3v4l.org

run code in 300+ PHP versions simultaneously
<?php $number = '9191919191'; $rest = substr($number, 0,4); $rest2 = substr($number, -1,4); $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)
8.3.60.0030.01718.30
8.3.50.0100.00922.03
8.3.40.0110.00318.76
8.3.30.0100.00719.10
8.3.20.0000.00720.29
8.3.10.0080.00021.94
8.3.00.0040.00422.42
8.2.180.0190.00016.63
8.2.170.0030.01422.96
8.2.160.0080.00821.10
8.2.150.0040.00424.18
8.2.140.0100.01024.66
8.2.130.0100.00326.16
8.2.120.0050.00319.48
8.2.110.0000.00922.20
8.2.100.0000.01117.78
8.2.90.0080.00017.91
8.2.80.0000.00817.97
8.2.70.0040.00417.50
8.2.60.0000.00817.93
8.2.50.0040.00418.07
8.2.40.0030.00618.28
8.2.30.0060.00318.08
8.2.20.0040.00417.57
8.2.10.0060.00319.58
8.2.00.0000.00717.68
8.1.280.0140.00025.92
8.1.270.0000.00722.14
8.1.260.0040.00426.35
8.1.250.0050.00328.09
8.1.240.0090.00022.52
8.1.230.0040.00720.88
8.1.220.0050.00317.79
8.1.210.0060.00318.88
8.1.200.0030.00617.34
8.1.190.0040.00417.28
8.1.180.0040.00418.10
8.1.170.0000.00818.53
8.1.160.0070.00022.01
8.1.150.0070.00018.56
8.1.140.0050.00317.45
8.1.130.0030.00317.79
8.1.120.0040.00417.52
8.1.110.0040.00417.51
8.1.100.0050.00317.36
8.1.90.0050.00317.45
8.1.80.0060.00317.53
8.1.70.0040.00417.41
8.1.60.0070.00417.46
8.1.50.0040.00417.56
8.1.40.0070.00017.35
8.1.30.0000.00717.54
8.1.20.0030.00517.54
8.1.10.0000.00817.48
8.1.00.0000.00817.30
8.0.300.0080.00019.91
8.0.290.0070.00017.18
8.0.280.0030.00318.35
8.0.270.0040.00417.17
8.0.260.0040.00416.78
8.0.250.0000.00716.96
8.0.240.0080.00016.96
8.0.230.0070.00016.86
8.0.220.0070.00016.91
8.0.210.0030.00316.81
8.0.200.0030.00316.96
8.0.190.0040.00416.93
8.0.180.0030.00516.94
8.0.170.0000.00716.82
8.0.160.0040.00416.87
8.0.150.0040.00416.90
8.0.140.0030.00616.93
8.0.130.0050.00313.36
8.0.120.0080.00016.80
8.0.110.0040.00416.88
8.0.100.0040.00416.83
8.0.90.0000.00716.76
8.0.80.0100.00616.78
8.0.70.0040.00416.86
8.0.60.0000.00816.79
8.0.50.0040.00416.79
8.0.30.0080.01116.99
8.0.20.0100.00717.40
8.0.10.0040.00416.84
8.0.00.0080.01516.63
7.4.330.0020.00215.00
7.4.320.0060.00016.40
7.4.300.0050.00316.50
7.4.290.0070.00016.39
7.4.280.0040.00416.64
7.4.270.0000.00716.56
7.4.260.0080.00316.58
7.4.250.0020.00516.56
7.4.240.0040.00516.53
7.4.230.0020.00516.65
7.4.220.0130.01016.61
7.4.210.0110.00716.45
7.4.200.0050.00216.28
7.4.190.0000.00816.58
7.4.160.0060.01016.41
7.4.150.0060.01017.40
7.4.140.0050.01317.86
7.4.130.0120.00716.50
7.4.120.0090.00916.41
7.4.110.0030.01416.34
7.4.100.0110.00716.31
7.4.90.0100.00716.54
7.4.80.0060.00919.39
7.4.70.0000.01616.45
7.4.60.0130.00416.46
7.4.50.0050.00316.36
7.4.40.0060.01022.77
7.4.30.0030.01316.41
7.4.00.0100.00414.92
7.3.330.0030.00513.09
7.3.320.0000.00513.07
7.3.310.0040.00416.13
7.3.300.0000.00616.21
7.3.290.0090.00916.15
7.3.280.0060.01116.20
7.3.270.0100.00717.40
7.3.260.0100.00716.29
7.3.250.0070.01316.13
7.3.240.0070.01116.55
7.3.230.0160.00016.39
7.3.210.0140.00316.57
7.3.200.0060.01119.39
7.3.190.0080.01216.46
7.3.180.0140.00316.43
7.3.170.0090.01216.27
7.3.160.0060.01016.25
7.3.120.0070.00714.61
7.2.330.0100.00616.82
7.2.320.0170.00616.44
7.2.310.0100.00616.91
7.2.300.0090.01016.70
7.2.290.0090.01216.34
7.2.00.0040.00719.13
7.1.100.0030.00818.31
7.1.70.0030.00717.20
7.1.60.0040.01219.82
7.1.50.0080.00816.86
7.1.00.0000.08022.40
7.0.200.0060.00616.70
7.0.140.0070.06721.99
7.0.60.0170.04020.08
7.0.50.0100.05317.87
7.0.40.0100.07020.32
7.0.30.0130.04720.09
7.0.20.0200.04020.02
7.0.10.0030.07020.33
7.0.00.0030.08020.13
5.6.280.0070.07020.81
5.6.210.0130.04020.66
5.6.200.0030.04018.17
5.6.190.0100.03720.59
5.6.180.0330.06020.47
5.6.170.0130.05720.47
5.6.160.0030.08320.40
5.6.150.0030.08718.09
5.6.140.0100.07718.21
5.6.130.0100.07018.11
5.6.120.0070.08721.04
5.6.110.0100.06320.88
5.6.100.0030.04020.97
5.6.90.0130.08320.95
5.6.80.0070.03720.52
5.5.350.0400.06720.42
5.5.340.0070.06018.00
5.5.330.0100.06320.15
5.5.320.0270.04020.32
5.5.310.0270.07320.28
5.5.300.0030.04317.95
5.5.290.0030.04318.02
5.5.280.0200.02720.76
5.5.270.0030.04720.79
5.5.260.0100.04320.79
5.5.250.0200.07020.60
5.5.240.0170.08020.23
5.4.450.0600.06319.09
5.4.440.0070.06019.29
5.4.430.0100.05319.30
5.4.420.0170.05019.34
5.4.410.0100.05318.88
5.4.400.0030.06018.77
5.4.390.0030.05718.46
5.4.380.0100.05318.74
5.4.370.0200.04718.50
5.4.360.0170.05018.62
5.4.350.0300.04018.58
5.4.340.0230.05018.55
5.4.320.0080.03412.45
5.4.310.0100.04112.45
5.4.300.0050.04212.45
5.4.290.0110.04312.45
5.4.280.0060.04212.35
5.4.270.0130.05018.74
5.4.260.0170.04318.90
5.4.250.0100.08018.88
5.4.240.0170.04319.01
5.4.230.0270.06018.69
5.4.220.0130.05318.82
5.4.210.0070.06318.73
5.4.200.0030.07718.64
5.4.190.0070.06719.00
5.4.180.0130.04718.89
5.4.170.0130.07018.71
5.4.160.0170.07019.02
5.4.150.0130.06719.00
5.4.140.0030.06716.21
5.4.130.0130.04016.19
5.4.120.0170.04716.21
5.4.110.0100.06716.48
5.4.100.0270.05016.45
5.4.90.0030.05316.34
5.4.80.0070.05016.47
5.4.70.0100.06016.32
5.4.60.0100.06716.50
5.4.50.0100.07016.39
5.4.40.0100.05016.37
5.4.30.0170.04316.45
5.4.20.0130.06016.46
5.4.10.0100.04716.46
5.4.00.0130.04715.93
5.3.290.0050.04012.80
5.3.280.0170.06014.52
5.3.270.0100.05314.71
5.3.260.0130.04714.43
5.3.250.0230.04714.37
5.3.240.0130.04714.61
5.3.230.0230.05314.46
5.3.220.0130.04314.56
5.3.210.0100.06314.43
5.3.200.0100.05714.48
5.3.190.0070.05314.48
5.3.180.0170.04314.57
5.3.170.0030.05314.57
5.3.160.0200.04714.41
5.3.150.0130.05714.57
5.3.140.0170.04314.55
5.3.130.0070.05314.55
5.3.120.0130.06314.63
5.3.110.0070.05314.69
5.3.100.0030.05713.73
5.3.90.0100.05713.86
5.3.80.0130.05314.16
5.3.70.0070.05014.11
5.3.60.0170.05714.09
5.3.50.0000.07313.99
5.3.40.0100.06713.66
5.3.30.0100.07014.05
5.3.20.0070.07013.46
5.3.10.0130.06313.80
5.3.00.0100.05713.68
5.2.170.0100.04711.15
5.2.160.0100.03711.08
5.2.150.0030.06010.90
5.2.140.0170.04311.15
5.2.130.0070.04011.25
5.2.120.0130.04011.11
5.2.110.0030.04310.93
5.2.100.0070.03710.98
5.2.90.0130.03310.86
5.2.80.0070.06011.10
5.2.70.0100.03711.02
5.2.60.0130.03711.06
5.2.50.0100.05311.11
5.2.40.0070.04010.88
5.2.30.0100.03310.98
5.2.20.0200.03311.06
5.2.10.0130.04311.01
5.2.00.0100.03710.55
5.1.60.0030.04010.15
5.1.50.0030.0339.96
5.1.40.0130.0409.86
5.1.30.0000.05710.40
5.1.20.0100.03710.35
5.1.10.0100.0309.91
5.1.00.0070.04710.30
5.0.50.0030.0338.39
5.0.40.0070.0408.49
5.0.30.0070.0508.26
5.0.20.0030.0408.18
5.0.10.0030.0408.08
5.0.00.0000.0508.24
4.4.90.0030.0306.94
4.4.80.0100.0136.94
4.4.70.0070.0176.94
4.4.60.0030.0236.94
4.4.50.0000.0336.94
4.4.40.0100.0336.94
4.4.30.0030.0276.94
4.4.20.0130.0206.94
4.4.10.0030.0206.94
4.4.00.0000.0376.94
4.3.110.0000.0236.94
4.3.100.0030.0236.94
4.3.90.0030.0206.94
4.3.80.0000.0476.94
4.3.70.0030.0236.94
4.3.60.0000.0236.94
4.3.50.0030.0306.94
4.3.40.0000.0336.94
4.3.30.0070.0176.94
4.3.20.0100.0136.94
4.3.10.0000.0306.94
4.3.00.0130.0206.95

preferences:
30.11 ms | 401 KiB | 5 Q