3v4l.org

run code in 300+ PHP versions simultaneously
<?php function swapOutermost(&$a, $i = 0) { $last = count($a) - 1 - $i; if ($i < $last) { [$a[$i], $a[$last]] = [$a[$last], $a[$i]]; swapOutermost($a, ++$i); } } $array = [1, 2, 3, 4, 5, 6, 7]; swapOutermost($array); var_export($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)
8.4.120.0070.00320.64
8.4.110.0150.00620.65
8.4.100.0160.00517.58
8.4.90.0090.01018.46
8.4.80.0110.00417.84
8.4.70.0130.00717.79
8.4.60.0140.00718.84
8.4.50.0100.00818.70
8.4.40.0050.00517.72
8.4.30.0040.00420.64
8.4.20.0100.01017.74
8.4.10.0050.00519.55
8.3.250.0100.00818.84
8.3.240.0120.00716.71
8.3.230.0120.00716.58
8.3.220.0060.00417.33
8.3.210.0120.00616.74
8.3.200.0050.00416.45
8.3.190.0020.00617.24
8.3.180.0090.01116.74
8.3.170.0040.00418.93
8.3.160.0090.00917.12
8.3.150.0070.01118.79
8.3.140.0120.00617.25
8.3.130.0090.00018.39
8.3.120.0030.00518.75
8.3.110.0080.00020.94
8.3.100.0090.00016.64
8.3.90.0000.00816.49
8.3.80.0090.00016.63
8.3.70.0090.01316.63
8.3.60.0120.00918.15
8.3.50.0060.00923.59
8.3.40.0070.00718.79
8.3.30.0000.01518.54
8.3.20.0070.00020.73
8.3.10.0000.00821.82
8.3.00.0030.00517.93
8.2.290.0120.00620.45
8.2.280.0090.00918.21
8.2.270.0110.00719.04
8.2.260.0080.00018.45
8.2.250.0040.00416.48
8.2.240.0040.01118.71
8.2.230.0050.00322.58
8.2.220.0100.00024.06
8.2.210.0040.01426.77
8.2.200.0080.00416.60
8.2.190.0080.00616.58
8.2.180.0090.01218.42
8.2.170.0070.00722.96
8.2.160.0110.00421.02
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0080.00026.16
8.2.120.0000.00826.16
8.2.110.0100.00021.96
8.2.100.0080.00317.72
8.2.90.0000.00817.91
8.2.80.0030.00519.16
8.2.70.0030.00517.93
8.2.60.0030.00618.09
8.2.50.0000.00818.10
8.2.40.0000.00719.48
8.2.30.0040.00419.19
8.2.20.0040.00417.99
8.2.10.0000.00819.36
8.2.00.0070.00019.36
8.1.330.0100.00821.80
8.1.320.0130.00716.22
8.1.310.0140.00418.21
8.1.300.0000.00917.84
8.1.290.0030.00630.84
8.1.280.0140.00725.92
8.1.270.0080.00020.50
8.1.260.0070.01126.35
8.1.250.0000.00728.09
8.1.240.0040.00422.14
8.1.230.0000.01220.88
8.1.220.0040.00417.79
8.1.210.0030.00618.77
8.1.200.0030.00617.47
8.1.190.0080.00017.13
8.1.180.0040.00419.10
8.1.170.0040.00418.61
8.1.160.0040.00418.88
8.1.150.0060.00318.79
8.1.140.0030.00518.83
8.1.130.0000.00817.45
8.1.120.0050.00317.51
8.1.110.0000.00817.34
8.1.100.0080.00017.45
8.1.90.0000.00717.44
8.1.80.0040.00417.47
8.1.70.0020.00517.36
8.1.60.0070.00417.59
8.1.50.0040.00417.54
8.1.40.0000.00817.42
8.1.30.0070.00017.60
8.1.20.0040.00417.54
8.1.10.0030.00517.50
8.1.00.0000.00717.57
8.0.300.0090.00020.16
8.0.290.0050.00316.75
8.0.280.0040.00318.44
8.0.270.0000.00716.86
8.0.260.0060.00016.75
8.0.250.0070.00016.95
8.0.240.0030.00616.98
8.0.230.0070.00016.86
8.0.220.0000.00816.87
8.0.210.0040.00416.82
8.0.200.0000.00616.88
8.0.190.0040.00416.86
8.0.180.0060.00316.94
8.0.170.0050.00316.91
8.0.160.0000.00716.87
8.0.150.0000.00816.84
8.0.140.0050.00216.91
8.0.130.0000.00613.32
8.0.120.0000.00716.79
8.0.110.0080.00016.77
8.0.100.0040.00316.80
8.0.90.0030.00616.69
8.0.80.0050.01516.85
8.0.70.0040.00416.79
8.0.60.0040.00416.77
8.0.50.0000.00716.92
8.0.30.0090.00917.09
8.0.20.0170.00417.00
8.0.10.0040.00416.87
8.0.00.0090.00917.00
7.4.330.0060.00016.66
7.4.320.0030.00316.59
7.4.300.0000.00816.53
7.4.290.0070.00016.50
7.4.280.0050.00316.61
7.4.270.0000.00816.59
7.4.260.0030.00313.29
7.4.250.0070.00016.46
7.4.240.0030.00316.59
7.4.230.0040.00416.50
7.4.220.0020.00516.54
7.4.210.0110.00616.55
7.4.200.0070.00016.41
7.4.130.0110.00816.51
7.4.120.0090.00916.55
7.4.110.0070.01316.56
7.4.100.0130.00316.46
7.4.90.0090.01016.46
7.4.80.0130.01019.39
7.4.70.0030.01516.52
7.4.60.0060.01216.53
7.4.50.0040.01116.36
7.4.40.0110.00716.62
7.4.20.0160.00416.52
7.4.10.0180.00316.29
7.4.00.0100.01316.63
7.3.330.0000.00716.25
7.3.320.0000.00513.40
7.3.310.0070.00016.26
7.3.300.0000.00716.36
7.3.290.0060.00916.35
7.3.280.0090.00616.38
7.3.260.0100.00716.22
7.3.240.0060.01216.58
7.3.230.0200.00316.60
7.3.210.0090.00616.43
7.3.200.0140.00616.61
7.3.190.0100.00716.49
7.3.180.0050.01116.43
7.3.170.0060.01016.41
7.3.160.0060.01516.43
7.3.140.0110.00716.32
7.3.130.0100.00716.21
7.3.120.0170.00816.35
7.3.110.0100.01016.57
7.3.100.0000.01816.26
7.3.90.0060.01616.64
7.3.80.0110.00716.45
7.3.70.0040.01816.48
7.3.60.0080.01116.49
7.3.50.0120.01016.44
7.3.40.0130.01016.40
7.3.30.0100.01316.27
7.3.20.0080.01516.33
7.3.10.0170.00616.47
7.3.00.0100.01616.45
7.2.330.0110.01416.77
7.2.320.0090.00916.38
7.2.310.0080.00816.75
7.2.300.0150.00216.61
7.2.290.0040.01116.70
7.2.270.0060.01816.39
7.2.260.0140.00916.75
7.2.250.0100.01316.66
7.2.240.0150.00716.75
7.2.230.0110.00916.77
7.2.220.0090.01116.51
7.2.210.0110.01116.33
7.2.200.0090.01116.45
7.2.190.0120.00916.59
7.2.180.0050.01416.55
7.2.170.0150.01516.48
7.2.160.0120.01216.57
7.2.150.0190.01216.66
7.2.140.0160.01216.70
7.2.130.0200.00816.72
7.2.120.0120.01516.62
7.2.110.0150.00716.75
7.2.100.0120.01216.64
7.2.90.0030.02116.54
7.2.80.0110.00816.55
7.2.70.0170.00316.61
7.2.60.0040.01516.54
7.2.50.0130.00616.52
7.2.40.0150.00816.63
7.2.30.0090.01516.76
7.2.20.0100.01616.67
7.2.10.0100.01716.68
7.2.00.0080.01116.59

preferences:
120.29 ms | 403 KiB | 5 Q