3v4l.org

run code in 300+ PHP versions simultaneously
<?php $name = "Anthony"; var_dump( mb_substr($name, 0, 7), mb_substr($name, 0, 20), mb_substr($name, 20, 20) );

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)
8.3.60.0070.00718.18
8.3.50.0090.00917.96
8.3.40.0070.00721.62
8.3.30.0150.00618.46
8.3.20.0000.00824.18
8.3.10.0050.00224.66
8.3.00.0000.00726.16
8.2.180.0100.00725.92
8.2.170.0110.00418.87
8.2.160.0110.00422.96
8.2.150.0070.00025.66
8.2.140.0040.00424.66
8.2.130.0100.00726.16
8.2.120.0000.00726.16
8.2.110.0030.00722.30
8.2.100.0090.00317.72
8.2.90.0040.00419.18
8.2.80.0040.00417.97
8.2.70.0030.00517.25
8.2.60.0000.00818.04
8.2.50.0040.00418.07
8.2.40.0080.00019.75
8.2.30.0000.00817.98
8.2.20.0000.00818.04
8.2.10.0030.00620.66
8.2.00.0050.00319.17
8.1.280.0110.00425.92
8.1.270.0040.00423.99
8.1.260.0040.00426.35
8.1.250.0030.00628.09
8.1.240.0070.00322.29
8.1.230.0040.00717.77
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0060.00317.36
8.1.190.0040.00417.23
8.1.180.0000.00918.74
8.1.170.0050.00318.54
8.1.160.0000.00818.70
8.1.150.0000.00718.55
8.1.140.0080.00020.90
8.1.130.0050.00218.70
8.1.120.0000.00717.43
8.1.110.0000.00817.40
8.1.100.0030.00317.29
8.1.90.0040.00417.43
8.1.80.0000.01117.32
8.1.70.0000.00717.35
8.1.60.0060.00317.48
8.1.50.0080.00417.43
8.1.40.0040.00417.51
8.1.30.0040.00417.62
8.1.20.0070.00417.54
8.1.10.0050.00317.41
8.1.00.0080.00317.37
8.0.300.0060.00318.77
8.0.290.0060.00316.63
8.0.280.0000.00818.44
8.0.270.0080.00017.92
8.0.260.0060.00018.57
8.0.250.0060.00316.83
8.0.240.0030.00316.91
8.0.230.0000.00716.93
8.0.220.0030.00316.86
8.0.210.0060.00016.93
8.0.200.0030.00316.87
8.0.190.0070.00316.93
8.0.180.0030.00716.90
8.0.170.0040.00416.75
8.0.160.0030.00616.86
8.0.150.0080.00016.80
8.0.140.0080.00016.72
8.0.130.0030.00313.24
8.0.120.0040.00416.84
8.0.110.0040.00416.87
8.0.100.0030.00516.83
8.0.90.0030.00616.89
8.0.80.0050.00216.85
8.0.70.0000.00716.84
8.0.60.0040.00416.77
8.0.50.0080.00016.86
8.0.30.0000.00816.70
8.0.20.0040.00416.96
8.0.10.0050.00216.81
8.0.00.0070.00016.96
7.4.330.0050.00015.55
7.4.320.0000.00616.51
7.4.300.0060.00016.54
7.4.290.0030.00316.48
7.4.280.0040.00416.34
7.4.270.0090.00016.44
7.4.260.0020.00213.21
7.4.250.0000.00716.36
7.4.240.0040.00416.51
7.4.230.0000.00716.51
7.4.220.0030.00316.24
7.4.210.0030.00316.47
7.4.200.0030.00316.62
7.4.190.0030.00316.39
7.4.180.0030.00316.34
7.4.160.0060.00016.41
7.4.150.0070.00016.56
7.4.140.0080.00016.55
7.4.130.0000.00716.23
7.4.120.0000.00716.57
7.4.110.0000.00716.37
7.4.100.0060.00016.49
7.4.90.0000.00716.21
7.4.80.0000.00716.09
7.4.70.0060.00316.21
7.4.60.0040.00416.36
7.4.50.0040.00416.13
7.4.40.0000.00816.15
7.4.30.0000.00716.49
7.4.20.0030.00316.29
7.4.10.0070.00016.29
7.4.00.0000.00816.36
7.3.330.0070.00016.20
7.3.320.0060.00013.07
7.3.310.0080.00016.21
7.3.300.0040.00416.13
7.3.290.0030.00315.99
7.3.280.0000.00616.16
7.3.270.0040.00416.18
7.3.260.0030.00316.04
7.3.250.0050.00216.15
7.3.240.0070.00016.15
7.3.230.0040.00416.17
7.3.220.0000.00816.08
7.3.210.0040.00416.06
7.3.200.0040.00416.07
7.3.190.0060.00016.07
7.3.180.0070.00016.07
7.3.170.0000.00715.97
7.3.160.0030.00316.00
7.3.150.0080.00016.06
7.3.140.0070.00016.06
7.3.130.0040.00416.05
7.3.120.0070.00016.09
7.3.110.0070.00015.79
7.3.100.0030.00315.85
7.3.90.0060.00016.33
7.3.80.0070.00015.96
7.3.70.0060.00016.06
7.3.60.0030.00316.20
7.3.50.0000.00716.29
7.3.40.0000.00716.15
7.3.30.0000.00616.20
7.3.20.0070.00016.24
7.3.10.0000.00816.02
7.3.00.0070.00016.09

preferences:
61.36 ms | 400 KiB | 5 Q