3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array(1,2,3,4,5,6,7,8,9); function walk($a, $index = 0){ if (count($a) == $index + 1) { echo($a[$index]-9); } else { echo($a[$index]-9); walk($a, $index + 1); } } walk($array);

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)
8.3.60.0100.00316.38
8.3.50.0130.00616.47
8.3.40.0140.00718.67
8.3.30.0150.00418.84
8.3.20.0000.00818.78
8.3.10.0030.00620.48
8.3.00.0080.00019.38
8.2.180.0100.01316.36
8.2.170.0140.00722.96
8.2.160.0100.00321.20
8.2.150.0070.00024.18
8.2.140.0000.00724.66
8.2.130.0040.00426.16
8.2.120.0070.00319.36
8.2.110.0090.00019.33
8.2.100.0040.00817.72
8.2.90.0100.00019.22
8.2.80.0000.00719.28
8.2.70.0090.00017.75
8.2.60.0000.00817.93
8.2.50.0030.00618.07
8.2.40.0000.00818.16
8.2.30.0050.00318.14
8.2.20.0030.00617.78
8.2.10.0040.00417.65
8.2.00.0040.00417.73
8.1.280.0070.01025.92
8.1.270.0050.00324.66
8.1.260.0050.00326.35
8.1.250.0030.00628.09
8.1.240.0050.00523.83
8.1.230.0030.00720.98
8.1.220.0040.00417.74
8.1.210.0000.00818.99
8.1.200.0040.00417.23
8.1.190.0030.00617.41
8.1.180.0090.00018.10
8.1.170.0040.00418.91
8.1.160.0040.00418.86
8.1.150.0040.00418.64
8.1.140.0070.00017.50
8.1.130.0080.00017.87
8.1.120.0040.00417.38
8.1.110.0040.00417.50
8.1.100.0040.00417.48
8.1.90.0040.00317.53
8.1.80.0070.00017.42
8.1.70.0000.00817.39
8.1.60.0060.00317.61
8.1.50.0000.00717.29
8.1.40.0000.00817.41
8.1.30.0020.00517.66
8.1.20.0000.00717.64
8.1.10.0040.00417.58
8.1.00.0030.00617.53
8.0.300.0020.00519.98
8.0.290.0040.00416.75
8.0.280.0030.00318.45
8.0.270.0030.00317.11
8.0.260.0030.00316.74
8.0.250.0050.00316.99
8.0.240.0000.00716.91
8.0.230.0050.00316.88
8.0.220.0000.00816.82
8.0.210.0000.00716.88
8.0.200.0070.00016.78
8.0.190.0000.00816.91
8.0.180.0070.00016.75
8.0.170.0040.00416.91
8.0.160.0040.00416.84
8.0.150.0000.00816.92
8.0.140.0000.00816.88
8.0.130.0060.00013.25
8.0.120.0030.00716.86
8.0.110.0040.00416.85
8.0.100.0000.00716.84
8.0.90.0050.00216.79
8.0.80.0110.00616.88
8.0.70.0030.00516.96
8.0.60.0040.00416.77
8.0.50.0030.00516.95
8.0.30.0120.01417.23
8.0.20.0190.01217.13
8.0.10.0040.00417.00
8.0.00.0100.00816.72
7.4.330.0000.00513.05
7.4.320.0000.00716.37
7.4.300.0090.00016.45
7.4.290.0000.00716.50
7.4.280.0000.00816.60
7.4.270.0000.00816.58
7.4.260.0050.00013.24
7.4.250.0050.00216.45
7.4.240.0000.00716.53
7.4.230.0030.00316.41
7.4.220.0110.01016.38
7.4.210.0100.00716.54
7.4.200.0000.00816.55
7.4.190.0000.00716.65
7.4.160.0120.00916.66
7.4.150.0140.00316.58
7.4.140.0090.01116.37
7.4.130.0120.00716.52
7.4.120.0120.00416.46
7.4.110.0080.00816.63
7.4.100.0100.00616.50
7.4.90.0030.01416.53
7.4.80.0160.00619.39
7.4.70.0100.01016.41
7.4.60.0090.00616.32
7.4.50.0000.00916.58
7.4.40.0040.00816.39
7.4.30.0100.00616.66
7.4.00.0070.00414.99
7.3.330.0000.00613.14
7.3.320.0000.00513.27
7.3.310.0070.00016.20
7.3.300.0070.00016.18
7.3.290.0110.00416.32
7.3.280.0050.00916.28
7.3.270.0030.01616.34
7.3.260.0120.00816.44
7.3.250.0100.00816.57
7.3.240.0090.00616.37
7.3.230.0130.01016.59
7.3.210.0030.01616.36
7.3.200.0090.00916.59
7.3.190.0040.01316.23
7.3.180.0040.01216.43
7.3.170.0080.00816.32
7.3.160.0090.00716.44
7.3.120.0070.01014.89
7.2.330.0110.00716.49
7.2.320.0100.00716.77
7.2.310.0090.00916.87
7.2.300.0160.00616.56
7.2.290.0110.00716.58
7.2.00.0040.01119.49
7.1.100.0620.01015.16
7.1.70.0070.00317.21
7.1.60.0000.01016.95
7.1.50.0040.01817.00
7.1.00.0030.07322.42
7.0.200.0040.01116.54
7.0.140.0130.06321.96
7.0.120.0030.07322.01
7.0.60.0030.04319.91
7.0.50.0070.08017.86
7.0.40.0100.03719.96
7.0.30.0300.04020.06
7.0.20.0270.08320.45
7.0.10.0330.07320.19
7.0.00.0100.08320.33
5.6.280.0030.07320.77
5.6.210.0070.07320.77
5.6.200.0130.03018.25
5.6.190.0130.08020.43
5.6.180.0230.05720.47
5.6.170.0130.04720.44
5.6.160.0000.04720.47
5.6.150.0100.05718.14
5.6.140.0070.06318.27
5.6.130.0070.05018.28
5.6.120.0100.03720.98
5.6.110.0230.05320.90
5.6.100.0070.09021.09
5.6.90.0130.07321.02
5.6.80.0130.05320.28
5.5.350.0000.03720.45
5.5.340.0030.06717.95
5.5.330.0070.03720.29
5.5.320.0200.04320.34
5.5.310.0130.04320.32
5.5.300.0070.03718.08
5.5.290.0070.08717.98
5.5.280.0200.07320.76
5.5.270.0130.06020.77
5.5.260.0070.08720.65
5.5.250.0130.05320.71
5.5.240.0130.07320.26
5.4.450.0000.05319.60
5.4.440.0000.08319.32
5.4.430.0130.05019.24
5.4.420.0070.08019.16
5.4.410.0200.06319.43
5.4.400.0070.03719.25
5.4.390.0030.04319.24
5.4.380.0030.05719.15
5.4.370.0100.07718.87
5.4.360.0070.07019.20
5.4.350.0030.07719.14
5.4.340.0070.04719.14
5.4.320.0030.04718.86
5.4.310.0030.03719.12
5.4.300.0000.04719.16
5.4.290.0030.03718.87
5.4.280.0000.04319.15
5.4.270.0030.03718.84
5.4.260.0030.03719.25
5.4.250.0030.04719.11
5.4.240.0070.03318.85
5.4.230.0070.04019.14
5.4.220.0070.03319.14
5.4.210.0070.03719.24
5.4.200.0030.03719.11
5.4.190.0100.03019.08
5.4.180.0070.03318.99
5.4.170.0000.04018.84
5.4.160.0030.04319.17
5.4.150.0000.04019.22
5.4.140.0000.03716.54
5.4.130.0070.03316.45
5.4.120.0130.02316.36
5.4.110.0000.03716.28
5.4.100.0000.03716.41
5.4.90.0030.03316.66
5.4.80.0030.04316.27
5.4.70.0000.03716.27
5.4.60.0000.03716.43
5.4.50.0000.03716.54
5.4.40.0070.03016.43
5.4.30.0030.03316.52
5.4.20.0030.03716.27
5.4.10.0100.04716.31
5.4.00.0070.04015.86
5.3.290.0000.04314.67
5.3.280.0030.04714.66
5.3.270.0030.03714.76
5.3.260.0130.03014.52
5.3.250.0030.03714.63
5.3.240.0070.03314.61
5.3.230.0070.03314.48
5.3.220.0030.03714.55
5.3.210.0000.04714.48
5.3.200.0000.04014.57
5.3.190.0030.03714.48
5.3.180.0070.03014.72
5.3.170.0000.04014.71
5.3.160.0070.03714.59
5.3.150.0070.03314.45
5.3.140.0070.03314.48
5.3.130.0100.03314.45
5.3.120.0000.05014.61
5.3.110.0130.03014.70
5.3.100.0070.07014.11
5.3.90.0070.06714.18
5.3.80.0030.07314.07
5.3.70.0030.08314.09
5.3.60.0070.07314.07
5.3.50.0070.04013.95
5.3.40.0030.04014.01
5.3.30.0070.07013.91
5.3.20.0030.05713.58
5.3.10.0070.06713.70
5.3.00.0070.05713.71
5.2.170.0000.04311.16
5.2.160.0030.03011.16
5.2.150.0070.03011.30
5.2.140.0000.06011.19
5.2.130.0070.06011.00
5.2.120.0100.05711.11
5.2.110.0000.03311.05
5.2.100.0030.04311.03
5.2.90.0030.07011.05
5.2.80.0030.03011.06
5.2.70.0170.02011.15
5.2.60.0070.03010.98
5.2.50.0030.05710.98
5.2.40.0030.06010.99
5.2.30.0100.05711.03
5.2.20.0000.04311.11
5.2.10.0070.03310.83
5.2.00.0000.03710.60
5.1.60.0000.02710.02
5.1.50.0030.03710.01
5.1.40.0000.03310.08
5.1.30.0000.06310.26
5.1.20.0030.02710.49
5.1.10.0130.02710.07
5.1.00.0070.0509.98
5.0.50.0000.0238.61
5.0.40.0030.0378.43
5.0.30.0000.0378.25
5.0.20.0030.0238.17
5.0.10.0030.0338.19
5.0.00.0000.0678.15
4.4.90.0030.0177.98
4.4.80.0030.0337.98
4.4.70.0030.0377.98
4.4.60.0030.0307.98
4.4.50.0000.0207.98
4.4.40.0030.0537.98
4.4.30.0030.0177.98
4.4.20.0130.0107.98
4.4.10.0000.0377.98
4.4.00.0000.0277.98
4.3.110.0030.0377.98
4.3.100.0000.0177.98
4.3.90.0030.0207.98
4.3.80.0030.0537.98
4.3.70.0000.0377.98
4.3.60.0070.0337.98
4.3.50.0030.0237.98
4.3.40.0000.0307.98
4.3.30.0070.0137.98
4.3.20.0000.0207.98
4.3.10.0030.0337.98
4.3.00.0030.0237.98

preferences:
45.96 ms | 401 KiB | 5 Q