3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(mb_chr(0)); var_dump(mb_substitute_character(0));

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)
8.3.60.0170.00318.17
8.3.50.0140.00718.11
8.3.40.0070.01318.89
8.3.30.0140.00018.41
8.3.20.0040.00421.77
8.3.10.0040.00420.21
8.3.00.0040.00423.48
8.2.180.0130.00716.38
8.2.170.0120.00322.96
8.2.160.0070.01021.02
8.2.150.0050.00225.66
8.2.140.0000.00724.66
8.2.130.0080.00026.16
8.2.120.0070.00026.16
8.2.110.0030.00722.25
8.2.100.0060.00617.91
8.2.90.0060.00318.92
8.2.80.0000.00817.97
8.2.70.0040.00417.50
8.2.60.0000.00817.50
8.2.50.0080.00017.55
8.2.40.0030.00619.75
8.2.30.0070.00017.82
8.2.20.0070.00017.97
8.2.10.0000.00719.21
8.2.00.0030.00319.16
8.1.280.0150.00025.92
8.1.270.0040.00423.99
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0030.00623.84
8.1.230.0080.00317.70
8.1.220.0000.00717.74
8.1.210.0090.00018.77
8.1.200.0090.00017.22
8.1.190.0070.00017.10
8.1.180.0040.00418.10
8.1.170.0040.00417.62
8.1.160.0080.00018.63
8.1.150.0000.00718.71
8.1.140.0000.00718.74
8.1.130.0080.00020.05
8.1.120.0030.00517.35
8.1.110.0050.00317.25
8.1.100.0030.00317.30
8.1.90.0030.00517.23
8.1.80.0070.00017.34
8.1.70.0030.00317.28
8.1.60.0000.00817.48
8.1.50.0050.00217.40
8.1.40.0080.00017.40
8.1.30.0040.00417.43
8.1.20.0090.00017.54
8.1.10.0040.00417.30
8.1.00.0000.00817.32
8.0.300.0030.00718.77
8.0.290.0050.00216.75
8.0.280.0000.00818.30
8.0.270.0000.00717.93
8.0.260.0040.00421.73
8.0.250.0030.00316.85
8.0.240.0000.00716.70
8.0.230.0060.00016.68
8.0.220.0040.00416.80
8.0.210.0000.00616.74
8.0.200.0030.00316.68
8.0.190.0090.00016.82
8.0.180.0000.00716.78
8.0.170.0040.00416.68
8.0.160.0030.00616.74
8.0.150.0070.00016.66
8.0.140.0000.00716.72
8.0.130.0050.00013.21
8.0.120.0000.00716.70
8.0.110.0000.00716.69
8.0.100.0000.00816.60
8.0.90.0090.00016.63
8.0.80.0040.01216.73
8.0.70.0000.00716.65
8.0.60.0080.00016.71
8.0.50.0000.00716.73
8.0.30.0130.01316.84
8.0.20.0110.01117.03
8.0.10.0050.00216.75
8.0.00.0090.00916.59
7.4.330.0000.00515.55
7.4.320.0000.00616.35
7.4.300.0000.00716.49
7.4.290.0070.00016.45
7.4.280.0080.00016.43
7.4.270.0050.00316.30
7.4.260.0000.00513.12
7.4.250.0080.00016.29
7.4.240.0040.00416.41
7.4.230.0030.00316.43
7.4.220.0030.00316.45
7.4.210.0040.01216.44
7.4.200.0070.00016.44
7.4.130.0100.00616.46
7.4.120.0130.00516.19
7.4.110.0080.01616.35
7.4.100.0110.00716.32
7.4.90.0120.00416.32
7.4.80.0100.00619.39
7.4.70.0090.00916.50
7.4.60.0100.00716.38
7.4.50.0060.00616.18
7.4.40.0060.01216.44
7.4.30.0030.01516.33
7.4.20.0070.01016.36
7.4.10.0140.00916.37
7.4.00.0180.00316.41
7.3.330.0000.00716.19
7.3.320.0020.00313.10
7.3.310.0030.00316.07
7.3.300.0000.00716.21
7.3.290.0070.00916.15
7.3.280.0100.01016.12
7.3.260.0120.00816.31
7.3.230.0140.00316.36
7.3.210.0040.01316.45
7.3.200.0110.00616.26
7.3.190.0060.01516.12
7.3.180.0060.01116.27
7.3.170.0060.00916.11
7.3.160.0030.01716.45
7.3.150.0140.00516.09
7.3.140.0070.01016.28
7.3.130.0070.01116.30
7.3.120.0080.00816.14
7.3.110.0120.00616.29
7.3.100.0120.00616.29
7.3.90.0130.00516.35
7.3.80.0130.00416.39
7.3.70.0040.01416.20
7.3.60.0130.00616.16
7.3.50.0160.00616.24
7.3.40.0000.01616.12
7.3.30.0090.01216.10
7.3.20.0080.01618.09
7.3.10.0120.00918.19
7.3.00.0060.01117.93
7.2.330.0090.00916.47
7.2.320.0110.00716.26
7.2.310.0040.01716.38
7.2.300.0120.00416.41
7.2.290.0060.01616.52
7.2.280.0150.00716.46
7.2.270.0070.01016.17
7.2.260.0140.00716.43
7.2.250.0120.00616.52
7.2.240.0110.00716.22
7.2.230.0070.01016.43
7.2.220.0100.00716.22
7.2.210.0070.01016.55
7.2.200.0130.00616.50
7.2.190.0090.01216.27
7.2.180.0060.01216.33
7.2.170.0100.01016.37
7.2.160.0090.00916.49
7.2.150.0170.00617.95
7.2.140.0120.00818.32
7.2.130.0190.00318.27
7.2.120.0140.00418.20
7.2.110.0040.01518.13
7.2.100.0070.01118.32
7.2.90.0150.00918.25
7.2.80.0060.01818.22
7.2.70.0200.00618.04
7.2.60.0200.00018.35
7.2.50.0090.01218.30
7.2.40.0270.00018.17
7.2.30.0120.00918.14
7.2.20.0100.01318.24
7.2.10.0060.01818.17
7.2.00.0130.00718.07

preferences:
30.96 ms | 400 KiB | 5 Q