3v4l.org

run code in 300+ PHP versions simultaneously
<?php $mystring = 'vabcbsa'; echo Substr("abcdef", 0, -1*strrpos($mystring, "b"));

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)
8.3.40.0110.00418.63
8.3.30.0100.00318.96
8.3.20.0080.00020.08
8.3.10.0040.00423.51
8.3.00.0070.00020.55
8.2.170.0070.00722.96
8.2.160.0140.00722.25
8.2.150.0000.00824.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0070.00022.25
8.2.110.0060.00322.14
8.2.100.0060.00617.84
8.2.90.0070.00019.22
8.2.80.0080.00017.97
8.2.70.0090.00017.60
8.2.60.0050.00317.80
8.2.50.0060.00318.07
8.2.40.0040.00419.09
8.2.30.0050.00317.93
8.2.20.0000.00717.70
8.2.10.0030.00519.51
8.2.00.0000.00717.54
8.1.270.0040.00423.88
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00623.96
8.1.230.0060.00619.16
8.1.220.0040.00417.79
8.1.210.0030.00518.77
8.1.200.0060.00316.98
8.1.190.0000.00817.53
8.1.180.0030.00618.10
8.1.170.0080.00018.40
8.1.160.0040.00421.95
8.1.150.0050.00318.56
8.1.140.0000.00817.37
8.1.130.0070.00017.84
8.1.120.0020.00517.41
8.1.110.0070.00017.26
8.1.100.0040.00417.36
8.1.90.0020.00517.46
8.1.80.0000.00717.37
8.1.70.0030.00317.32
8.1.60.0060.00317.54
8.1.50.0080.00017.34
8.1.40.0000.00717.39
8.1.30.0030.00517.52
8.1.20.0040.00417.44
8.1.10.0040.00417.39
8.1.00.0030.00617.29
8.0.300.0040.00418.77
8.0.290.0050.00317.05
8.0.280.0000.00718.50
8.0.270.0030.00317.24
8.0.260.0040.00416.71
8.0.250.0030.00316.95
8.0.240.0070.00316.93
8.0.230.0000.00716.78
8.0.220.0070.00016.80
8.0.210.0000.00716.77
8.0.200.0040.00416.73
8.0.190.0030.00316.88
8.0.180.0070.00016.82
8.0.170.0000.00916.84
8.0.160.0000.00816.88
8.0.150.0000.00716.80
8.0.140.0040.00416.77
8.0.130.0030.00313.20
8.0.120.0000.00816.83
8.0.110.0000.00816.70
8.0.100.0000.00716.66
8.0.90.0030.00516.71
8.0.80.0000.01716.84
8.0.70.0070.00016.80
8.0.60.0070.00016.87
8.0.50.0000.00816.71
8.0.30.0080.01016.92
8.0.20.0090.01117.40
8.0.10.0040.00416.89
8.0.00.0090.00716.74
7.4.330.0000.00615.14
7.4.320.0030.00316.42
7.4.300.0000.00616.38
7.4.290.0030.00316.56
7.4.280.0000.00716.33
7.4.270.0000.00616.50
7.4.260.0000.00716.53
7.4.250.0040.00416.39
7.4.240.0040.00416.50
7.4.230.0030.00316.52
7.4.220.0030.01316.38
7.4.210.0100.00516.53
7.4.200.0030.00316.22
7.4.190.0020.00516.46
7.4.160.0090.00616.41
7.4.150.0120.00617.40
7.4.140.0090.00817.86
7.4.130.0120.00716.41
7.4.120.0070.01016.55
7.4.110.0130.00316.39
7.4.100.0100.01316.28
7.4.90.0100.01016.46
7.4.80.0030.01316.18
7.4.70.0070.01016.40
7.4.60.0090.01216.32
7.4.50.0000.00716.22
7.4.40.0030.00922.77
7.4.30.0030.01616.50
7.4.00.0090.00614.77
7.3.330.0000.00613.02
7.3.320.0000.00513.04
7.3.310.0040.00416.04
7.3.300.0000.00716.08
7.3.290.0090.00616.23
7.3.280.0060.01216.20
7.3.270.0090.00617.40
7.3.260.0120.00616.29
7.3.250.0120.00416.36
7.3.240.0100.00716.18
7.3.230.0030.01316.39
7.3.210.0070.01016.21
7.3.200.0030.01419.39
7.3.190.0110.00616.09
7.3.180.0060.00916.38
7.3.170.0040.01216.27
7.3.160.0070.00716.25
7.3.120.0070.00714.79
7.2.330.0100.00716.63
7.2.320.0100.00716.22
7.2.310.0070.01016.69
7.2.300.0070.01116.55
7.2.290.0060.01016.42
7.2.60.0040.01116.61
7.2.00.0030.01019.30
7.1.200.0080.00615.79
7.1.100.0000.01118.13
7.1.70.0000.00916.95
7.1.60.0030.01719.27
7.1.50.0150.00716.88
7.1.00.0030.07322.31
7.0.200.0110.00516.72
7.0.140.0030.07021.96
7.0.100.0470.08319.99
7.0.90.0430.08019.85
7.0.80.0570.07719.85
7.0.70.0300.05019.89
7.0.60.0530.04019.86
7.0.50.0530.06720.34
7.0.40.0130.07720.06
7.0.30.0030.09020.11
7.0.20.0030.07320.14
7.0.10.0130.08320.00
7.0.00.0070.08320.14
5.6.280.0000.07320.81
5.6.250.0100.08020.81
5.6.240.0070.08320.56
5.6.230.0070.04020.56
5.6.220.0100.07720.62
5.6.210.0100.07720.57
5.6.200.0100.07020.96
5.6.190.0030.09021.04
5.6.180.0030.06321.05
5.6.170.0100.07320.98
5.6.160.0170.07321.17
5.6.150.0130.07321.09
5.6.140.0000.08020.98
5.6.130.0170.07321.05
5.6.120.0130.06021.04
5.6.110.0130.08320.93
5.6.100.0070.08020.97
5.6.90.0170.07721.11
5.6.80.0030.08320.41
5.6.70.0100.07720.45
5.6.60.0100.08020.47
5.6.50.0130.07720.40
5.6.40.0030.08320.48
5.6.30.0100.07320.37
5.6.20.0070.07320.30
5.6.10.0130.07020.38
5.6.00.0170.07320.40
5.5.380.0130.07320.51
5.5.370.0070.08320.49
5.5.360.0100.08020.43
5.5.350.0070.07720.46
5.5.340.0030.08320.91
5.5.330.0100.06720.89
5.5.320.0170.06720.83
5.5.310.0230.07020.86
5.5.300.0130.07320.91
5.5.290.0030.08720.80
5.5.280.0030.05320.87
5.5.270.0000.07720.76
5.5.260.0100.05720.82
5.5.250.0170.04020.54
5.5.240.0100.06320.24
5.5.230.0130.07020.22
5.5.220.0130.07020.30
5.5.210.0130.07020.17
5.5.200.0070.08020.18
5.5.190.0070.05020.16
5.5.180.0070.06020.23
5.5.160.0030.08720.25
5.5.150.0030.08320.27
5.5.140.0070.07320.18
5.5.130.0070.08020.21
5.5.120.0070.05020.18
5.5.110.0200.06719.98
5.5.100.0030.08319.93
5.5.90.0130.07020.12
5.5.80.0030.08020.14
5.5.70.0100.07020.11
5.5.60.0070.07719.93
5.5.50.0130.06020.08
5.5.40.0170.06720.02
5.5.30.0030.08020.07
5.5.20.0070.07720.14
5.5.10.0070.05020.05
5.5.00.0170.06719.95
5.4.450.0100.07319.45
5.4.440.0170.06719.31
5.4.430.0100.07319.29
5.4.420.0100.07719.42
5.4.410.0030.04719.10
5.4.400.0000.08018.79
5.4.390.0000.07319.10
5.4.380.0070.05019.13
5.4.370.0130.04019.12
5.4.360.0070.07319.04
5.4.350.0130.05019.03
5.4.340.0070.07718.98
5.4.320.0070.06319.03
5.4.310.0170.06718.81
5.4.300.0100.07319.04
5.4.290.0100.07319.12
5.4.280.0070.07719.16
5.4.270.0130.07319.02
5.4.260.0070.05019.03
5.4.250.0070.07319.02
5.4.240.0070.07319.14
5.4.230.0070.04319.02
5.4.220.0000.08319.03
5.4.210.0070.07319.02
5.4.200.0070.07718.89
5.4.190.0030.07319.02
5.4.180.0100.06719.05
5.4.170.0100.07018.97
5.4.160.0070.07318.88
5.4.150.0100.07018.79
5.4.140.0030.07716.35
5.4.130.0100.06316.27
5.4.120.0100.06716.29
5.4.110.0070.09016.43
5.4.100.0030.07716.41
5.4.90.0030.06016.30
5.4.80.0030.05316.20
5.4.70.0100.06016.35
5.4.60.0000.07716.50
5.4.50.0030.07016.38
5.4.40.0070.04716.48
5.4.30.0070.07016.18
5.4.20.0000.05016.20
5.4.10.0070.07016.38
5.4.00.0000.05715.72
5.3.290.0100.07014.48
5.3.280.0000.08314.57
5.3.270.0100.07014.55
5.3.260.0030.07714.56
5.3.250.0070.07714.45
5.3.240.0000.10714.57
5.3.230.0030.05714.55
5.3.220.0030.08014.42
5.3.210.0030.08714.52
5.3.200.0070.04014.47
5.3.190.0070.07714.48
5.3.180.0100.07314.56
5.3.170.0000.07014.55
5.3.160.0000.08014.55
5.3.150.0130.07314.56
5.3.140.0070.04314.41
5.3.130.0070.05314.54
5.3.120.0030.08014.41
5.3.110.0070.07314.52
5.3.100.0070.07714.03
5.3.90.0130.07013.95
5.3.80.0030.08014.01
5.3.70.0030.07713.99
5.3.60.0170.07713.99
5.3.50.0030.06713.72
5.3.40.0070.07313.93
5.3.30.0100.06313.76
5.3.20.0100.06713.44
5.3.10.0000.04313.41
5.3.00.0170.05713.63
5.2.170.0070.06011.11
5.2.160.0070.06311.01
5.2.150.0000.06711.19
5.2.140.0030.06311.19
5.2.130.0070.04711.02
5.2.120.0030.03311.12
5.2.110.0130.05710.96
5.2.100.0030.05711.09
5.2.90.0070.05011.14
5.2.80.0130.04711.04
5.2.70.0000.04711.10
5.2.60.0030.05310.91
5.2.50.0070.03010.81
5.2.40.0100.02311.01
5.2.30.0030.03010.92
5.2.20.0000.03010.91
5.2.10.0000.02710.94
5.2.00.0100.02010.77
5.1.60.0000.02710.55
5.1.50.0030.02310.55
5.1.40.0000.02710.55
5.1.30.0000.02710.55
5.1.20.0070.02710.55
5.1.10.0070.02310.55
5.1.00.0030.02310.55
5.0.50.0000.02710.55
5.0.40.0070.04010.55
5.0.30.0070.04310.55
5.0.20.0000.03310.55
5.0.10.0000.03010.55
5.0.00.0000.04710.55
4.4.90.0030.02310.55
4.4.80.0000.03010.55
4.4.70.0000.01710.55
4.4.60.0070.02010.55
4.4.50.0000.02710.55
4.4.40.0030.02010.55
4.4.30.0030.01310.55
4.4.20.0070.02010.55
4.4.10.0000.02710.55
4.4.00.0070.04710.55
4.3.110.0070.02710.55
4.3.100.0000.02310.55
4.3.90.0030.03310.55
4.3.80.0070.03010.55
4.3.70.0030.02310.55
4.3.60.0030.02710.55
4.3.50.0030.02010.55
4.3.40.0030.03010.55
4.3.30.0030.02710.55
4.3.20.0000.01310.55
4.3.10.0000.03710.55
4.3.00.0000.01310.55

preferences:
38.92 ms | 400 KiB | 5 Q