3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo mb_strtolower('Üüu§') . ' vs ' . strtolower('Üüu§');

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)
8.4.120.0120.00724.19
8.4.110.0110.00918.61
8.4.100.0090.01118.71
8.4.90.0120.00822.42
8.4.80.0120.00718.46
8.4.70.0130.00618.58
8.4.60.0080.00318.92
8.4.50.0110.00920.18
8.4.40.0060.01017.44
8.4.30.0080.00018.93
8.4.20.0040.00419.54
8.4.10.0120.00319.42
8.3.250.0080.01019.16
8.3.240.0140.00416.83
8.3.230.0130.00716.50
8.3.220.0140.00518.83
8.3.210.0080.01018.44
8.3.200.0060.00316.73
8.3.190.0120.00718.97
8.3.180.0110.01019.11
8.3.170.0090.00920.61
8.3.160.0120.00616.71
8.3.150.0120.00817.21
8.3.140.0070.00016.45
8.3.130.0080.00816.38
8.3.120.0090.00019.02
8.3.110.0040.00416.63
8.3.100.0000.00916.37
8.3.90.0110.00318.34
8.3.80.0450.00330.84
8.3.70.0410.00730.84
8.3.60.0390.01030.84
8.3.50.0190.00030.84
8.3.40.0360.00730.84
8.3.30.0320.00630.84
8.3.20.0180.00630.84
8.3.10.0320.00530.84
8.3.00.0370.00330.84
8.2.290.0120.00620.43
8.2.280.0060.00318.22
8.2.270.0070.01117.10
8.2.260.0000.00816.37
8.2.250.0130.00316.49
8.2.240.0090.00616.50
8.2.230.0040.00720.94
8.2.220.0120.00324.06
8.2.210.0100.00726.77
8.2.200.0370.01030.84
8.2.190.0260.00730.84
8.2.180.0200.00830.84
8.2.170.0130.00730.84
8.2.160.0180.00030.84
8.2.150.0180.00330.84
8.2.140.0190.00030.84
8.2.130.0100.00630.84
8.2.120.0120.00530.84
8.2.110.0130.00330.84
8.2.100.0060.01130.84
8.2.90.0130.00330.84
8.2.80.0120.00630.84
8.2.70.0120.00630.84
8.2.60.0160.00030.84
8.2.50.0100.00530.84
8.2.40.0160.00330.84
8.2.30.0250.01330.84
8.2.20.0210.00030.84
8.2.10.0040.01130.84
8.2.00.0150.00030.84
8.1.330.0120.00721.84
8.1.320.0120.00617.80
8.1.310.0070.00716.41
8.1.300.0090.00018.18
8.1.290.0120.00430.84
8.1.280.0120.00430.84
8.1.270.0140.00330.84
8.1.260.0070.00730.84
8.1.250.0130.00430.84
8.1.240.0150.00030.84
8.1.230.0040.00930.84
8.1.220.0080.00830.84
8.1.210.0120.00430.84
8.1.200.0130.00330.84
8.1.190.0120.00230.84
8.1.180.0140.00030.84
8.1.170.0120.00330.84
8.1.160.0070.00730.84
8.1.150.0100.00330.84
8.1.140.0120.00330.84
8.1.130.0110.00430.84
8.1.120.0110.00430.84
8.1.110.0130.00330.84
8.1.100.0120.00330.84
8.1.90.0150.00030.84
8.1.80.0120.00330.84
8.1.70.0140.00030.84
8.1.60.0110.00730.84
8.1.50.0160.00330.84
8.1.40.0140.00530.84
8.1.30.0180.00030.84
8.1.20.0070.00730.84
8.1.10.0130.00330.84
8.1.00.0100.00730.84

preferences:
27.99 ms | 403 KiB | 5 Q