3v4l.org

run code in 300+ PHP versions simultaneously
<?php $test = 'blabla'; echo substr($test, -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)
8.3.60.0120.00318.00
8.3.50.0090.00922.02
8.3.40.0100.00718.79
8.3.30.0070.01118.97
8.3.20.0090.00020.16
8.3.10.0040.01122.09
8.3.00.0080.00022.45
8.2.180.0090.00616.38
8.2.170.0090.00922.96
8.2.160.0040.01420.97
8.2.150.0000.00824.18
8.2.140.0030.00724.66
8.2.130.0040.00426.16
8.2.120.0040.00717.50
8.2.110.0030.00621.88
8.2.100.0060.00619.57
8.2.90.0080.00019.14
8.2.80.0000.00917.97
8.2.70.0050.00317.50
8.2.60.0070.00418.05
8.2.50.0000.00818.07
8.2.40.0060.00318.09
8.2.30.0050.00318.15
8.2.20.0000.00817.52
8.2.10.0040.00417.60
8.2.00.0000.00817.48
8.1.280.0100.01025.92
8.1.270.0080.00022.19
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0050.00323.77
8.1.230.0110.00019.15
8.1.220.0000.00817.74
8.1.210.0030.00518.77
8.1.200.0100.00017.22
8.1.190.0070.00017.43
8.1.180.0000.00718.61
8.1.170.0080.00018.63
8.1.160.0050.00321.93
8.1.150.0000.00718.47
8.1.140.0040.00417.37
8.1.130.0000.00717.70
8.1.120.0000.00717.27
8.1.110.0030.00317.32
8.1.100.0000.00717.27
8.1.90.0050.00217.41
8.1.80.0050.00217.36
8.1.70.0020.00517.27
8.1.60.0060.00317.40
8.1.50.0040.00417.39
8.1.40.0070.00017.47
8.1.30.0050.00317.54
8.1.20.0000.00817.50
8.1.10.0000.00717.46
8.1.00.0070.00017.44
8.0.300.0070.00018.77
8.0.290.0070.00017.18
8.0.280.0000.00718.37
8.0.270.0000.00817.14
8.0.260.0030.00316.81
8.0.250.0050.00517.01
8.0.240.0030.00316.99
8.0.230.0030.00316.70
8.0.220.0000.00816.75
8.0.210.0080.00016.84
8.0.200.0030.00616.83
8.0.190.0050.00316.89
8.0.180.0000.00716.89
8.0.170.0000.00716.75
8.0.160.0000.00716.78
8.0.150.0040.00416.74
8.0.140.0040.00416.66
8.0.130.0000.00613.25
8.0.120.0040.00416.75
8.0.110.0030.00516.71
8.0.100.0080.00016.88
8.0.90.0040.00416.81
8.0.80.0060.01016.82
8.0.70.0020.00516.84
8.0.60.0040.00416.72
8.0.50.0030.00316.71
8.0.30.0090.01117.05
8.0.20.0080.01017.40
8.0.10.0050.00217.00
8.0.00.0120.00516.83
7.4.330.0000.00515.14
7.4.320.0000.00716.53
7.4.300.0000.00716.54
7.4.290.0000.00816.53
7.4.280.0050.00216.32
7.4.270.0050.00216.45
7.4.260.0000.00816.55
7.4.250.0050.00316.26
7.4.240.0030.00416.48
7.4.230.0040.00416.40
7.4.220.0140.00316.48
7.4.210.0070.00816.48
7.4.200.0020.00516.55
7.4.190.0040.00416.47
7.4.160.0070.01016.46
7.4.150.0170.00017.40
7.4.140.0130.00617.86
7.4.130.0090.00916.43
7.4.120.0080.00816.40
7.4.110.0030.01416.54
7.4.100.0180.00416.38
7.4.90.0180.00016.31
7.4.80.0160.00919.39
7.4.70.0080.01116.29
7.4.60.0060.01016.29
7.4.50.0040.00416.47
7.4.40.0070.00722.77
7.4.30.0140.00316.41
7.4.00.0000.01514.91
7.3.330.0040.00312.93
7.3.320.0000.00512.86
7.3.310.0040.00416.17
7.3.300.0000.00616.06
7.3.290.0090.00616.16
7.3.280.0060.01016.11
7.3.270.0120.00417.40
7.3.260.0110.00716.53
7.3.250.0100.00716.47
7.3.240.0130.01016.20
7.3.230.0110.00716.39
7.3.210.0150.00316.20
7.3.200.0130.01019.39
7.3.190.0030.01416.43
7.3.180.0080.00816.47
7.3.170.0110.00516.42
7.3.160.0090.00616.28
7.3.120.0090.00614.81
7.2.330.0090.00916.40
7.2.320.0140.00316.37
7.2.310.0140.00316.50
7.2.300.0060.01216.48
7.2.290.0130.00316.50
7.2.60.0030.01316.42
7.2.00.0070.01019.14
7.1.200.0040.00815.74
7.1.100.0000.01118.17
7.1.70.0000.00816.97
7.1.60.0070.01719.82
7.1.50.0260.01034.59
7.1.00.0100.07022.46
7.0.200.0070.00716.77
7.0.140.0070.07022.09
7.0.60.0170.05319.92
7.0.50.0170.06717.80
7.0.40.0130.04320.34
7.0.30.0230.09020.01
7.0.20.0170.04019.99
7.0.10.0230.04320.01
7.0.00.0170.08020.32
5.6.280.0030.07320.98
5.6.210.0170.06020.65
5.6.200.0200.05018.08
5.6.190.0070.08320.63
5.6.180.0200.04320.59
5.6.170.0170.04020.46
5.6.160.0000.05020.52
5.6.150.0030.04018.19
5.6.140.0100.03318.21
5.6.130.0070.08718.15
5.6.120.0100.08720.97
5.6.110.0130.08021.11
5.6.100.0100.08020.99
5.6.90.0100.08021.00
5.6.80.0070.08320.38
5.5.350.0100.05020.51
5.5.340.0070.08018.02
5.5.330.0070.08020.23
5.5.320.0030.05720.57
5.5.310.0230.07720.29
5.5.300.0070.06317.91
5.5.290.0070.08018.01
5.5.280.0100.07020.87
5.5.270.0130.07320.63
5.5.260.0170.06720.71
5.5.250.0070.04020.68
5.5.240.0100.07720.03
5.4.450.0600.05719.52
5.4.440.1000.06719.11
5.4.430.0670.05719.41
5.4.420.1000.06719.13
5.4.410.0930.04719.00
5.4.400.0800.04718.95
5.4.390.0800.04319.18
5.4.380.0170.05718.77
5.4.370.0070.04018.64
5.4.360.0170.03318.68
5.4.350.0100.03411.97
5.4.340.0090.04011.96
5.4.320.0090.03712.45
5.4.310.0050.03712.45
5.4.300.0070.03612.45
5.4.290.0090.04512.45
5.4.280.0070.03612.35
5.4.270.0070.04412.34
5.4.260.0070.07718.79
5.4.250.0200.05718.86
5.4.240.0130.06718.71
5.4.230.0070.05318.71
5.4.220.0000.07318.89
5.4.210.0030.05718.89
5.4.200.0000.05718.88
5.4.190.0130.05018.72
5.4.180.0070.05718.98
5.4.170.0200.04018.73
5.4.160.0070.05719.00
5.4.150.0000.06718.82
5.4.140.0000.05716.27
5.4.130.0130.06316.45
5.4.120.0170.05016.41
5.4.110.0070.05316.30
5.4.100.0100.06716.48
5.4.90.0070.05016.48
5.4.80.0100.07316.42
5.4.70.0070.05716.27
5.4.60.0170.04016.31
5.4.50.0070.06316.31
5.4.40.0100.04716.50
5.4.30.0070.05016.46
5.4.20.0100.04716.31
5.4.10.0100.05016.48
5.4.00.0170.03715.76
5.3.290.0050.03912.80
5.3.280.0100.04714.74
5.3.270.0170.04314.37
5.3.260.0070.06014.61
5.3.250.0130.04314.47
5.3.240.0100.05014.48
5.3.230.0170.04014.48
5.3.220.0070.07014.62
5.3.210.0100.05314.57
5.3.200.0030.05314.26
5.3.190.0070.05714.71
5.3.180.0100.04714.59
5.3.170.0100.07014.57
5.3.160.0030.05314.71
5.3.150.0030.05314.57
5.3.140.0130.06714.44
5.3.130.0070.07714.31
5.3.120.0100.04714.69
5.3.110.0170.06714.41
5.3.100.0070.06313.80
5.3.90.0100.05013.86
5.3.80.0100.06013.88
5.3.70.0000.05713.79
5.3.60.0030.05313.83
5.3.50.0030.06014.04
5.3.40.0030.05713.88
5.3.30.0030.05013.60
5.3.20.0130.06313.62
5.3.10.0130.04313.58
5.3.00.0030.05713.50
5.2.170.0000.04311.02
5.2.160.0000.04311.04
5.2.150.0070.03710.97
5.2.140.0170.04711.28
5.2.130.0200.04011.02
5.2.120.0070.05711.03
5.2.110.0100.05311.02
5.2.100.0030.04311.25
5.2.90.0070.04011.24
5.2.80.0200.04310.97
5.2.70.0170.04710.97
5.2.60.0030.06311.05
5.2.50.0030.05311.17
5.2.40.0030.04010.93
5.2.30.0070.05311.06
5.2.20.0030.04310.87
5.2.10.0130.04710.76
5.2.00.0070.04010.63
5.1.60.0030.0509.92
5.1.50.0100.03010.04
5.1.40.0100.04010.00
5.1.30.0070.03310.48
5.1.20.0100.03310.42
5.1.10.0030.04310.21
5.1.00.0030.04010.30
5.0.50.0030.0408.46
5.0.40.0000.0308.36
5.0.30.0070.0378.45
5.0.20.0000.0308.42
5.0.10.0100.0378.35
5.0.00.0070.0438.34
4.4.90.0000.0236.74
4.4.80.0030.0206.74
4.4.70.0030.0206.90
4.4.60.0000.0336.90
4.4.50.0030.0276.90
4.4.40.0000.0336.90
4.4.30.0070.0276.90
4.4.20.0030.0206.90
4.4.10.0030.0336.90
4.4.00.0000.0376.90
4.3.110.0030.0336.90
4.3.100.0070.0176.90
4.3.90.0070.0206.90
4.3.80.0070.0306.90
4.3.70.0030.0276.90
4.3.60.0070.0176.90
4.3.50.0070.0276.90
4.3.40.0030.0476.90
4.3.30.0000.0236.90
4.3.20.0000.0236.90
4.3.10.0000.0276.90
4.3.00.0130.0237.30

preferences:
49.2 ms | 400 KiB | 5 Q