110.00716.48
7.4.80.0130.00319.39
7.4.70.0030.01316.33
7.4.60.0100.00716.49
7.4.50.0040.00416.39
7.4.40.0060.00922.77
7.4.30.0120.00616.40
7.4.00.0070.01014.87
7.3.330.0020.00213.20
7.3.320.0000.00513.19
7.3.310.0040.00416.25
7.3.300.0030.00316.13
7.3.290.0030.01016.25
7.3.280.0100.00716.27
7.3.270.0100.00717.40
7.3.260.0160.00616.49
7.3.250.0090.00916.64
7.3.240.0160.00416.50
7.3.230.0100.00616.39
7.3.210.0140.00316.28
7.3.200.0030.01219.39
7.3.190.0200.03016.32
7.3.180.0040.01116.27
7.3.170.0140.00616.27
7.3.160.0080.00816.33
7.3.120.0070.01014.95
7.2.330.0060.01316.44
7.2.320.0070.01016.56
7.2.310.0150.00616.63
7.2.300.0080.00816.61
7.2.290.0210.00016.67
7.2.60.0090.00316.61
7.1.200.0050.00515.57
7.1.70.0030.00816.86
7.1.60.0040.02119.82
7.1.50.0170.00716.64
7.1.00.0000.08022.51
7.0.200.0100.00316.95
7.0.140.0070.06722.21
7.0.60.0070.07319.96
7.0.50.0000.05017.95
7.0.40.0000.07320.15
7.0.30.0500.04720.17
7.0.20.0330.06320.30
7.0.10.0200.05020.06
7.0.00.0130.03320.08
5.6.280.0030.06721.04
5.6.210.0100.07020.71
5.6.200.0100.08318.19
5.6.190.0100.03720.57
5.6.180.0030.06320.51
5.6.170.0230.04020.43
5.6.160.0030.04020.57
5.6.150.0070.03718.19
5.6.140.0070.08018.19
5.6.130.0030.04318.11
5.6.120.0170.07721.13
5.6.110.0070.04321.13
5.6.100.0100.05321.00
5.6.90.0100.04021.01
5.6.80.0170.06720.50
5.6.70.3970.04320.38
5.5.350.0130.07020.41
5.5.340.0070.07718.03
5.5.330.0030.04020.31
5.5.320.0400.07720.23
5.5.310.0270.06320.37
5.5.300.0070.07318.08
5.5.290.0100.08017.96
5.5.280.0070.04720.87
5.5.270.0000.04720.88
5.5.260.0200.06320.86
5.5.250.0070.04720.71
5.5.240.0130.06320.28
5.4.450.0270.06319.17
5.4.440.0530.07019.58
5.4.430.0130.05019.54
5.4.420.0230.04319.36
5.4.410.0200.04719.31
5.4.400.0870.00018.75
5.4.390.0830.00018.68
5.4.380.0170.06318.73
5.4.370.0800.04018.77
5.4.360.0270.05018.50
5.4.350.0230.06018.61
5.4.340.0170.06318.55
5.4.320.0070.03512.48
5.4.310.0030.04012.48
5.4.300.0030.04312.48
5.4.290.0070.05112.48
5.4.280.0050.03612.37
5.4.270.0080.03412.38
5.4.260.0200.05718.91
5.4.250.0170.06319.00
5.4.240.0200.04318.84
5.4.230.0130.04718.79
5.4.220.0070.06319.05
5.4.210.0170.04318.93
5.4.200.0170.04318.94
5.4.190.0130.05718.99
5.4.180.0000.06018.84
5.4.170.0030.07018.72
5.4.160.0070.05718.93
5.4.150.0030.05718.90
5.4.140.0030.05316.30
5.4.130.0100.04316.38
5.4.120.0030.05016.57
5.4.110.0070.05016.35
5.4.100.0030.05716.42
5.4.90.0100.04316.43
5.4.80.0070.05016.35
5.4.70.0000.05316.32
5.4.60.0030.06716.31
5.4.50.0130.04016.24
5.4.40.0100.04716.60
5.4.30.0200.06016.39
5.4.20.0130.04016.37
5.4.10.0170.06716.36
5.4.00.0070.05015.97
5.3.290.0030.04312.80
5.3.280.0070.05014.75
5.3.270.0170.05314.76
5.3.260.0100.05014.46
5.3.250.0030.06014.62
5.3.240.0070.05014.50
5.3.230.0030.07014.49
5.3.220.0100.06314.60
5.3.210.0070.05314.72
5.3.200.0200.05714.41
5.3.190.0100.05014.34
5.3.180.0070.04714.56
5.3.170.0030.05014.57
5.3.160.0130.05714.58
5.3.150.0130.07014.58
5.3.140.0100.04714.45
5.3.130.0130.05014.57
5.3.120.0070.05714.25
5.3.110.0100.06314.57
5.3.100.0030.05014.03
5.3.90.0030.05013.79
5.3.80.0000.05313.86
5.3.70.0130.06314.02
5.3.60.0030.05314.06
5.3.50.0070.05713.96
5.3.40.0030.07713.64
5.3.30.0170.06313.85
5.3.20.0130.06313.69
5.3.10.0270.05013.59
5.3.00.0070.04713.66
5.2.170.0070.04311.07
5.2.160.0130.05311.14
5.2.150.0000.06010.90
5.2.140.0030.04710.89
5.2.130.0070.04311.10
5.2.120.0230.04011.25
5.2.110.0130.04711.10
5.2.100.0070.03711.11
5.2.90.0000.04311.10
5.2.80.0070.03711.10
5.2.70.0070.03711.02
5.2.60.0100.03710.98
5.2.50.0030.04311.02
5.2.40.0070.03711.08
5.2.30.0070.05010.89
5.2.20.0030.04010.89
5.2.10.0030.04710.92
5.2.00.0070.04310.80
5.1.60.0030.03310.14
5.1.50.0070.0409.88
5.1.40.0070.0339.87
5.1.30.0070.03710.17
5.1.20.0000.04010.43
5.1.10.0030.0379.99
5.1.00.0030.0409.95
5.0.50.0000.0308.43
5.0.40.0000.0278.25
5.0.30.0030.0438.07
5.0.20.0000.0308.11
5.0.10.0030.0278.13
5.0.00.0070.0338.06
4.4.90.0000.0236.14
4.4.80.0100.0176.14
4.4.70.0030.0206.14
4.4.60.0030.0206.14
4.4.50.0000.0206.14
4.4.40.0070.0436.14
4.4.30.0000.0236.14
4.4.20.0070.0176.14
4.4.10.0000.0306.14
4.4.00.0100.0236.14
4.3.110.0030.0206.14
4.3.100.0030.0306.14
4.3.90.0030.0206.14
4.3.80.0030.0336.14
4.3.70.0000.0236.14
4.3.60.0000.0206.14
4.3.50.0000.0306.14
4.3.40.0030.0306.14
4.3.30.0030.0306.14
4.3.20.0000.0236.14
4.3.10.0000.0236.14
4.3.00.0070.0239.23

preferences:
36.76 ms | 401 KiB | 5 Q