3v4l.org

run code in 300+ PHP versions simultaneously
<?php $test='12345'; echo substr($test,-1,1); echo $test;

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)
8.3.40.0110.00818.70
8.3.30.0070.00719.04
8.3.20.0030.01220.11
8.3.10.0090.00923.64
8.3.00.0130.00019.38
8.2.170.0110.00322.96
8.2.160.0130.00620.39
8.2.150.0060.01324.18
8.2.140.0030.00624.66
8.2.130.0070.01426.16
8.2.120.0080.00022.19
8.2.110.0040.00422.08
8.2.100.0080.00317.72
8.2.90.0080.00017.75
8.2.80.0000.00918.69
8.2.70.0100.00017.50
8.2.60.0040.00418.04
8.2.50.0000.01218.07
8.2.40.0030.00619.94
8.2.30.0000.00718.00
8.2.20.0000.01017.74
8.2.10.0080.00018.05
8.2.00.0050.00317.68
8.1.270.0070.00724.02
8.1.260.0080.01126.35
8.1.250.0070.01028.09
8.1.240.0060.00320.71
8.1.230.0000.01017.95
8.1.220.0040.00417.74
8.1.210.0030.00618.77
8.1.200.0050.00517.35
8.1.190.0000.00817.00
8.1.180.0040.00418.10
8.1.170.0040.00418.54
8.1.160.0000.00818.80
8.1.150.0000.00718.61
8.1.140.0070.00017.32
8.1.130.0000.00717.82
8.1.120.0030.00317.28
8.1.110.0060.00317.44
8.1.100.0030.00617.41
8.1.90.0050.00217.41
8.1.80.0080.00017.27
8.1.70.0030.00517.33
8.1.60.0030.00617.57
8.1.50.0000.00817.30
8.1.40.0090.00017.44
8.1.30.0050.00317.56
8.1.20.0040.00417.56
8.1.10.0000.00717.54
8.1.00.0000.00817.30
8.0.300.0030.00518.77
8.0.290.0000.00716.75
8.0.280.0050.00218.48
8.0.270.0080.00017.17
8.0.260.0030.00316.85
8.0.250.0030.00316.98
8.0.240.0030.00316.93
8.0.230.0070.00016.79
8.0.220.0000.00816.74
8.0.210.0050.00316.79
8.0.200.0030.00316.86
8.0.190.0080.00016.78
8.0.180.0050.00316.79
8.0.170.0000.00716.85
8.0.160.0030.00316.81
8.0.150.0030.00416.79
8.0.140.0050.00316.79
8.0.130.0060.00013.13
8.0.120.0040.00416.76
8.0.110.0000.00716.65
8.0.100.0000.00716.77
8.0.90.0030.00316.73
8.0.80.0090.00616.88
8.0.70.0000.00816.89
8.0.60.0040.00416.86
8.0.50.0040.00416.65
8.0.30.0160.00616.90
8.0.20.0090.01017.40
8.0.10.0040.00416.98
8.0.00.0080.01016.71
7.4.330.0000.00515.02
7.4.320.0030.00316.55
7.4.300.0000.00616.54
7.4.290.0060.00316.54
7.4.280.0080.00016.45
7.4.270.0000.00616.54
7.4.260.0070.00016.38
7.4.250.0030.00316.45
7.4.240.0050.00216.47
7.4.230.0030.00316.65
7.4.220.0170.00016.64
7.4.210.0070.00916.57
7.4.200.0030.00316.55
7.4.190.0000.00716.30
7.4.160.0090.00616.18
7.4.150.0060.01217.40
7.4.140.0080.01317.86
7.4.130.0100.00916.54
7.4.120.0050.01316.54
7.4.110.0090.00916.62
7.4.100.0060.01016.60
7.4.90.0070.01016.39
7.4.80.0130.00319.39
7.4.70.0140.00316.61
7.4.60.0140.00416.32
7.4.50.0050.00016.23
7.4.40.0040.01122.77
7.4.30.0060.00916.37
7.4.00.0050.01014.89
7.3.330.0000.00613.11
7.3.320.0050.00013.05
7.3.310.0000.00716.14
7.3.300.0070.00016.20
7.3.290.0210.00016.17
7.3.280.0050.01016.23
7.3.270.0140.00717.40
7.3.260.0120.00416.14
7.3.250.0050.01216.25
7.3.240.0000.01716.42
7.3.230.0130.01016.44
7.3.210.0130.00316.24
7.3.200.0130.00919.39
7.3.190.0060.01716.22
7.3.180.0120.00416.22
7.3.170.0060.00916.38
7.3.160.0130.00316.41
7.3.120.0050.00714.90
7.3.110.0070.01114.70
7.3.100.0130.00014.85
7.3.90.0050.00514.74
7.3.80.0100.00614.74
7.3.70.0030.01314.61
7.3.60.0110.00314.88
7.3.50.0120.00614.71
7.3.40.0060.00314.55
7.3.30.0000.01414.89
7.3.20.0000.01416.65
7.3.10.0090.00216.73
7.3.00.0050.00516.65
7.2.330.0060.01316.59
7.2.320.0030.01416.28
7.2.310.0070.01416.48
7.2.300.0160.00016.43
7.2.290.0110.00616.41
7.2.250.0000.01114.96
7.2.240.0090.00614.54
7.2.230.0110.00714.83
7.2.220.0070.00315.09
7.2.210.0040.01115.10
7.2.200.0060.00615.02
7.2.190.0030.01214.63
7.2.180.0100.01014.82
7.2.170.0080.00315.05
7.2.130.0030.01016.67
7.2.120.0060.01016.59
7.2.110.0000.01116.64
7.2.100.0060.00616.87
7.2.90.0060.00616.63
7.2.80.0000.01116.68
7.2.70.0090.00316.51
7.2.60.0090.00016.79
7.2.50.0060.00816.80
7.2.40.0030.00616.86
7.2.30.0000.01117.03
7.2.20.0040.00416.94
7.2.10.0000.01116.85
7.2.00.0080.00416.80
7.1.330.0070.01015.74
7.1.320.0060.01015.86
7.1.310.0100.00615.53
7.1.300.0120.00315.82
7.1.290.0060.00315.82
7.1.280.0060.00615.58
7.1.270.0070.00715.78
7.1.260.0070.00715.79
7.1.250.0040.00815.59
7.1.70.0140.00317.27
7.1.60.0110.01419.33
7.1.50.0100.01316.94
7.1.00.0070.07322.37
7.0.200.0000.00816.94
7.0.140.0100.06721.99
7.0.60.0030.04019.93
7.0.50.0030.07017.77
7.0.40.0070.08320.24
7.0.30.0270.07720.00
7.0.20.0170.05020.00
7.0.10.0100.04320.11
7.0.00.0030.05720.00
5.6.280.0030.07320.89
5.6.210.0100.08020.50
5.6.200.0070.05018.15
5.6.190.0030.08020.32
5.6.180.0130.06320.61
5.6.170.0200.04320.50
5.6.160.0100.08020.37
5.6.150.0030.04318.22
5.6.140.0030.06718.11
5.6.130.0100.04718.21
5.6.120.0100.08320.89
5.6.110.0100.03721.08
5.6.100.0030.08320.96
5.6.90.0100.07321.05
5.6.80.0070.04020.36
5.6.70.4630.03720.35
5.5.350.0070.06320.42
5.5.340.0070.03718.02
5.5.330.0100.08020.36
5.5.320.0230.03720.30
5.5.310.0200.04320.29
5.5.300.0030.08718.01
5.5.290.0100.07017.97
5.5.280.0100.05720.87
5.5.270.0100.08020.81
5.5.260.0100.08020.72
5.5.250.0070.07720.69
5.5.240.0100.06020.18
5.4.450.0830.02719.53
5.4.440.0830.05319.37
5.4.430.0600.05719.36
5.4.420.0600.05319.51
5.4.410.0670.04719.22
5.4.400.0670.04319.34
5.4.390.0600.05019.21
5.4.380.0430.05318.74
5.4.370.0170.06018.72
5.4.360.0330.06718.60
5.4.350.0230.06018.61
5.4.340.0270.04718.65
5.4.320.0030.03812.45
5.4.310.0060.03812.45
5.4.300.0080.03512.45
5.4.290.0060.03812.45
5.4.280.0040.04312.34
5.4.270.0040.04012.34
5.4.260.0090.03412.35
5.4.250.0070.04412.34
5.4.240.0070.03512.35
5.4.230.0070.03812.34
5.4.220.0060.03612.34
5.4.210.0060.04212.34
5.4.200.0060.04012.34
5.4.190.0160.04512.31
5.4.180.0120.04812.31
5.4.170.0200.04412.32
5.4.160.0170.05012.32
5.4.150.0140.04812.31
5.4.140.0170.07512.00
5.4.130.0160.04211.99
5.4.120.0140.04511.95
5.4.110.0130.04811.94
5.4.100.0120.05011.94
5.4.90.0130.04811.94
5.4.80.0180.04011.94
5.4.70.0170.03911.94
5.4.60.0150.04211.94
5.4.50.0140.04111.94
5.4.40.0140.04211.92
5.4.30.0140.04411.92
5.4.20.0100.04611.93
5.4.10.0160.04111.92
5.4.00.0110.04511.41
5.3.290.0060.03912.80
5.3.280.0090.03512.71
5.3.270.0200.04312.73
5.3.260.0110.04912.72
5.3.250.0210.07612.71
5.3.240.0200.04012.71
5.3.230.0190.04312.71
5.3.220.0160.04412.68
5.3.210.0160.04512.68
5.3.200.0170.04312.68
5.3.190.0170.04412.68
5.3.180.0100.05012.67
5.3.170.0120.04612.67
5.3.160.0160.04612.68
5.3.150.0140.04412.67
5.3.140.0170.04312.66
5.3.130.0140.05012.66
5.3.120.0130.04712.66
5.3.110.0180.04212.66
5.3.100.0110.05012.12
5.3.90.0340.09012.09
5.3.80.0180.04012.07
5.3.70.0160.04312.08
5.3.60.0160.04312.06
5.3.50.0160.04312.00
5.3.40.0140.04512.00
5.3.30.0120.04511.94
5.3.20.0170.04011.70
5.3.10.0280.05811.67
5.3.00.0130.04311.65
5.2.170.0120.0369.16
5.2.160.0170.0309.16
5.2.150.0140.0329.16
5.2.140.0130.0359.15
5.2.130.0150.0309.11
5.2.120.0110.0379.11
5.2.110.0130.0359.12
5.2.100.0130.0369.12
5.2.90.0120.0409.12
5.2.80.0150.0359.11
5.2.70.0110.0389.11
5.2.60.0140.0349.06
5.2.50.0180.0609.04
5.2.40.0110.0389.01
5.2.30.0120.0358.98
5.2.20.0150.0348.97
5.2.10.0140.0348.89
5.2.00.0100.0378.75
5.1.60.0100.0298.04
5.1.50.0140.0278.03
5.1.40.0090.0318.02
5.1.30.0110.0318.37
5.1.20.0090.0338.39
5.1.10.0130.0298.11
5.1.00.0170.0548.12
5.0.50.0100.0256.60
5.0.40.0100.0216.45
5.0.30.0080.0356.27
5.0.20.0090.0226.24
5.0.10.0090.0226.21
5.0.00.0180.0566.21
4.4.90.0050.0234.78
4.4.80.0090.0154.76
4.4.70.0080.0184.76
4.4.60.0080.0174.75
4.4.50.0090.0194.77
4.4.40.0070.0304.71
4.4.30.0090.0174.76
4.4.20.0070.0214.84
4.4.10.0130.0144.84
4.4.00.0050.0314.76
4.3.110.0090.0154.67
4.3.100.0080.0184.67
4.3.90.0080.0164.63
4.3.80.0070.0294.59
4.3.70.0110.0154.63
4.3.60.0070.0164.63
4.3.50.0060.0184.63
4.3.40.0090.0244.54
4.3.30.0050.0203.28
4.3.20.0050.0183.26
4.3.10.0050.0183.23
4.3.00.0270.01315.59

preferences:
49.65 ms | 400 KiB | 5 Q