3v4l.org

run code in 300+ PHP versions simultaneously
<?php function calculateLevels( $total, $totalPerLevel = 2, $iteration = 0 ) { if( $total <= 1 ) { return $iteration; } else { if ( $totalPerLevel === 1 ) { $total--; } return calculateLevels( (int) ( $total / $totalPerLevel ), $totalPerLevel, $iteration + 1 ); } } $x = 15; echo "$x - " .calculateLevels( $x,2 ) . "\n"; $x = 15; echo "$x - " .calculateLevels( $x,5 ) . "\n"; $x = 15; echo "$x - " .calculateLevels( $x,3 ) . "\n"; $x = 15; echo "$x - " .calculateLevels( $x,1 ) . "\n"; $x = 15; echo "$x - " .calculateLevels( $x,8 ) . "\n"; $x = 15; echo "$x - " .calculateLevels( $x,0 ) . "\n";

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)
8.3.60.0200.00018.34
8.3.50.0120.00622.05
8.3.40.0040.01118.71
8.3.30.0100.00719.09
8.3.20.0070.00020.16
8.3.10.0080.00023.66
8.3.00.0000.00820.70
8.2.180.0040.01416.88
8.2.170.0170.00322.96
8.2.160.0070.00720.39
8.2.150.0110.00624.18
8.2.140.0040.00424.66
8.2.130.0100.01026.16
8.2.120.0000.00820.86
8.2.110.0060.00320.51
8.2.100.0040.00718.03
8.2.90.0000.00819.27
8.2.80.0000.00817.97
8.2.70.0040.00417.50
8.2.60.0060.00317.93
8.2.50.0060.00318.07
8.2.40.0000.00819.88
8.2.30.0050.00518.19
8.2.20.0000.00817.67
8.2.10.0040.00418.16
8.2.00.0040.00417.75
8.1.280.0120.00625.92
8.1.270.0100.00722.06
8.1.260.0150.00326.35
8.1.250.0040.00428.09
8.1.240.0060.00323.79
8.1.230.0040.00817.45
8.1.220.0050.00317.74
8.1.210.0030.00618.77
8.1.200.0030.00717.35
8.1.190.0050.00317.25
8.1.180.0080.00318.10
8.1.170.0030.00618.59
8.1.160.0050.00222.02
8.1.150.0000.00718.64
8.1.140.0000.00717.39
8.1.130.0030.00317.75
8.1.120.0070.00017.36
8.1.110.0000.00717.45
8.1.100.0070.00017.38
8.1.90.0000.00717.49
8.1.80.0080.00017.45
8.1.70.0000.00817.36
8.1.60.0050.00517.61
8.1.50.0090.00017.41
8.1.40.0030.00517.51
8.1.30.0030.00617.70
8.1.20.0020.00517.68
8.1.10.0040.00417.60
8.1.00.0000.00817.50
8.0.300.0050.00218.77
8.0.290.0060.00316.75
8.0.280.0000.00718.46
8.0.270.0070.00017.27
8.0.260.0060.00017.22
8.0.250.0030.00317.05
8.0.240.0040.00417.03
8.0.230.0040.00417.07
8.0.220.0000.00817.01
8.0.210.0000.00716.99
8.0.200.0030.00316.99
8.0.190.0030.00616.96
8.0.180.0040.00416.95
8.0.170.0030.00617.03
8.0.160.0000.00716.84
8.0.150.0050.00316.92
8.0.140.0040.00416.94
8.0.130.0060.00013.38
8.0.120.0000.00816.86
8.0.110.0040.00417.04
8.0.100.0050.00316.83
8.0.90.0070.00016.86
8.0.80.0060.01517.04
8.0.70.0070.00016.84
8.0.60.0040.00416.96
8.0.50.0040.00417.03
8.0.30.0130.00617.11
8.0.20.0060.01317.40
8.0.10.0040.00416.95
8.0.00.0080.01116.96
7.4.330.0050.00015.00
7.4.320.0080.00016.70
7.4.300.0000.00616.62
7.4.290.0070.00416.59
7.4.280.0000.00716.61
7.4.270.0030.00316.57
7.4.260.0040.00416.50
7.4.250.0040.00416.59
7.4.240.0050.00216.63
7.4.230.0000.00816.41
7.4.220.0040.01416.64
7.4.210.0070.00716.46
7.4.200.0040.00416.32
7.4.160.0000.01716.61
7.4.150.0110.00717.40
7.4.140.0110.01317.86
7.4.130.0110.00816.65
7.4.120.0080.00816.49
7.4.110.0070.01016.64
7.4.100.0110.00716.64
7.4.90.0100.00716.52
7.4.80.0090.01319.39
7.4.70.0090.00616.42
7.4.60.0000.01716.47
7.4.50.0040.00416.19
7.4.40.0080.00816.69
7.4.30.0090.00616.41
7.4.00.0060.01014.98
7.3.330.0040.00413.40
7.3.320.0030.00313.30
7.3.310.0000.00816.46
7.3.300.0000.00716.41
7.3.290.0040.01416.49
7.3.280.0070.01116.38
7.3.270.0120.01217.40
7.3.260.0140.00316.59
7.3.250.0090.00816.42
7.3.240.0060.01016.48
7.3.230.0000.01516.43
7.3.210.0040.01816.49
7.3.200.0120.00619.39
7.3.190.0060.01016.66
7.3.180.0030.01416.46
7.3.170.0080.00816.42
7.3.160.0110.01116.41
7.3.120.0070.00814.71
7.3.110.0070.01014.87
7.3.100.0070.01114.90
7.3.90.0040.01114.86
7.3.80.0080.00314.99
7.3.70.0030.00614.92
7.3.60.0060.00914.68
7.3.50.0070.00714.93
7.3.40.0070.01014.79
7.3.30.0100.00314.72
7.3.20.0070.00716.80
7.3.10.0060.00816.64
7.3.00.0080.00316.87
7.2.330.0100.01016.73
7.2.320.0070.01016.68
7.2.310.0180.00016.38
7.2.300.0100.00616.54
7.2.290.0130.00616.45
7.2.250.0120.00814.85
7.2.240.0100.01015.26
7.2.230.0000.01314.94
7.2.220.0100.00714.98
7.2.210.0000.01315.14
7.2.200.0060.00314.98
7.2.190.0060.00915.14
7.2.180.0110.00415.00
7.2.170.0040.01115.09
7.2.130.0100.00316.71
7.2.120.0000.01416.92
7.2.110.0100.00616.49
7.2.100.0100.00616.39
7.2.90.0070.00716.96
7.2.80.0030.00616.91
7.2.70.0100.00316.91
7.2.60.0030.01016.94
7.2.50.0040.00716.81
7.2.40.0070.01016.86
7.2.30.0060.00916.86
7.2.20.0070.00716.92
7.2.10.0040.01116.88
7.2.00.0090.00518.15
7.1.330.0050.00515.68
7.1.320.0070.01015.82
7.1.310.0030.00915.82
7.1.300.0030.00615.76
7.1.290.0030.00615.78
7.1.280.0030.01315.75
7.1.270.0000.01415.82
7.1.260.0060.00915.55
7.1.250.0100.00316.01
7.1.100.0080.00418.14
7.1.70.0070.00317.12
7.1.60.0140.00319.70
7.1.50.0090.01917.02
7.1.00.0030.09022.54
7.0.200.0100.00615.09
7.0.140.0030.07322.21
7.0.60.0100.08019.91
7.0.50.0030.04017.88
7.0.40.0030.08320.30
7.0.30.0230.03720.19
7.0.20.0300.07320.21
7.0.10.0170.07720.23
7.0.00.0070.07320.24
5.6.280.0070.07021.11
5.6.210.0130.05020.51
5.6.200.0030.05018.15
5.6.190.0230.06020.34
5.6.180.4130.04320.50
5.6.170.0230.03320.64
5.6.160.0070.08320.48
5.6.150.0100.07318.12
5.6.140.0070.04318.12
5.6.130.0100.05018.13
5.6.120.0070.05321.02
5.6.110.0170.06721.12
5.6.100.0100.08021.12
5.6.90.0070.08321.00
5.6.80.0170.07020.38
5.6.70.0070.05720.38
5.5.350.0100.03720.41
5.5.340.0100.07018.08
5.5.330.0030.04320.30
5.5.320.0230.04320.25
5.5.310.0270.05020.19
5.5.300.0070.08017.98
5.5.290.0070.08317.98
5.5.280.0130.04320.65
5.5.270.0030.05020.87
5.5.260.0070.03720.75
5.5.250.0100.06720.79
5.5.240.0300.06720.35
5.4.450.0270.05328.29
5.4.440.0200.05028.29
5.4.430.0300.04328.29
5.4.420.0300.04328.29
5.4.410.0330.04028.28
5.4.400.0500.03328.28
5.4.390.0300.03728.28
5.4.380.0100.05718.49
5.4.370.0200.04718.59
5.4.360.0100.05318.63
5.4.350.0200.04718.83
5.4.340.0070.06018.74
5.4.320.0070.03512.51
5.4.310.0050.03912.50
5.4.300.0020.04212.51
5.4.290.0110.03612.50
5.4.280.0040.03712.39
5.4.270.0120.04112.40
5.4.260.0080.03812.40
5.4.250.0050.04312.40
5.4.240.0040.03812.39
5.4.230.0070.04312.39
5.4.220.0050.03812.39
5.4.210.0060.03712.39
5.4.200.0060.03912.39
5.4.190.0030.04112.39
5.4.180.0040.04012.38
5.4.170.0040.04012.39
5.4.160.0040.04412.39
5.4.150.0060.03812.38
5.4.140.0090.03412.07
5.4.130.0030.03812.05
5.4.120.0050.03712.02
5.4.110.0060.03612.02
5.4.100.0040.03712.01
5.4.90.0070.03512.02
5.4.80.0070.04212.02
5.4.70.0080.04912.01
5.4.60.0120.03612.01
5.4.50.0090.03512.01
5.4.40.0060.03612.00
5.4.30.0090.04411.99
5.4.20.0080.03511.99
5.4.10.0070.03412.00
5.4.00.0040.04311.48
5.3.290.0110.03612.80
5.3.280.0060.03912.71
5.3.270.0070.03912.72
5.3.260.0090.03812.72
5.3.250.0090.03712.72
5.3.240.0070.04312.72
5.3.230.0110.03312.71
5.3.220.0080.03512.68
5.3.210.0020.04412.68
5.3.200.0040.04012.68
5.3.190.0060.03912.68
5.3.180.0080.03612.67
5.3.170.0040.04012.67
5.3.160.0070.03812.68
5.3.150.0080.04112.68
5.3.140.0100.03712.66
5.3.130.0040.05012.66
5.3.120.0100.04112.66
5.3.110.0120.04512.66
5.3.100.0120.04112.12
5.3.90.0090.05212.10
5.3.80.0080.04212.09
5.3.70.0130.03912.09
5.3.60.0130.03812.08
5.3.50.0080.04212.02
5.3.40.0080.03712.02
5.3.30.0110.04711.98
5.3.20.0040.05311.77
5.3.10.0080.04811.73
5.3.00.0060.04011.72
5.2.170.0100.0429.23
5.2.160.0050.0309.22
5.2.150.0050.0319.22
5.2.140.0070.0339.22
5.2.130.0050.0349.18
5.2.120.0030.0309.18
5.2.110.0040.0309.19
5.2.100.0070.0299.19
5.2.90.0050.0299.19
5.2.80.0110.0329.18
5.2.70.0080.0389.18
5.2.60.0080.0379.13
5.2.50.0070.0309.10
5.2.40.0060.0379.08
5.2.30.0070.0389.05
5.2.20.0060.0299.04
5.2.10.0030.0308.95
5.2.00.0060.0288.82
5.1.60.0050.0248.10
5.1.50.0060.0238.09
5.1.40.0090.0218.07
5.1.30.0070.0258.43
5.1.20.0040.0298.45
5.1.10.0050.0268.17
5.1.00.0030.0288.18
5.0.50.0030.0216.66
5.0.40.0040.0196.52
5.0.30.0030.0336.33
5.0.20.0040.0196.30
5.0.10.0020.0226.28
5.0.00.0060.0496.27
4.4.90.0050.0204.78
4.4.80.0030.0184.76
4.4.70.0040.0164.75
4.4.60.0020.0164.75
4.4.50.0030.0154.77
4.4.40.0070.0214.71
4.4.30.0050.0134.76
4.4.20.0040.0154.84
4.4.10.0030.0164.85
4.4.00.0030.0254.76
4.3.110.0030.0164.67
4.3.100.0030.0144.66
4.3.90.0010.0164.63
4.3.80.0010.0264.59
4.3.70.0020.0154.63
4.3.60.0020.0154.63
4.3.50.0030.0164.62
4.3.40.0070.0194.53
4.3.30.0010.0173.33
4.3.20.0030.0163.34
4.3.10.0020.0183.27
4.3.00.0070.01328.28

preferences:
45.41 ms | 401 KiB | 5 Q