3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 'k5'; echo preg_replace('/k(\d+)/', 'k-${1}', $x);

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)
8.3.60.0140.00716.49
8.3.50.0090.00620.15
8.3.40.0070.01420.22
8.3.30.0120.00318.79
8.3.20.0000.00824.18
8.3.10.0110.00024.66
8.3.00.0040.00426.16
8.2.180.0000.01925.92
8.2.170.0120.00919.09
8.2.160.0030.01022.96
8.2.150.0040.00425.66
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0050.00226.16
8.2.110.0220.00321.15
8.2.100.0000.01118.03
8.2.90.0040.00417.75
8.2.80.0080.00018.98
8.2.70.0040.00417.75
8.2.60.0060.00317.75
8.2.50.0000.00818.04
8.2.40.0040.00418.10
8.2.30.0040.00418.01
8.2.20.0000.00819.25
8.2.10.0030.00518.01
8.2.00.0050.00219.26
8.1.280.0090.00925.92
8.1.270.0040.00424.66
8.1.260.0070.00026.35
8.1.250.0030.00528.09
8.1.240.0060.00320.88
8.1.230.0080.00320.89
8.1.220.0000.00818.70
8.1.210.0040.00418.77
8.1.200.0000.00917.23
8.1.190.0040.00417.36
8.1.180.0070.00418.10
8.1.170.0050.00317.62
8.1.160.0000.00718.76
8.1.150.0040.00418.78
8.1.140.0070.00017.59
8.1.130.0040.00419.04
8.1.120.0070.00017.56
8.1.110.0060.00317.52
8.1.100.0080.00517.39
8.1.90.0070.00717.33
8.1.80.0110.00417.46
8.1.70.0090.00617.36
8.1.60.0190.00017.54
8.1.50.0170.00017.54
8.1.40.0180.00017.50
8.1.30.0140.00417.57
8.1.20.0100.01017.66
8.1.10.0070.01017.55
8.1.00.0050.01417.52
8.0.300.0040.00418.77
8.0.290.0030.00516.88
8.0.280.0030.00518.58
8.0.270.0000.00716.92
8.0.260.0040.00418.47
8.0.250.0030.00317.09
8.0.240.0000.00817.07
8.0.230.0070.00716.99
8.0.220.0120.00416.79
8.0.210.0100.00616.86
8.0.200.0130.00516.97
8.0.190.0090.00516.79
8.0.180.0080.00816.84
8.0.170.0110.00516.83
8.0.160.0080.00816.91
8.0.150.0070.00716.84
8.0.140.0060.00916.89
8.0.130.0150.00016.86
8.0.120.0150.00016.88
8.0.110.0070.00716.93
8.0.100.0080.00816.80
8.0.90.0070.01016.80
8.0.80.0110.00516.96
8.0.70.0130.00316.75
8.0.60.0110.00516.94
8.0.50.0110.00416.97
8.0.30.0120.00416.72
8.0.20.0080.00416.88
8.0.10.0100.00316.96
7.4.330.0030.00315.55
7.4.320.0030.00316.73
7.4.300.0060.00616.63
7.4.290.0150.00016.64
7.4.280.0100.00516.47
7.4.270.0000.01216.49
7.4.260.0100.00516.50
7.4.250.0110.00616.50
7.4.240.0160.00016.70
7.4.230.0150.00016.50
7.4.220.0100.00716.68
7.4.210.0100.00716.62
7.4.200.0110.00516.72
7.4.190.0100.00616.59
7.4.180.0150.00016.70
7.4.160.0150.00016.71
7.4.150.0120.00316.63
7.4.140.0110.00516.61
7.4.130.0150.00016.59
7.4.120.0150.00016.52
7.4.110.0100.00516.68
7.4.100.0110.00416.75
7.4.90.0050.01016.66
7.4.80.0120.00216.61
7.4.70.0140.00316.44
7.4.60.0120.00416.50
7.4.50.0110.00416.48
7.4.40.0080.00416.51
7.4.30.0110.00416.43
7.4.20.0090.00416.50
7.4.10.0070.00716.53
7.4.00.0100.00316.57

preferences:
52.51 ms | 401 KiB | 5 Q