3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [1, 2]; $a[] = &$b; $b = 4; print_r($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)
8.3.70.0170.00316.62
8.3.60.0140.00716.50
8.3.50.0150.00416.48
8.3.40.0140.00722.02
8.3.30.0070.00718.85
8.3.20.0050.00324.18
8.3.10.0030.00624.66
8.3.00.0050.00326.16
8.2.190.0100.01018.18
8.2.180.0070.00716.38
8.2.170.0100.01022.96
8.2.160.0100.00322.96
8.2.150.0020.00525.66
8.2.140.0020.00524.66
8.2.130.0000.00726.16
8.2.120.0000.00721.02
8.2.110.0090.00921.04
8.2.100.0090.00317.72
8.2.90.0000.00817.63
8.2.80.0040.00418.91
8.2.70.0000.00817.63
8.2.60.0040.00417.50
8.2.50.0000.00817.55
8.2.40.0110.00617.72
8.2.30.0050.01117.72
8.2.20.0060.01117.72
8.2.10.0120.00517.72
8.2.00.0140.00317.72
8.1.280.0120.00925.92
8.1.270.0030.00324.66
8.1.260.0020.00526.35
8.1.250.0070.00028.09
8.1.240.0140.00322.58
8.1.230.0030.00719.04
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0050.00317.10
8.1.190.0040.00417.10
8.1.180.0040.00418.10
8.1.170.0080.00817.72
8.1.160.0130.00317.72
8.1.150.0120.00417.72
8.1.140.0060.00318.96
8.1.130.0110.00517.72
8.1.120.0130.00417.72
8.1.110.0120.00917.72
8.1.100.0140.00317.72
8.1.90.0120.00417.72
8.1.80.0100.00617.72
8.1.70.0110.00517.72
8.1.60.0120.00617.72
8.1.50.0110.00717.72
8.1.40.0110.00717.72
8.1.30.0140.00317.72
8.1.20.0090.00917.72
8.1.10.0110.00617.72
8.1.00.0120.00617.72
8.0.300.0040.00418.77
8.0.290.0070.00016.63
8.0.280.0080.00817.72
8.0.270.0110.00617.72
8.0.260.0120.00517.72
8.0.250.0180.00317.72
8.0.240.0150.00417.72
8.0.230.0140.00317.72
8.0.220.0100.00717.72
8.0.210.0150.00317.72
8.0.200.0140.00217.72
8.0.190.0140.00317.72
8.0.180.0080.00817.72
8.0.170.0110.00717.72
8.0.160.0170.00017.72
8.0.150.0140.00317.72
8.0.140.0110.00517.72
8.0.130.0140.00417.72
8.0.120.0130.00417.72
8.0.110.0090.00617.72
8.0.100.0080.00817.72
8.0.90.0130.00317.72
8.0.80.0110.00517.72
8.0.70.0120.00417.72
8.0.60.0130.00317.72
8.0.50.0110.00617.72
8.0.30.0170.00017.72
8.0.20.0070.01017.72
8.0.10.0120.00417.72

preferences:
32.21 ms | 401 KiB | 5 Q