3v4l.org

run code in 300+ PHP versions simultaneously
<?php $number = '9191919191'; $rest = substr($number, 0, 4); $rest2 = substr($number, -4, 0); $f = $rest.'-'.$rest2; echo $f;

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)
8.3.60.0070.01316.38
8.3.50.0070.01421.94
8.3.40.0070.00718.84
8.3.30.0090.00618.96
8.3.20.0040.00420.34
8.3.10.0000.00823.48
8.3.00.0030.00520.77
8.2.180.0070.01116.50
8.2.170.0130.00322.96
8.2.160.0100.00720.28
8.2.150.0080.00024.18
8.2.140.0060.00324.66
8.2.130.0040.00426.16
8.2.120.0000.00822.27
8.2.110.0100.00020.45
8.2.100.0120.00017.66
8.2.90.0040.00419.23
8.2.80.0040.00417.97
8.2.70.0030.00617.50
8.2.60.0050.00517.80
8.2.50.0040.00418.07
8.2.40.0050.00318.16
8.2.30.0050.00318.02
8.2.20.0040.00417.57
8.2.10.0050.00317.79
8.2.00.0080.00017.78
8.1.280.0030.01425.92
8.1.270.0000.00823.88
8.1.260.0000.00826.35
8.1.250.0030.00528.09
8.1.240.0030.00620.90
8.1.230.0080.00419.05
8.1.220.0050.00317.74
8.1.210.0080.00018.77
8.1.200.0110.00017.35
8.1.190.0080.00017.53
8.1.180.0040.00418.10
8.1.170.0000.00818.51
8.1.160.0040.00421.95
8.1.150.0040.00418.51
8.1.140.0030.00517.32
8.1.130.0000.00717.36
8.1.120.0040.00317.36
8.1.110.0030.00517.35
8.1.100.0040.00417.47
8.1.90.0000.00717.36
8.1.80.0070.00017.43
8.1.70.0000.00817.34
8.1.60.0080.00017.48
8.1.50.0040.00417.57
8.1.40.0060.00317.43
8.1.30.0030.00517.58
8.1.20.0040.00417.71
8.1.10.0080.00017.41
8.1.00.0050.00217.52
8.0.300.0000.00918.77
8.0.290.0080.00017.17
8.0.280.0030.00318.47
8.0.270.0070.00017.22
8.0.260.0000.00816.82
8.0.250.0030.00316.86
8.0.240.0070.00016.88
8.0.230.0040.00416.91
8.0.220.0040.00416.78
8.0.210.0030.00316.80
8.0.200.0000.00616.86
8.0.190.0030.00516.92
8.0.180.0030.00316.93
8.0.170.0060.00316.92
8.0.160.0040.00416.85
8.0.150.0030.00316.71
8.0.140.0000.00816.81
8.0.130.0030.00313.35
8.0.120.0050.00216.87
8.0.110.0000.00716.93
8.0.100.0040.00416.72
8.0.90.0040.00416.83
8.0.80.0080.00816.95
8.0.70.0000.00716.77
8.0.60.0030.00616.84
8.0.50.0040.00416.84
8.0.30.0090.00916.84
8.0.20.0080.01017.40
8.0.10.0040.00416.95
8.0.00.0070.01116.71
7.4.330.0020.00215.00
7.4.320.0030.00316.59
7.4.300.0060.00016.50
7.4.290.0020.00516.52
7.4.280.0040.00416.63
7.4.270.0000.00716.45
7.4.260.0070.00016.48
7.4.250.0000.00716.54
7.4.240.0020.00516.53
7.4.230.0030.00316.27
7.4.220.0090.00916.65
7.4.210.0070.00716.50
7.4.200.0040.00416.34
7.4.190.0070.00016.70
7.4.160.0100.00516.32
7.4.150.0130.00417.40
7.4.140.0120.00517.86
7.4.130.0110.00616.46
7.4.120.0120.00616.51
7.4.110.0120.00916.42
7.4.100.0140.00316.48
7.4.90.0060.01016.54
7.4.80.0040.01816.45
7.4.70.0090.00616.24
7.4.60.0070.01016.37
7.4.50.0000.00816.12
7.4.40.0070.00722.77
7.4.30.0030.01316.39
7.4.00.0110.00414.96
7.3.330.0000.00513.16
7.3.320.0030.00312.94
7.3.310.0000.00616.14
7.3.300.0030.00316.15
7.3.290.0040.01216.25
7.3.280.0090.00716.18
7.3.270.0100.00717.40
7.3.260.0070.01016.24
7.3.250.0120.00616.30
7.3.240.0140.00316.25
7.3.230.0100.00616.39
7.3.210.0060.01216.18
7.3.200.0110.01119.39
7.3.190.0130.00916.17
7.3.180.0070.01416.57
7.3.170.0060.01016.49
7.3.160.0060.01116.31
7.3.120.0040.01114.85
7.2.330.0110.00716.73
7.2.320.0170.00016.37
7.2.310.0090.00916.49
7.2.300.0030.01316.54
7.2.290.0060.01216.55
7.2.00.0090.00619.61
7.1.100.0070.01018.15
7.1.70.0000.00816.85
7.1.60.0000.01719.29
7.1.50.0100.01317.11
7.1.00.0030.07722.57
7.0.200.0030.00716.88
7.0.140.0100.06721.92
7.0.60.0070.06719.92
7.0.50.0030.05017.80
7.0.40.0100.07720.36
7.0.30.0270.07720.00
7.0.20.0230.06720.16
7.0.10.0300.07320.09
7.0.00.0070.08320.12
5.6.210.0130.07720.76
5.6.200.0070.04318.09
5.6.190.0070.04320.35
5.6.180.0070.08020.39
5.6.170.0200.08020.50
5.6.160.0100.07020.44
5.6.150.0030.05018.16
5.6.140.0030.04018.14
5.6.130.0170.07318.12
5.6.120.0100.07320.96
5.6.110.0070.07321.10
5.6.100.0100.07721.00
5.6.90.0100.08320.98
5.6.80.0070.06720.40
5.5.350.0000.08320.52
5.5.340.0070.07017.98
5.5.330.0030.07320.23
5.5.320.0000.08020.13
5.5.310.0230.06020.26
5.5.300.0130.06317.92
5.5.290.0100.08317.91
5.5.280.0100.08320.77
5.5.270.0070.08320.86
5.5.260.0130.07720.63
5.5.250.0070.03720.77
5.5.240.0170.06320.23
5.4.450.1830.03319.42
5.4.440.0830.06019.44
5.4.430.0170.08019.41
5.4.420.0830.08319.47
5.4.410.0930.05319.27
5.4.400.0970.06019.32
5.4.390.0870.08319.00
5.4.380.0130.06018.61
5.4.370.0100.05718.55
5.4.360.0170.05018.72
5.4.350.0270.04318.59
5.4.340.0270.04718.68
5.4.320.0070.03512.45
5.4.310.0060.03812.45
5.4.300.0080.04512.45
5.4.290.0060.03712.45
5.4.280.0060.03612.34
5.4.270.0040.03812.32
5.4.260.0050.03812.32
5.4.250.0040.04212.31
5.4.240.0030.04112.31
5.4.230.0050.04112.30
5.4.220.0040.04112.31
5.4.210.0060.03712.30
5.4.200.0080.03612.30
5.4.190.0050.04812.30
5.4.180.0080.03612.30
5.4.170.0070.03612.32
5.4.160.0060.03712.31
5.4.150.0040.03912.30
5.4.140.0080.03711.99
5.4.130.0080.04011.98
5.4.120.0090.03311.93
5.4.110.0050.03711.93
5.4.100.0060.03611.93
5.4.90.0070.03611.93
5.4.80.0070.03711.93
5.4.70.0050.04611.92
5.4.60.0030.04711.93
5.4.50.0020.03811.93
5.4.40.0070.03311.91
5.4.30.0050.03611.91
5.4.20.0040.03911.91
5.4.10.0090.03411.91
5.4.00.0050.03811.39
5.3.290.0080.04112.80
5.3.280.0050.04012.71
5.3.270.0050.04312.72
5.3.260.0090.03812.72
5.3.250.0040.04012.72
5.3.240.0050.04312.72
5.3.230.0080.03812.71
5.3.220.0070.03612.68
5.3.210.0090.03612.68
5.3.200.0040.04012.68
5.3.190.0070.03912.67
5.3.180.0100.05212.68
5.3.170.0090.05012.67
5.3.160.0080.06012.67
5.3.150.0060.05212.67
5.3.140.0070.04312.66
5.3.130.0110.04012.66
5.3.120.0050.04212.65
5.3.110.0050.03912.66
5.3.100.0050.03912.12
5.3.90.0070.04712.09
5.3.80.0060.04112.07
5.3.70.0070.04312.08
5.3.60.0030.04312.06
5.3.50.0070.03612.00
5.3.40.0060.03712.00
5.3.30.0050.03611.94
5.3.20.0100.03311.69
5.3.10.0060.04111.65
5.3.00.0050.03911.63
5.2.170.0020.0339.14
5.2.160.0030.0329.14
5.2.150.0060.0379.14
5.2.140.0040.0329.13
5.2.130.0080.0299.10
5.2.120.0120.0289.09
5.2.110.0050.0389.10
5.2.100.0110.0329.11
5.2.90.0040.0419.10
5.2.80.0100.0519.09
5.2.70.0080.0399.09
5.2.60.0090.0469.05
5.2.50.0050.0439.02
5.2.40.0080.0309.00
5.2.30.0060.0288.96
5.2.20.0040.0298.96
5.2.10.0040.0348.88
5.2.00.0040.0378.75
5.1.60.0030.0338.03
5.1.50.0050.0328.03
5.1.40.0120.0358.01
5.1.30.0040.0368.36
5.1.20.0080.0348.38
5.1.10.0060.0258.11
5.1.00.0070.0248.10
5.0.50.0040.0206.58
5.0.40.0020.0216.45
5.0.30.0030.0336.25
5.0.20.0050.0206.23
5.0.10.0030.0236.21
5.0.00.0030.0416.20
4.4.90.0050.0184.78
4.4.80.0030.0224.75
4.4.70.0010.0184.76
4.4.60.0010.0184.76
4.4.50.0030.0224.77
4.4.40.0020.0344.70
4.4.30.0040.0204.75
4.4.20.0050.0204.84
4.4.10.0040.0214.85
4.4.00.0060.0294.76
4.3.110.0030.0214.67
4.3.100.0020.0184.66
4.3.90.0040.0214.64
4.3.80.0040.0304.59
4.3.70.0060.0164.63
4.3.60.0040.0204.63
4.3.50.0040.0214.63
4.3.40.0030.0314.53
4.3.30.0010.0183.27
4.3.20.0020.0163.25
4.3.10.0000.0173.21
4.3.00.0100.01713.14

preferences:
48.09 ms | 401 KiB | 5 Q