3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = ["a", "b", "a", "c"]; var_export( array_map( function ($v) { static $lookup = []; $lookup[$v] ??= 0; return $v . ($lookup[$v]++ ?: ''); }, $array ) );

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)
8.5.00.0090.01220.15
8.4.150.0030.00014.05
8.4.140.0110.00917.82
8.4.130.0050.00419.52
8.4.120.0080.01020.77
8.4.110.0100.00722.35
8.4.100.0120.00917.82
8.4.90.0130.01018.61
8.4.80.0030.00519.16
8.4.70.0040.00417.81
8.4.60.0070.00418.98
8.4.50.0060.00418.69
8.4.40.0140.00517.46
8.4.30.0160.00318.65
8.4.20.0130.00619.61
8.4.10.0130.00319.46
8.3.280.0120.00818.30
8.3.270.0110.00816.79
8.3.260.0110.00916.38
8.3.250.0120.00718.82
8.3.240.0110.00816.54
8.3.230.0130.00616.62
8.3.220.0050.00318.98
8.3.210.0080.01116.89
8.3.200.0060.00216.63
8.3.190.0050.00318.85
8.3.180.0080.01216.62
8.3.170.0090.00919.08
8.3.160.0130.00620.43
8.3.150.0130.00617.13
8.3.140.0000.00818.99
8.3.130.0070.01118.48
8.3.120.0070.01020.60
8.3.110.0060.00316.54
8.3.100.0090.00024.06
8.3.90.0120.00626.77
8.3.80.0070.00318.43
8.3.70.0080.00816.75
8.3.60.0140.00718.30
8.3.50.0120.00816.32
8.3.40.0090.00619.85
8.3.30.0030.01021.78
8.3.20.0000.00824.18
8.3.10.0050.00324.66
8.3.00.0040.00426.16
8.2.290.0160.00520.30
8.2.280.0120.00820.02
8.2.270.0130.00317.29
8.2.260.0140.00418.38
8.2.250.0040.01216.61
8.2.240.0090.00017.01
8.2.230.0000.00920.94
8.2.220.0060.00337.54
8.2.210.0080.01126.77
8.2.200.0100.00018.54
8.2.190.0070.01118.54
8.2.180.0100.01016.88
8.2.170.0110.00319.11
8.2.160.0030.01022.96
8.2.150.0000.00825.66
8.2.140.0080.00024.66
8.2.130.0070.00026.16
8.2.120.0130.00619.23
8.2.110.0280.00719.36
8.2.100.0400.00317.38
8.2.90.0350.00617.50
8.2.80.0270.00517.38
8.2.70.0290.01317.50
8.2.60.0320.00917.36
8.2.50.0330.00717.25
8.2.40.0280.00917.75
8.2.30.0310.00717.38
8.2.20.0300.01217.25
8.2.10.0310.00817.50
8.2.00.0250.01817.13
8.1.330.0140.00421.79
8.1.320.0080.01115.97
8.1.310.0040.00416.57
8.1.300.0080.00818.57
8.1.290.0040.00430.84
8.1.280.0100.00725.92
8.1.270.0060.00322.19
8.1.260.0070.00026.35
8.1.250.0420.00317.12
8.1.240.0180.00617.13
8.1.230.0190.00917.35
8.1.220.0120.00817.48
8.1.210.0140.00617.25
8.1.200.0050.01517.12
8.1.190.0110.00817.34
8.1.180.0190.00017.13
8.1.170.0130.00417.13
8.1.160.0300.00717.25
8.1.150.0140.00617.00
8.1.140.0120.00617.25
8.1.130.0340.00417.13
8.1.120.0140.00317.34
8.1.110.0110.00617.35
8.1.100.0130.00417.34
8.1.90.0160.00817.13
8.1.80.0180.00017.22
8.1.70.0130.00517.35
8.1.60.0180.00417.13
8.1.50.0210.00716.98
8.1.40.0160.01317.00
8.1.30.0320.01017.46
8.1.20.0220.01417.59
8.1.10.0180.00717.13
8.1.00.0160.00317.13
8.0.300.0130.00416.50
8.0.290.0120.00616.50
8.0.280.0190.00016.63
8.0.270.0080.01216.36
8.0.260.0120.00716.37
8.0.250.0180.00016.34
8.0.240.0190.00016.34
8.0.230.0180.00016.38
8.0.220.0120.00616.24
8.0.210.0100.01018.09
8.0.200.0120.00616.63
8.0.190.0200.00016.47
8.0.180.0160.00316.50
8.0.170.0140.00316.63
8.0.160.0140.00516.38
8.0.150.0160.00316.37
8.0.140.0150.00318.25
8.0.130.0180.00018.49
8.0.120.0080.00818.38
8.0.110.0150.00318.49
8.0.100.0170.00016.38
8.0.90.0150.00316.38
8.0.80.0110.00716.34
8.0.70.0170.00317.93
8.0.60.0140.00416.50
8.0.50.0140.00416.38
8.0.30.0180.00016.25
8.0.20.0150.00316.63
8.0.10.0120.00416.50

preferences:
36.48 ms | 403 KiB | 5 Q