3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['a']; $b = &$a; var_dump($a, $b); $b[] = 'b'; var_dump($a, $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)
8.3.60.0040.01118.30
8.3.50.0070.00718.07
8.3.40.0040.01118.73
8.3.30.0110.00418.39
8.3.20.0040.00420.18
8.3.10.0040.00421.73
8.3.00.0050.00319.56
8.2.180.0100.01018.29
8.2.170.0120.00322.96
8.2.160.0150.00019.16
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0030.00526.16
8.2.120.0070.00019.95
8.2.110.0030.00622.10
8.2.100.0080.00317.85
8.2.90.0030.00518.22
8.2.80.0080.00017.97
8.2.70.0030.00617.62
8.2.60.0040.00417.91
8.2.50.0040.00418.10
8.2.40.0050.00320.50
8.2.30.0050.00319.17
8.2.20.0050.00317.55
8.2.10.0000.00718.02
8.2.00.0000.00717.98
8.1.280.0070.00725.92
8.1.270.0040.00423.82
8.1.260.0060.00326.35
8.1.250.0060.00628.09
8.1.240.0030.00623.92
8.1.230.0040.00820.93
8.1.220.0060.00317.74
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0080.00017.23
8.1.180.0080.00018.10
8.1.170.0040.00418.58
8.1.160.0050.00322.18
8.1.150.0050.00218.78
8.1.140.0040.00419.53
8.1.130.0000.00817.63
8.1.120.0000.00817.40
8.1.110.0040.00417.40
8.1.100.0040.00417.42
8.1.90.0030.00517.38
8.1.80.0000.00717.27
8.1.70.0000.00717.34
8.1.60.0040.00417.45
8.1.50.0030.00517.49
8.1.40.0040.00417.45
8.1.30.0080.00017.64
8.1.20.0040.00417.50
8.1.10.0000.00717.30
8.1.00.0000.00717.20
8.0.300.0000.00720.00
8.0.290.0000.00716.58
8.0.280.0040.00418.43
8.0.270.0030.00317.18
8.0.260.0000.00617.13
8.0.250.0070.00016.86
8.0.240.0030.00316.84
8.0.230.0070.00016.86
8.0.220.0030.00316.78
8.0.210.0080.00016.70
8.0.200.0070.00016.85
8.0.190.0040.00416.79
8.0.180.0000.00916.81
8.0.170.0080.00016.83
8.0.160.0000.00716.72
8.0.150.0000.00716.80
8.0.140.0000.00716.80
8.0.130.0000.00613.18
8.0.120.0000.00916.73
8.0.110.0000.00816.73
8.0.100.0040.00416.79
8.0.90.0030.00316.62
8.0.80.0030.01616.81
8.0.70.0050.00316.77
8.0.60.0000.00716.72
8.0.50.0040.00416.79
8.0.30.0140.00617.10
8.0.20.0100.01117.40
8.0.10.0040.00416.82
8.0.00.0110.00716.69
7.4.330.0000.00515.08
7.4.320.0000.00616.33
7.4.300.0000.00816.38
7.4.290.0000.00616.43
7.4.280.0030.00616.43
7.4.270.0030.00316.54
7.4.260.0030.00616.52
7.4.250.0080.00016.44
7.4.240.0070.00016.46
7.4.230.0030.00316.62
7.4.220.0140.00416.42
7.4.210.0140.00616.55
7.4.200.0040.00416.52
7.4.160.0110.00516.45
7.4.150.0140.00917.40
7.4.140.0100.01017.86
7.4.130.0130.00716.42
7.4.120.0050.01216.50
7.4.110.0150.00316.54
7.4.100.0130.00316.42
7.4.90.0090.00916.45
7.4.80.0060.01119.39
7.4.70.0100.00616.29
7.4.60.0080.01116.40
7.4.50.0090.00616.33
7.4.40.0100.00716.53
7.4.30.0110.01116.52
7.4.00.0070.00715.04
7.3.330.0030.00312.95
7.3.320.0000.00612.99
7.3.310.0030.00316.14
7.3.300.0000.00716.10
7.3.290.0060.00816.22
7.3.280.0090.00816.14
7.3.270.0110.01117.40
7.3.260.0090.00916.43
7.3.250.0090.00816.18
7.3.240.0080.00816.29
7.3.230.0100.00716.39
7.3.210.0110.00816.23
7.3.200.0100.00716.18
7.3.190.0090.00916.27
7.3.180.0130.00816.26
7.3.170.0100.01016.26
7.3.160.0070.01216.27
7.3.10.0080.01316.62
7.3.00.0120.00616.12
7.2.330.0130.01016.16
7.2.320.0030.01516.53
7.2.310.0170.00716.52
7.2.300.0080.01416.50
7.2.290.0030.01416.28
7.2.130.0030.01716.26
7.2.120.0040.00816.55
7.2.110.0070.01116.50
7.2.100.0100.00316.27
7.2.90.0050.00916.07
7.2.80.0080.00516.56
7.2.70.0130.01616.39
7.2.60.0130.00616.70
7.2.50.0080.00816.56
7.2.40.0090.00416.43
7.2.30.0170.00216.53
7.2.20.0030.01216.50
7.2.10.0100.00716.70
7.2.00.0110.00617.52
7.1.250.0000.01315.46
7.1.200.0100.00315.62
7.1.70.0000.00917.11
7.1.60.0000.01019.87
7.1.00.0070.07322.57
7.0.200.0410.00014.71
7.0.70.0730.06019.88
7.0.60.0900.05020.03
7.0.50.0830.06320.44
7.0.40.0870.05020.34
7.0.30.0700.07020.29
7.0.20.0770.06020.30
7.0.10.0770.06020.17
7.0.00.0770.06320.39
5.6.280.0030.07321.09
5.6.220.0730.05320.61
5.6.210.0630.06020.68
5.6.200.0800.05321.12
5.6.190.0630.05721.01
5.6.180.0770.06320.98
5.6.170.0700.05721.19
5.6.160.0800.04321.17
5.6.150.0700.05320.99
5.6.140.0700.05721.07
5.6.130.0600.06321.16
5.6.120.0070.07021.13
5.6.110.0430.05721.07
5.6.100.0630.06021.11
5.6.90.0670.06321.05
5.6.80.0530.06720.47
5.6.70.0630.06020.45
5.6.60.0670.06720.56
5.6.50.0700.05720.52
5.6.40.0700.05720.34
5.6.30.0670.06020.38
5.6.20.0700.05020.52
5.6.10.0670.05720.44
5.6.00.0730.06020.43
5.5.360.0930.07320.39
5.5.350.0700.07320.47
5.5.340.0730.05320.94
5.5.330.0630.05320.71
5.5.320.0800.04720.88
5.5.310.0670.07020.92
5.5.300.0800.05320.94
5.5.290.0630.06320.91
5.5.280.0230.07320.84
5.5.270.0830.08720.97
5.5.260.0770.05320.87
5.5.250.0730.06020.64
5.5.240.0730.06020.21
5.5.230.0700.05320.25
5.5.220.0870.06320.31
5.5.210.0800.07320.32
5.5.200.0770.05020.13
5.5.190.0700.06020.20
5.5.180.0670.05720.27
5.5.160.0670.05720.27
5.5.150.0630.06020.27
5.5.140.0730.05020.21
5.5.130.0630.05720.02
5.5.120.0670.05020.05
5.5.110.0700.05020.13
5.5.100.0670.05320.18
5.5.90.0570.05320.18
5.5.80.0570.06320.21
5.5.70.0530.06320.07
5.5.60.0830.04020.12
5.5.50.0800.04020.11
5.5.40.0670.05720.04
5.5.30.0700.05320.07
5.5.20.0570.06720.07
5.5.10.0670.05720.14
5.5.00.0700.05020.07

preferences:
60.73 ms | 401 KiB | 5 Q