3v4l.org

run code in 300+ PHP versions simultaneously
<?php $dword = '00000000'; for ($i = 0; $i < 2000; ++$i){ $dword = dword_inc($dword); echo $dword."\n"; } function dword_inc($dword){ if (empty($dword)){ return '1'; } $last = $dword{strlen($dword)-1}; if ($last == 9){ $last = 'A'; }else{ $last++; } if ($last == 'G'){ $last = 0; if (strlen($dword) > 1){ $dword2 = dword_inc(substr($dword, 0, strlen($dword)-1)); $dword = $dword2.'0'; }else{ $dword = '1'.$dword; } }else{ $dword{strlen($dword)-1} = $last; } return $dword; }

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)
8.3.60.0070.00718.56
8.3.50.0130.00522.12
8.3.40.0150.00618.70
8.3.30.0070.01018.96
8.3.20.0070.00020.34
8.3.10.0000.00723.61
8.3.00.0000.01119.08
8.2.180.0070.01016.38
8.2.170.0070.00722.96
8.2.160.0040.01120.52
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0000.00726.16
8.2.120.0060.00319.36
8.2.110.0060.00322.07
8.2.100.0110.00017.91
8.2.90.0040.00419.10
8.2.80.0030.00617.97
8.2.70.0050.00317.50
8.2.60.0090.00317.80
8.2.50.0030.00618.07
8.2.40.0030.00619.94
8.2.30.0030.00518.10
8.2.20.0050.00217.63
8.2.10.0070.00018.03
8.2.00.0050.00319.34
8.1.280.0150.00025.92
8.1.270.0090.00623.86
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0090.00023.89
8.1.230.0040.00819.05
8.1.220.0000.00917.74
8.1.210.0040.00418.77
8.1.200.0030.00617.10
8.1.190.0000.00817.10
8.1.180.0000.00918.10
8.1.170.0060.00318.50
8.1.160.0070.00021.94
8.1.150.0070.00018.40
8.1.140.0040.00417.28
8.1.130.0000.00717.75
8.1.120.0050.00317.26
8.1.110.0050.00317.21
8.1.100.0000.00717.33
8.1.90.0030.00317.34
8.1.80.0030.00417.36
8.1.70.0000.00717.27
8.1.60.0040.00417.43
8.1.50.0080.00017.29
8.1.40.0000.00917.30
8.1.30.0000.00817.35
8.1.20.0050.00317.42
8.1.10.0030.00517.34
8.1.00.0070.00317.39
8.0.300.0070.00018.77
8.0.290.0040.00416.63
8.0.280.0030.00318.27
8.0.270.0030.00317.06
8.0.260.0030.00317.17
8.0.250.0080.00016.95
8.0.240.0040.00416.92
8.0.230.0000.00716.93
8.0.220.0030.00316.79
8.0.210.0070.00016.86
8.0.200.0000.00716.84
8.0.190.0000.00716.84
8.0.180.0040.00416.75
8.0.170.0050.00316.86
8.0.160.0070.00016.77
8.0.150.0000.00816.68
8.0.140.0000.00716.84
8.0.130.0040.00413.27
8.0.120.0020.00516.81
8.0.110.0040.00416.85
8.0.100.0070.00016.76
8.0.90.0070.00016.71
8.0.80.0110.00516.83
8.0.70.0050.00216.81
8.0.60.0030.00316.77
8.0.50.0000.00716.69
8.0.30.0130.00616.95
8.0.20.0120.01317.40
8.0.10.0000.00816.80
8.0.00.0100.00816.72
7.4.330.0060.00015.00
7.4.320.0040.00416.48
7.4.300.0000.00916.59
7.4.290.0030.00516.63
7.4.280.0090.00016.70
7.4.270.0000.00916.62
7.4.260.0060.00316.60
7.4.250.0030.00616.63
7.4.240.0030.00616.60
7.4.230.0040.00416.69
7.4.220.0130.01016.73
7.4.210.0070.01316.72
7.4.200.0000.00916.71
7.4.160.0190.00916.57
7.4.150.0240.01517.40
7.4.140.0180.01217.86
7.4.130.0140.01416.47
7.4.120.0240.01316.74
7.4.110.0160.01616.63
7.4.100.0170.01616.46
7.4.90.0150.01216.39
7.4.80.0130.01819.39
7.4.70.0260.00816.59
7.4.60.0130.01016.52
7.4.50.0030.00316.59
7.4.40.0180.00816.45
7.4.30.0130.01016.59
7.4.00.0030.01414.64
7.3.330.0030.00313.34
7.3.320.0030.00313.19
7.3.310.0050.00316.37
7.3.300.0030.00616.35
7.3.290.0150.00616.39
7.3.280.0090.01216.38
7.3.270.0060.02117.40
7.3.260.0240.01016.29
7.3.250.0220.01316.43
7.3.240.0080.02516.61
7.3.230.0190.01016.39
7.3.210.0180.01116.56
7.3.200.0150.01119.39
7.3.190.0170.00716.27
7.3.180.0120.00916.57
7.3.170.0130.01016.53
7.3.160.0060.02316.60
7.3.120.0090.00914.54
7.3.10.0180.00616.57
7.3.00.0090.01216.08
7.2.330.0210.01016.68
7.2.320.0210.01316.66
7.2.310.0120.01616.60
7.2.300.0180.01416.68
7.2.290.0160.01216.54
7.2.130.0150.00816.60
7.2.120.0180.00316.43
7.2.110.0150.00616.27
7.2.100.0160.00816.54
7.2.90.0190.00616.55
7.2.80.0150.00716.16
7.2.70.0190.01016.65
7.2.60.0060.01316.66
7.2.50.0070.00716.61
7.2.40.0190.00016.87
7.2.30.0040.01517.01
7.2.20.0120.00916.96
7.2.10.0070.00716.85
7.2.00.0190.00016.92
7.1.250.0100.01915.34
7.1.200.0030.01415.85
7.1.70.0080.00017.03
7.1.60.0070.02019.70
7.1.50.0040.01916.68
7.1.00.0100.07722.43
7.0.200.0070.00716.94
7.0.140.0070.07322.00
7.0.60.0100.06019.88
7.0.50.0000.04317.86
7.0.40.0030.06020.10
7.0.30.0330.07320.16
7.0.20.0300.08020.25
7.0.10.0270.05020.09
7.0.00.0100.03720.09
5.6.280.0030.08021.02
5.6.210.0100.05320.55
5.6.200.0070.09018.23
5.6.190.0030.05020.57
5.6.180.0370.06720.55
5.6.170.0270.07020.55
5.6.160.0130.07020.46
5.6.150.0000.05318.29
5.6.140.0170.03318.27
5.6.130.0100.09018.18
5.6.120.0030.04320.90
5.6.110.0130.07321.12
5.6.100.0030.04320.89
5.6.90.0230.07721.09
5.6.80.0030.07720.54
5.6.70.0200.06020.47
5.5.350.0030.08320.53
5.5.340.0000.05018.08
5.5.330.0070.09020.26
5.5.320.0270.03720.27
5.5.310.0370.07320.36
5.5.300.0070.05018.08
5.5.290.0070.08317.95
5.5.280.0130.08720.74
5.5.270.0130.07720.77
5.5.260.0170.08020.77
5.5.250.0130.08320.71
5.5.240.0200.07320.24
5.4.450.0270.05043.77
5.4.440.0130.05037.18
5.4.430.0230.04733.66
5.4.420.0270.04733.63
5.4.410.0470.04333.62
5.4.400.0470.04333.61
5.4.390.0400.04333.59
5.4.380.0270.06018.64
5.4.370.0330.08718.64
5.4.360.0170.06018.64
5.4.350.0270.06318.45
5.4.340.0170.07318.64
5.4.320.0110.04112.51
5.4.310.0110.05412.50
5.4.300.0090.05012.50
5.4.290.0090.04512.50
5.4.280.0070.04412.39
5.4.270.0120.04212.39
5.4.260.0100.04712.39
5.4.250.0130.04212.40
5.4.240.0090.04312.40
5.4.230.0130.04912.39
5.4.220.0150.04212.39
5.4.210.0090.04112.39
5.4.200.0070.04612.39
5.4.190.0120.04312.39
5.4.180.0110.04012.39
5.4.170.0050.04712.40
5.4.160.0100.04312.39
5.4.150.0110.04112.39
5.4.140.0160.04312.07
5.4.130.0060.04612.06
5.4.120.0130.04012.02
5.4.110.0170.04012.01
5.4.100.0100.04112.02
5.4.90.0100.04412.01
5.4.80.0110.04412.01
5.4.70.0110.04612.01
5.4.60.0160.04412.01
5.4.50.0150.04412.01
5.4.40.0100.04212.00
5.4.30.0110.03912.00
5.4.20.0070.04411.99
5.4.10.0120.04211.99
5.4.00.0110.04811.48
5.3.290.0140.04912.80
5.3.280.0130.05112.71
5.3.270.0150.04212.72
5.3.260.0080.05212.71
5.3.250.0100.04512.72
5.3.240.0130.04512.72
5.3.230.0140.04312.71
5.3.220.0120.04912.68
5.3.210.0110.05112.68
5.3.200.0120.04312.68
5.3.190.0130.04212.68
5.3.180.0120.04112.67
5.3.170.0080.05112.67
5.3.160.0130.04012.67
5.3.150.0150.04712.67
5.3.140.0070.04912.66
5.3.130.0120.05312.65
5.3.120.0120.05212.66
5.3.110.0120.04912.66
5.3.100.0100.04412.11
5.3.90.0130.04012.10
5.3.80.0090.04412.09
5.3.70.0110.04112.09
5.3.60.0110.04112.08
5.3.50.0120.04812.02
5.3.40.0110.04712.03
5.3.30.0070.04411.98
5.3.20.0150.04111.76
5.3.10.0070.04511.73
5.3.00.0140.05611.72
5.2.170.0080.0479.22
5.2.160.0120.0359.22
5.2.150.0090.0369.22
5.2.140.0060.0479.21
5.2.130.0120.0379.18
5.2.120.0070.0449.18
5.2.110.0120.0349.18
5.2.100.0080.0439.18
5.2.90.0100.0359.18
5.2.80.0110.0359.17
5.2.70.0130.0379.17
5.2.60.0070.0399.13
5.2.50.0140.0379.10
5.2.40.0080.0399.07
5.2.30.0140.0369.05
5.2.20.0070.0389.04
5.2.10.0130.0368.94
5.2.00.0080.0448.80
5.1.60.0140.0298.09
5.1.50.0100.0298.08
5.1.40.0110.0308.06
5.1.30.0070.0418.41
5.1.20.0100.0338.44
5.1.10.0070.0388.16
5.1.00.0060.0348.16
5.0.50.0080.0326.66
5.0.40.0060.0316.51
5.0.30.0100.0416.33
5.0.20.0110.0266.29
5.0.10.0090.0286.27
5.0.00.0060.0476.27
4.4.90.0090.0324.78
4.4.80.0080.0214.75
4.4.70.0070.0244.75
4.4.60.0080.0234.75
4.4.50.0080.0274.77
4.4.40.0070.0354.71
4.4.30.0120.0284.76
4.4.20.0080.0284.84
4.4.10.0060.0344.85
4.4.00.0080.0404.76
4.3.110.0070.0264.67
4.3.100.0050.0314.66
4.3.90.0070.0294.63
4.3.80.0080.0334.58
4.3.70.0080.0254.63
4.3.60.0070.0254.62
4.3.50.0100.0274.63
4.3.40.0100.0384.53
4.3.30.0080.0243.33
4.3.20.0100.0243.31
4.3.10.0050.0253.27
4.3.00.0230.01731.27

preferences:
46.9 ms | 401 KiB | 5 Q