3v4l.org

run code in 300+ PHP versions simultaneously
<?php strtolower(NULL); mb_strtolower(NULL);

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)
8.4.120.0130.00820.63
8.4.110.0140.00818.80
8.4.100.0140.00617.64
8.4.90.0130.00817.75
8.4.80.0110.00817.49
8.4.70.0130.00719.46
8.4.60.0110.00920.05
8.4.50.0120.00718.72
8.4.40.0130.00719.41
8.4.30.0200.00020.19
8.4.20.0130.00618.21
8.4.10.0030.00625.95
8.3.250.0120.00618.89
8.3.240.0070.01016.76
8.3.230.0120.00816.58
8.3.220.0140.00518.33
8.3.210.0100.00916.61
8.3.200.0040.00516.45
8.3.190.0050.00316.84
8.3.180.0080.00616.80
8.3.170.0070.00416.80
8.3.160.0120.00618.30
8.3.150.0060.01318.82
8.3.140.0090.00618.78
8.3.130.0040.00418.51
8.3.120.0080.00018.85
8.3.110.0030.00620.94
8.3.100.0100.00024.06
8.3.90.0040.01126.77
8.3.80.0000.00916.88
8.3.70.0030.01216.58
8.3.60.0130.00618.43
8.3.50.0120.00320.36
8.3.40.0170.00318.42
8.3.30.0040.01118.98
8.3.20.0040.00424.18
8.3.10.0040.00424.66
8.3.00.0080.00026.16
8.2.290.0100.00820.34
8.2.280.0060.00220.05
8.2.270.0130.00616.85
8.2.260.0040.01116.76
8.2.250.0000.00818.53
8.2.240.0080.00016.87
8.2.230.0050.00322.58
8.2.220.0060.00337.54
8.2.210.0040.00426.77
8.2.200.0040.00416.50
8.2.190.0150.00316.63
8.2.180.0120.00325.92
8.2.170.0050.00818.86
8.2.160.0130.00722.96
8.2.150.0040.00425.66
8.2.140.0040.00424.66
8.2.130.0000.00726.16
8.2.120.0040.00426.16
8.2.110.0100.00720.44
8.2.100.0080.00317.78
8.2.90.0000.00817.63
8.2.80.0080.00018.54
8.2.70.0040.00417.63
8.2.60.0060.00317.38
8.2.50.0040.00417.98
8.2.40.0040.00417.78
8.2.30.0040.00417.93
8.2.20.0040.00420.33
8.2.10.0030.00517.83
8.2.00.0040.00418.98
8.1.330.0090.00818.27
8.1.320.0110.00816.14
8.1.310.0000.00816.36
8.1.300.0120.00319.82
8.1.290.0030.00630.84
8.1.280.0110.00425.92
8.1.270.0050.00223.99
8.1.260.0000.00826.35
8.1.250.0040.01128.09
8.1.240.0040.00423.83
8.1.230.0110.00020.94
8.1.220.0080.00018.20
8.1.210.0040.00418.77
8.1.200.0060.00517.23
8.1.190.0040.00417.10
8.1.180.0000.00818.10
8.1.170.0070.00017.62
8.1.160.0030.00318.70
8.1.150.0050.00218.56
8.1.140.0000.00717.29
8.1.130.0030.00318.77
8.1.120.0070.00017.43
8.1.110.0060.00317.37
8.1.100.0050.00317.39
8.1.90.0000.00817.31
8.1.80.0090.00017.40
8.1.70.0030.00317.36
8.1.60.0050.00217.45
8.1.50.0210.00017.32
8.1.40.0210.00417.41
8.1.30.0260.00017.45
8.1.20.0190.00517.37
8.1.10.0210.00317.45
8.1.00.0170.00917.37
8.0.300.0060.00318.77
8.0.290.0090.00016.63
8.0.280.0030.00318.33
8.0.270.0070.00016.70
8.0.260.0030.00318.36
8.0.250.0030.00316.80
8.0.240.0040.00416.89
8.0.230.0040.00416.88
8.0.220.0020.00516.79
8.0.210.0000.00616.87
8.0.200.0000.00716.77
8.0.190.0080.00016.84
8.0.180.0100.00416.66
8.0.170.0180.00316.70
8.0.160.0150.00616.76
8.0.150.0130.00816.77
8.0.140.0100.01016.68
8.0.130.0160.00616.70
8.0.120.0140.00816.78
8.0.110.0130.00816.66
8.0.100.0210.00016.80
8.0.90.0130.00716.74
8.0.80.0180.00416.87
8.0.70.0200.00016.61
8.0.60.0140.00716.64
8.0.50.0130.00916.63
8.0.30.0140.00716.80
8.0.20.0120.00916.67
8.0.10.0120.00816.84
7.4.330.0000.00415.55
7.4.320.0000.00716.53
7.4.300.0000.00716.47
7.4.290.0000.00816.28
7.4.280.0130.00716.47
7.4.270.0190.00016.38
7.4.260.0240.00016.36
7.4.250.0080.00716.36
7.4.240.0150.00716.49
7.4.230.0230.00016.36
7.4.220.0160.00416.39
7.4.210.0170.00316.24
7.4.200.0150.00616.31
7.4.190.0130.00716.53
7.4.180.0150.00516.33
7.4.160.0160.00316.45
7.4.150.0170.00416.27
7.4.140.0110.00316.22
7.4.130.0100.01016.25
7.4.120.0160.00316.23
7.4.110.0120.00816.16
7.4.100.0130.00916.38
7.4.90.0170.00216.13
7.4.80.0150.00316.16
7.4.70.0110.00416.32
7.4.60.0150.00316.29
7.4.50.0110.00816.10
7.4.40.0110.00716.17
7.4.30.0130.00016.22
7.4.20.0180.00016.25
7.4.10.0110.00316.21
7.4.00.0040.00416.18

preferences:
28.04 ms | 403 KiB | 5 Q