3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'This is a string'; echo substr($string, 0, -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)
8.3.60.0120.00616.75
8.3.50.0110.00821.83
8.3.40.0060.01218.57
8.3.30.0090.00618.52
8.3.20.0090.00920.30
8.3.10.0060.00323.66
8.3.00.0070.00317.63
8.2.180.0100.01018.16
8.2.170.0070.00722.96
8.2.160.0050.00820.52
8.2.150.0030.00524.18
8.2.140.0000.00824.66
8.2.130.0000.00726.16
8.2.120.0080.00017.50
8.2.110.0030.00620.94
8.2.100.0120.00018.04
8.2.90.0040.00419.08
8.2.80.0040.00417.97
8.2.70.0040.00417.50
8.2.60.0040.00417.93
8.2.50.0030.00518.07
8.2.40.0040.00421.01
8.2.30.0000.00720.63
8.2.20.0090.00017.67
8.2.10.0000.00717.98
8.2.00.0000.00718.00
8.1.280.0100.01025.92
8.1.270.0080.00824.01
8.1.260.0080.00026.35
8.1.250.0050.00328.09
8.1.240.0100.00019.11
8.1.230.0040.00717.66
8.1.220.0030.00517.74
8.1.210.0090.00018.77
8.1.200.0040.00417.23
8.1.190.0030.00617.23
8.1.180.0040.00418.10
8.1.170.0070.00018.91
8.1.160.0000.00722.03
8.1.150.0000.00718.82
8.1.140.0080.00019.55
8.1.130.0000.00717.54
8.1.120.0070.00017.33
8.1.110.0000.00817.42
8.1.100.0000.00717.40
8.1.90.0020.00517.29
8.1.80.0000.00717.34
8.1.70.0030.00517.39
8.1.60.0040.00417.54
8.1.50.0000.00817.46
8.1.40.0030.00517.36
8.1.30.0000.00817.63
8.1.20.0050.00317.52
8.1.10.0060.00317.44
8.1.00.0070.00017.30
8.0.300.0040.00418.77
8.0.290.0080.00016.63
8.0.280.0050.00318.45
8.0.270.0070.00017.30
8.0.260.0030.00317.27
8.0.250.0050.00316.91
8.0.240.0040.00416.80
8.0.230.0000.00716.77
8.0.220.0040.00416.81
8.0.210.0070.00016.83
8.0.200.0030.00316.83
8.0.190.0040.00416.93
8.0.180.0040.00416.83
8.0.170.0000.00716.79
8.0.160.0000.00716.83
8.0.150.0040.00416.76
8.0.140.0030.00316.84
8.0.130.0050.00013.27
8.0.120.0040.00416.75
8.0.110.0000.00716.86
8.0.100.0070.00016.68
8.0.90.0000.00716.89
8.0.80.0060.00916.83
8.0.70.0000.00716.86
8.0.60.0050.00316.71
8.0.50.0050.00316.85
8.0.30.0070.01317.01
8.0.20.0100.00717.40
8.0.10.0040.00416.85
8.0.00.0070.01116.71
7.4.330.0000.00515.08
7.4.320.0070.00016.38
7.4.300.0060.00016.44
7.4.290.0030.00316.33
7.4.280.0030.00316.41
7.4.270.0000.00716.55
7.4.260.0030.00316.44
7.4.250.0040.00316.41
7.4.240.0010.00616.56
7.4.230.0030.00316.55
7.4.220.0030.01416.38
7.4.210.0100.00316.49
7.4.200.0060.00316.35
7.4.160.0080.00816.32
7.4.150.0140.00317.40
7.4.140.0120.00717.86
7.4.130.0100.00916.48
7.4.120.0050.01216.45
7.4.110.0210.00616.48
7.4.100.0150.00616.41
7.4.90.0080.00816.41
7.4.80.0070.01419.39
7.4.70.0130.00716.31
7.4.60.0090.01016.57
7.4.50.0080.00016.34
7.4.40.0170.00616.32
7.4.30.0170.00616.48
7.4.00.0040.01114.84
7.3.330.0020.00213.04
7.3.320.0050.00012.94
7.3.310.0000.00716.01
7.3.300.0000.00616.13
7.3.290.0060.00916.11
7.3.280.0150.00416.14
7.3.270.0120.00917.40
7.3.260.0140.00416.25
7.3.250.0120.00516.28
7.3.240.0120.00716.46
7.3.230.0140.00416.39
7.3.210.0060.01116.19
7.3.200.0030.01316.25
7.3.190.0070.01316.22
7.3.180.0090.00616.15
7.3.170.0100.00616.27
7.3.160.0090.00616.45
7.2.330.0120.00616.65
7.2.320.0170.00016.36
7.2.310.0110.00516.37
7.2.300.0050.01116.33
7.2.290.0120.00916.33
7.2.60.0130.00016.52
7.2.00.0120.00319.14
7.1.200.0000.01315.82
7.1.100.0070.00717.88
7.1.70.0070.00716.95
7.1.60.0210.00319.11
7.1.50.0070.01016.82
7.1.00.0000.08022.37
7.0.200.0250.00416.85
7.0.60.0030.04019.85
7.0.50.0130.04317.77
7.0.40.0030.04720.04
7.0.30.0100.04720.00
7.0.20.0170.04020.17
7.0.10.0270.06720.20
7.0.00.0030.08020.16
5.6.280.0000.03721.09
5.6.210.0230.05320.70
5.6.200.0030.04018.22
5.6.190.0070.08713.66
5.6.180.0270.03320.56
5.6.170.0400.05320.47
5.6.160.0070.05020.47
5.6.150.0030.08018.11
5.6.140.0100.07718.15
5.6.130.0030.04018.14
5.6.120.0200.05320.89
5.6.110.0030.08321.02
5.6.100.0100.07720.84
5.6.90.0100.08721.01
5.6.80.0070.08020.50
5.6.70.0430.03320.37
5.5.350.0330.06320.40
5.5.340.0000.04718.02
5.5.330.0130.08320.20
5.5.320.0270.04020.41
5.5.310.0270.04320.26
5.5.300.0070.07717.92
5.5.290.0070.08017.90
5.5.280.0070.04020.84
5.5.270.0030.08720.78
5.5.260.0070.08320.71
5.5.250.0130.04720.61
5.5.240.0100.07720.18
5.4.450.0930.07319.47
5.4.440.0670.08319.24
5.4.430.0670.05319.39
5.4.420.0830.07719.64
5.4.410.0870.04719.18
5.4.400.0830.06019.12
5.4.390.0700.07319.29
5.4.380.0870.06719.29
5.4.370.0670.06719.15
5.4.360.0800.05019.30
5.4.350.0630.07319.08
5.4.340.0200.07718.79
5.4.320.0330.07319.09
5.4.310.0270.07019.29
5.4.300.0230.07018.77
5.4.290.0100.06719.07
5.4.280.0130.06719.11
5.4.270.0200.05719.07
5.4.260.0270.04719.14
5.4.250.0200.04318.93
5.4.240.0500.05018.91
5.4.230.0670.07019.22
5.4.220.0700.07318.93
5.4.210.0270.06019.29
5.4.200.0230.04719.14
5.4.190.0600.04719.13
5.4.180.0600.05719.29
5.4.170.0630.05319.11
5.4.160.0270.04319.13
5.4.150.0430.04319.12
5.4.140.0270.06016.41
5.4.130.0170.05316.42
5.4.120.0230.05016.32
5.4.110.0170.05716.52
5.4.100.0200.05316.44
5.4.90.0200.06716.29
5.4.80.0230.05316.42
5.4.70.0170.05716.17
5.4.60.0170.05016.54
5.4.50.0130.05016.19
5.4.40.0200.04716.44
5.4.30.0330.04316.46
5.4.20.0170.05716.50
5.4.10.0270.04716.50
5.4.00.0200.05315.84

preferences:
53.48 ms | 404 KiB | 6 Q