3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(substr('Ä', 1));

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)
8.3.60.0110.01118.18
8.3.50.0110.00716.20
8.3.40.0070.00718.58
8.3.30.0110.00418.52
8.3.20.0040.00421.60
8.3.10.0050.00323.48
8.3.00.0040.00421.09
8.2.180.0040.01116.63
8.2.170.0150.00322.96
8.2.160.0070.00720.41
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0000.00820.22
8.2.120.0040.00426.35
8.2.110.0000.00920.95
8.2.100.0040.00817.66
8.2.90.0000.00718.09
8.2.80.0040.00417.97
8.2.70.0050.00317.63
8.2.60.0040.00417.38
8.2.50.0000.00818.10
8.2.40.0040.00422.28
8.2.30.0000.00719.30
8.2.20.0000.00717.80
8.2.10.0040.00417.51
8.2.00.0040.00417.84
8.1.280.0070.00725.92
8.1.270.0050.00323.83
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0000.00922.38
8.1.230.0030.00921.08
8.1.220.0030.00617.74
8.1.210.0000.00818.77
8.1.200.0030.00617.25
8.1.190.0040.00417.10
8.1.180.0050.00318.10
8.1.170.0000.00818.46
8.1.160.0040.00418.71
8.1.150.0000.00720.28
8.1.140.0070.00017.49
8.1.130.0000.00618.95
8.1.120.0000.00817.21
8.1.110.0000.00717.22
8.1.100.0040.00717.28
8.1.90.0000.00817.22
8.1.80.0000.00717.39
8.1.70.0040.00417.24
8.1.60.0040.00417.35
8.1.50.0040.00417.32
8.1.40.0040.00417.32
8.1.30.0000.00817.48
8.1.20.0080.00017.50
8.1.10.0000.00917.38
8.1.00.0030.00517.36
8.0.300.0070.00019.88
8.0.290.0000.00916.63
8.0.280.0000.00718.36
8.0.270.0080.00017.18
8.0.260.0030.00318.31
8.0.250.0000.00716.82
8.0.240.0070.00016.84
8.0.230.0090.00016.73
8.0.220.0040.00416.75
8.0.210.0000.00716.70
8.0.200.0000.00816.81
8.0.190.0000.00816.82
8.0.180.0000.00716.74
8.0.170.0050.00316.79
8.0.160.0040.00416.73
8.0.150.0000.00716.59
8.0.140.0070.00016.70
8.0.130.0060.00013.15
8.0.120.0080.00016.64
8.0.110.0050.00216.72
8.0.100.0070.00016.88
8.0.90.0040.00416.56
8.0.80.0070.00716.65
8.0.70.0000.00816.61
8.0.60.0000.00816.62
8.0.50.0000.00716.82
8.0.30.0060.00916.89
8.0.20.0090.00917.40
8.0.10.0000.00716.70
8.0.00.0090.01116.67
7.4.330.0030.00315.55
7.4.320.0030.00316.50
7.4.300.0000.00716.36
7.4.290.0070.00016.36
7.4.280.0050.00316.25
7.4.270.0040.00416.51
7.4.260.0040.00416.34
7.4.250.0000.00716.38
7.4.240.0040.00416.30
7.4.230.0000.00716.47
7.4.220.0030.00316.37
7.4.210.0090.00616.40
7.4.200.0070.00016.56
7.4.160.0110.00716.43
7.4.140.0070.01217.86
7.4.130.0110.00816.23
7.4.120.0110.00816.28
7.4.110.0090.00816.30
7.4.100.0100.00816.37
7.4.90.0100.00716.11
7.4.80.0160.00319.39
7.4.70.0120.00316.50
7.4.60.0000.01616.12
7.4.50.0090.00216.34
7.4.40.0070.01416.16
7.4.00.0090.00614.55
7.3.330.0030.00312.93
7.3.320.0020.00212.97
7.3.310.0050.00216.09
7.3.300.0030.00316.11
7.3.290.0070.00016.13
7.3.280.0090.00716.14
7.3.260.0130.00716.32
7.3.240.0120.00616.18
7.3.230.0030.01416.38
7.3.210.0060.01016.09
7.3.200.0090.01216.45
7.3.190.0060.00916.36
7.3.180.0070.01516.45
7.3.170.0060.01216.23
7.3.160.0110.00516.11
7.2.330.0110.00716.61
7.2.320.0030.01416.39
7.2.310.0100.00716.54
7.2.300.0070.01716.20
7.2.290.0090.01316.29
7.2.60.0070.01316.62
7.2.30.0110.01617.48
7.2.20.0120.00817.52
7.2.10.0130.00817.58
7.2.00.0200.01117.69
7.1.200.0060.00515.78
7.1.150.0140.01016.43
7.1.140.0120.00916.52
7.1.130.0100.01116.53
7.1.120.0140.01516.60
7.1.110.0430.01216.10
7.1.100.0160.01115.88
7.1.90.0090.01116.02
7.1.80.0120.01315.90
7.1.70.0130.00615.20
7.1.60.0340.01533.31
7.1.50.0210.01832.85
7.1.40.0260.01232.59
7.1.30.0260.01332.51
7.1.20.0680.00932.66
7.1.10.0150.01314.68
7.1.00.0080.01014.59

preferences:
68.67 ms | 400 KiB | 5 Q