3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ 'Foo', 'bAr' => 'BaR', /*'suB' => [ 'a' => 1, 2 => 'b', 'C' => null, ], 'obj' => (object) [ 'd' => 1.333, 'SubArR' => [ 'This' => 'Is', 'a' => 'challenge', ] ]*/ ]; foreach ($array as &$v) { $v = strtolower($v); } var_export($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)
8.4.130.0120.00818.89
8.4.120.0120.00824.04
8.4.110.0090.01122.22
8.4.100.0100.01117.77
8.4.90.0130.00518.30
8.4.80.0110.00917.57
8.4.70.0120.00717.66
8.4.60.0060.00518.74
8.4.50.0150.00421.44
8.4.40.0120.00317.49
8.4.30.0190.00018.93
8.4.20.0000.01119.65
8.4.10.0080.00019.48
8.3.260.0100.00916.59
8.3.250.0090.01118.82
8.3.240.0080.00617.05
8.3.230.0140.00616.63
8.3.220.0120.00617.35
8.3.210.0120.00616.73
8.3.200.0050.00316.64
8.3.190.0080.00617.19
8.3.180.0100.01017.05
8.3.170.0160.00318.58
8.3.160.0090.00916.48
8.3.150.0090.00916.92
8.3.140.0080.00016.43
8.3.130.0060.00318.27
8.3.120.0030.00620.61
8.3.110.0060.00320.94
8.3.100.0030.01216.38
8.3.90.0070.00716.45
8.3.80.0330.01530.84
8.3.70.0460.00330.84
8.3.60.0390.00930.84
8.3.50.0130.00630.84
8.3.40.0280.01130.84
8.3.30.0280.01230.84
8.3.20.0190.01530.84
8.3.10.0220.00630.84
8.3.00.0290.00430.84
8.2.290.0120.00620.32
8.2.280.0070.00718.38
8.2.270.0120.00317.03
8.2.260.0030.00618.11
8.2.250.0040.00816.34
8.2.240.0070.01317.08
8.2.230.0000.00822.58
8.2.220.0040.00424.06
8.2.210.0110.00726.77
8.2.200.0190.00030.84
8.2.190.0190.00030.84
8.2.180.0160.00430.84
8.2.170.0240.00730.84
8.2.160.0320.01130.84
8.2.150.0330.01030.84
8.2.140.0350.01030.84
8.2.130.0280.01430.84
8.2.120.0310.01430.84
8.2.110.0350.00430.84
8.2.100.0250.00830.84
8.2.90.0090.01230.84
8.2.80.0280.00930.84
8.2.70.0420.00030.84
8.2.60.0390.00330.84
8.2.50.0310.01030.84
8.2.40.0260.01330.84
8.2.30.0300.01130.84
8.2.20.0290.01030.84
8.2.10.0330.00730.84
8.2.00.0360.00430.84
8.1.330.0110.00621.63
8.1.320.0120.00715.83
8.1.310.0110.00418.62
8.1.300.0100.01017.81
8.1.290.0330.00730.84
8.1.280.0250.01830.84
8.1.270.0250.02230.84
8.1.260.0360.01330.84
8.1.250.0230.00730.84
8.1.240.0200.00430.84
8.1.230.0170.00330.84
8.1.220.0130.00430.84
8.1.210.0240.00730.84
8.1.200.0230.00830.84
8.1.190.0230.00830.84
8.1.180.0210.00930.84
8.1.170.0330.00430.84
8.1.160.0110.00630.84
8.1.150.0270.01030.84
8.1.140.0080.00830.84
8.1.130.0110.00630.84
8.1.120.0210.00430.84
8.1.110.0310.00730.84
8.1.100.0420.00730.84
8.1.90.0310.00730.84
8.1.80.0320.00630.84
8.1.70.0240.01430.84
8.1.60.0310.00830.84
8.1.50.0300.00730.84
8.1.40.0290.00630.84
8.1.30.0160.00330.84
8.1.20.0200.00030.84
8.1.10.0230.00430.84
8.1.00.0290.00930.84

preferences:
27.94 ms | 403 KiB | 5 Q