3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'abcdef'; $lastPos = mb_strripos($str, 'd'); var_dump($lastPos); var_dump(substr($str, 0, $lastPos));

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)
8.3.70.0100.01318.18
8.3.60.0130.00716.63
8.3.50.0050.01121.92
8.3.40.0140.00418.59
8.3.30.0100.00318.54
8.3.20.0040.00418.90
8.3.10.0040.00421.62
8.3.00.0000.00819.54
8.2.190.0100.01016.58
8.2.180.0120.00916.38
8.2.170.0090.00922.96
8.2.160.0110.00422.25
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0030.00617.79
8.2.120.0070.00026.35
8.2.110.0060.00322.16
8.2.100.0060.00618.04
8.2.90.0040.00419.09
8.2.80.0080.00017.97
8.2.70.0000.00817.50
8.2.60.0100.00017.68
8.2.50.0030.00618.07
8.2.40.0080.00022.28
8.2.30.0030.00320.68
8.2.20.0040.00417.49
8.2.10.0020.00517.92
8.2.00.0040.00417.93
8.1.280.0100.00325.92
8.1.270.0000.00823.96
8.1.260.0040.00428.09
8.1.250.0070.00028.09
8.1.240.0040.00423.85
8.1.230.0040.00717.89
8.1.220.0050.00317.74
8.1.210.0000.00918.77
8.1.200.0080.00017.23
8.1.190.0080.00017.10
8.1.180.0040.00418.10
8.1.170.0040.00418.56
8.1.160.0000.00720.67
8.1.150.0000.00718.84
8.1.140.0080.00319.64
8.1.130.0020.00517.69
8.1.120.0040.00417.48
8.1.110.0040.00417.47
8.1.100.0040.00417.36
8.1.90.0050.00317.43
8.1.80.0000.00717.41
8.1.70.0030.00317.47
8.1.60.0050.00517.63
8.1.50.0000.00817.52
8.1.40.0040.00417.49
8.1.30.0000.00817.68
8.1.20.0040.00417.56
8.1.10.0050.00217.45
8.1.00.0050.00217.45
8.0.300.0000.00718.77
8.0.290.0040.00416.58
8.0.280.0030.00318.46
8.0.270.0030.00317.27
8.0.260.0040.00417.25
8.0.250.0000.00716.83
8.0.240.0040.00416.95
8.0.230.0000.00716.88
8.0.220.0000.00716.89
8.0.210.0000.00816.89
8.0.200.0000.00616.92
8.0.190.0080.00016.91
8.0.180.0070.00016.90
8.0.170.0040.00416.91
8.0.160.0000.00816.85
8.0.150.0050.00516.80
8.0.140.0030.00316.87
8.0.130.0030.00313.30
8.0.120.0030.00616.83
8.0.110.0050.00316.89
8.0.100.0040.00416.92
8.0.90.0000.00716.83
8.0.80.0120.00416.91
8.0.70.0040.00416.75
8.0.60.0040.00416.89
8.0.50.0040.00416.91
8.0.30.0110.00616.97
8.0.20.0100.00817.40
8.0.10.0050.00316.79
8.0.00.0100.01016.90
7.4.330.0020.00215.08
7.4.320.0000.00616.52
7.4.300.0030.00316.59
7.4.290.0000.00716.50
7.4.280.0000.00716.61
7.4.270.0030.00316.60
7.4.260.0030.00316.44
7.4.250.0050.00216.49
7.4.240.0030.00316.52
7.4.230.0040.00416.70
7.4.220.0070.01016.59
7.4.210.0050.00916.49
7.4.200.0030.00316.38
7.4.160.0060.00916.32
7.4.150.0130.00417.40
7.4.140.0090.00817.86
7.4.130.0130.00516.44
7.4.120.0130.00716.44
7.4.110.0070.01016.66
7.4.100.0100.00716.48
7.4.90.0080.00816.35
7.4.80.0080.00919.39
7.4.70.0190.00416.41
7.4.60.0070.01016.42
7.4.50.0070.01016.46
7.4.40.0120.00416.30
7.4.30.0110.00716.51
7.4.00.0030.01214.97
7.3.330.0030.00313.00
7.3.320.0000.00513.14
7.3.310.0040.00416.18
7.3.300.0040.00416.24
7.3.290.0030.00316.22
7.3.280.0090.00716.27
7.3.270.0160.00817.40
7.3.260.0140.00816.32
7.3.250.0090.01116.20
7.3.240.0100.01116.30
7.3.230.0070.01616.39
7.3.210.0130.00316.18
7.3.200.0030.01516.12
7.3.190.0030.01516.41
7.3.180.0100.00716.14
7.3.170.0110.01016.31
7.3.160.0080.00816.47
7.2.330.0040.01416.27
7.2.320.0060.01316.34
7.2.310.0190.00316.59
7.2.300.0080.01116.61
7.2.290.0090.00916.25
7.2.60.0100.00317.04
7.2.00.0040.00819.18
7.1.200.0090.00315.58
7.1.100.0030.00817.88
7.1.70.0030.00517.20
7.1.60.0130.01019.85
7.1.50.0070.01116.55
7.1.00.0030.07722.33
7.0.200.0030.00616.78
7.0.60.0100.06019.83
7.0.50.0230.05020.45
7.0.40.0330.04020.48
7.0.30.0130.08720.41
7.0.20.0130.06320.26
7.0.10.0200.05720.24
7.0.00.0130.06020.19
5.6.280.0030.07321.09
5.6.210.0170.06020.59
5.6.200.0230.05321.01
5.6.190.0370.03721.20
5.6.180.0200.06021.05
5.6.170.0230.05321.11
5.6.160.0130.05321.21
5.6.150.0130.05321.05
5.6.140.0400.05321.04
5.6.130.0370.05321.15
5.6.120.0100.06321.03
5.6.110.0130.06720.94
5.6.100.0330.06020.94
5.6.90.0430.05321.05
5.6.80.0230.04320.55
5.6.70.0400.05320.42
5.6.60.0400.05020.41
5.6.50.0400.06020.44
5.6.40.0430.05020.37
5.6.30.0370.05720.43
5.6.20.0470.04720.46
5.6.10.0370.06020.31
5.6.00.0400.05320.32
5.5.350.0130.06320.37
5.5.340.0170.05720.82
5.5.330.0270.04321.02
5.5.320.0200.05320.96
5.5.310.0230.05320.82
5.5.300.0470.04720.83
5.5.290.0400.05720.82
5.5.280.0170.05320.86
5.5.270.0330.06020.86
5.5.260.0370.05720.75
5.5.250.0070.06020.70
5.5.240.0300.05320.15
5.5.230.0430.05020.32
5.5.220.0430.05020.39
5.5.210.0330.05720.16
5.5.200.0470.04720.22
5.5.190.0600.07020.19
5.5.180.0430.05320.09
5.5.160.0470.04720.34
5.5.150.0270.05720.26
5.5.140.0470.04320.13
5.5.130.0370.05320.08
5.5.120.0370.05720.21
5.5.110.0430.04720.14
5.5.100.0400.05020.25
5.5.90.0470.05720.10
5.5.80.0300.06020.10
5.5.70.0400.05320.25
5.5.60.0370.05320.05
5.5.50.0370.05320.08
5.5.40.0430.06320.16
5.5.30.0330.05720.02
5.5.20.0430.05019.98
5.5.10.0430.05019.96
5.5.00.0370.05320.23

preferences:
22.26 ms | 401 KiB | 5 Q