3v4l.org

run code in 300+ PHP versions simultaneously
<?php str_replace('a', 'b', 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)
8.3.120.0050.00520.71
8.3.110.0070.00020.94
8.3.100.0030.00616.61
8.3.90.0000.00826.77
8.3.80.0090.00019.36
8.3.70.0070.00718.31
8.3.60.0110.00416.88
8.3.50.0130.00524.38
8.3.40.0130.00318.84
8.3.30.0080.00618.60
8.3.20.0070.00024.18
8.3.10.0040.00424.66
8.3.00.0060.00326.16
8.2.240.0110.01117.05
8.2.230.0030.00622.58
8.2.220.0030.00624.06
8.2.210.0120.00626.77
8.2.200.0040.00418.88
8.2.190.0150.00018.29
8.2.180.0140.00725.92
8.2.170.0140.00718.79
8.2.160.0140.00022.96
8.2.150.0080.00025.66
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0050.00326.35
8.2.110.0070.01022.25
8.2.100.0100.00017.78
8.2.90.0050.00317.84
8.2.80.0030.00617.97
8.2.70.0040.00417.47
8.2.60.0060.00317.80
8.2.50.0060.00318.05
8.2.40.0060.00318.22
8.2.30.0040.00418.03
8.2.20.0000.00717.92
8.2.10.0040.00419.12
8.2.00.0080.00019.13
8.1.300.0060.00315.97
8.1.290.0090.00030.84
8.1.280.0040.01125.92
8.1.270.0070.00023.99
8.1.260.0040.00428.09
8.1.250.0040.00428.09
8.1.240.0050.00523.84
8.1.230.0070.00423.89
8.1.220.0050.00320.96
8.1.210.0060.00618.77
8.1.200.0030.00617.23
8.1.190.0030.00617.23
8.1.180.0050.00318.10
8.1.170.0000.01018.56
8.1.160.0000.00718.66
8.1.150.0050.00218.75
8.1.140.0040.00420.55
8.1.130.0070.00017.32
8.1.120.0070.00317.35
8.1.110.0000.00717.20
8.1.100.0020.00517.28
8.1.90.0040.00417.32
8.1.80.0000.00717.34
8.1.70.0030.00317.34
8.1.60.0000.00717.44
8.1.50.0040.00417.41
8.1.40.0040.00417.28
8.1.30.0040.00417.47
8.1.20.0060.00217.50
8.1.10.0100.00517.25
8.1.00.0120.00417.23
8.0.300.0040.00422.00
8.0.290.0040.00416.63
8.0.280.0030.00318.30
8.0.270.0030.00317.98
8.0.260.0040.00416.59
8.0.250.0040.00416.81
8.0.240.0030.00316.71
8.0.230.0000.00816.85
8.0.220.0030.00316.63
8.0.210.0030.00316.73
8.0.200.0000.00716.70
8.0.190.0000.00816.81
8.0.180.0070.00016.71
8.0.170.0000.00816.63
8.0.160.0050.00216.70
8.0.150.0100.00616.63
8.0.140.0080.00716.69
8.0.130.0100.00314.92
8.0.120.0050.01016.71
8.0.110.0050.00916.71
8.0.100.0090.00516.63
8.0.90.0100.00416.69
8.0.80.0100.00916.72
8.0.70.0130.00316.69
8.0.60.0130.00516.61
8.0.50.0140.00516.74
8.0.30.0120.01016.75
8.0.20.0140.00516.78
8.0.10.0130.00616.82
8.0.00.0090.00816.78
7.4.330.0050.00015.55
7.4.320.0030.00316.51
7.4.300.0030.00316.50
7.4.290.0080.00016.33
7.4.280.0020.00516.26
7.4.270.0120.00216.35
7.4.260.0080.00614.74
7.4.250.0100.00516.29
7.4.240.0080.00216.11
7.4.230.0020.00816.28
7.4.220.0100.00216.36
7.4.210.0110.00716.44
7.4.200.0100.00716.33
7.4.190.0160.00216.41
7.4.180.0150.00516.40
7.4.160.0100.00716.33
7.4.150.0160.00316.16
7.4.140.0130.00716.11
7.4.130.0070.00916.18
7.4.120.0060.01016.21
7.4.110.0080.00916.09
7.4.100.0070.00716.29
7.4.90.0120.00516.28
7.4.80.0090.00616.10
7.4.70.0090.00516.28
7.4.60.0070.00716.21
7.4.50.0070.00816.26
7.4.40.0070.00716.25
7.4.30.0060.00916.18
7.4.20.0090.00516.28
7.4.10.0110.00216.18
7.4.00.0070.00616.29
7.3.330.0080.00615.99
7.3.320.0070.00614.56
7.3.310.0080.00516.08
7.3.300.0110.00215.98
7.3.290.0130.00516.08
7.3.280.0100.00816.06
7.3.270.0110.00716.11
7.3.260.0150.00616.10
7.3.250.0120.00616.12
7.3.240.0090.00815.99
7.3.230.0090.00816.07
7.3.220.0150.00316.03
7.3.210.0130.00516.05
7.3.200.0090.00816.00
7.3.190.0120.00716.02
7.3.180.0120.00516.08
7.3.170.0130.00516.04
7.3.160.0150.00516.19
7.3.150.0080.01016.07
7.3.140.0110.00716.13
7.3.130.0100.00816.14
7.3.120.0140.00516.16
7.3.110.0110.00716.05
7.3.100.0140.00616.11
7.3.90.0130.00516.34
7.3.80.0110.00616.08
7.3.70.0100.00616.20
7.3.60.0110.00616.27
7.3.50.0150.00216.17
7.3.40.0110.00716.19
7.3.30.0110.00816.13
7.3.20.0150.00616.77
7.3.10.0130.00616.74
7.3.00.0140.00516.75

preferences:
28.7 ms | 403 KiB | 5 Q