3v4l.org

run code in 300+ PHP versions simultaneously
<?php /** * @deprecated */ function flipA(&$arr) { for ($i = 0; $i < count($arr); $i++) { $tmp = $arr[$i]; $arr[$i] = $arr[count($arr) - $i - 1]; $arr[count($arr) - $i - 1] = $tmp; } return $arr; } $arr = [1, 2, 3, 4, 5]; var_dump(flipA($arr)); /** * Flip array function (new) * @param array $arr * @return array */ function flipArray(array $arr): array { $arrayLength = count($arr); if(!$arrayLength) { return []; } for ($i = 0; $i < $arrayLength / 2; $i++) { swapArrayElements($arr, $i, $arrayLength - $i - 1); } return $arr; } /** * Swap 2 array elements * @param array $arr * @param int $i - index of first element * @param int $j - index of second element */ function swapArrayElements(&$arr, $i, $j) { $tmp = $arr[$i]; $arr[$i] = $arr[$j]; $arr[$j] = $tmp; } $arr2 = [1, 2, 3, 4, 5]; var_dump(flipArray($arr2));

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)
8.5.00.0090.00820.15
8.4.150.0020.00014.05
8.4.140.0120.01117.75
8.4.130.0070.00217.89
8.4.120.0120.00522.17
8.4.110.0150.00622.38
8.4.100.0120.01017.70
8.4.90.0130.00622.50
8.4.80.0100.00920.45
8.4.70.0120.00818.15
8.4.60.0050.00418.81
8.4.50.0140.00720.47
8.4.40.0150.00417.81
8.4.30.0070.01321.95
8.4.20.0130.00722.25
8.4.10.0080.00023.89
8.3.280.0130.00618.54
8.3.270.0150.00516.49
8.3.260.0120.00816.46
8.3.250.0090.01020.75
8.3.240.0140.00616.54
8.3.230.0130.00616.63
8.3.220.0060.00218.88
8.3.210.0160.00516.71
8.3.200.0050.00316.81
8.3.190.0060.00517.20
8.3.180.0160.00317.08
8.3.170.0120.00618.80
8.3.160.0070.00017.16
8.3.150.0060.00917.36
8.3.140.0000.00816.62
8.3.130.0110.01118.22
8.3.120.0060.00318.89
8.3.110.0140.00420.94
8.3.100.0090.00016.54
8.3.90.0160.00326.77
8.3.80.0060.00318.30
8.3.70.0040.01116.88
8.3.60.0070.01018.30
8.3.50.0070.01118.54
8.3.40.0110.00421.79
8.3.30.0140.00019.17
8.3.20.0040.00424.18
8.3.10.0050.00324.66
8.3.00.0040.00426.16
8.2.290.0090.01020.67
8.2.280.0110.00818.26
8.2.270.0070.01117.26
8.2.260.0140.00316.74
8.2.250.0000.00818.55
8.2.240.0090.00017.17
8.2.230.0070.00322.58
8.2.220.0060.00624.06
8.2.210.0040.00426.77
8.2.200.0030.00618.41
8.2.190.0180.00018.29
8.2.180.0070.00716.50
8.2.170.0110.00419.08
8.2.160.0100.00322.96
8.2.150.0040.00425.66
8.2.140.0070.00724.66
8.2.130.0040.00426.16
8.2.120.0040.00817.80
8.2.110.0070.00419.27
8.2.100.0070.00717.72
8.2.90.0240.00717.46
8.2.80.0270.00317.50
8.2.70.0290.00317.50
8.2.60.0250.00517.50
8.2.50.0260.00617.50
8.2.40.0180.00917.75
8.2.30.0280.00017.50
8.2.20.0200.00717.50
8.2.10.0190.00817.50
8.2.00.0200.00717.38
8.1.330.0100.00922.21
8.1.320.0150.00516.21
8.1.310.0060.00316.95
8.1.300.0060.00319.98
8.1.290.0030.00630.84
8.1.280.0140.00725.92
8.1.270.0080.00024.66
8.1.260.0040.00426.35
8.1.250.0060.01228.09
8.1.240.0030.00622.52
8.1.230.0090.00322.67
8.1.220.0260.00017.25
8.1.210.0230.00917.13
8.1.200.0250.00417.10
8.1.190.0290.00617.13
8.1.180.0260.00317.00
8.1.170.0180.00917.13
8.1.160.0190.01017.13
8.1.150.0230.00617.25
8.1.140.0150.01517.00
8.1.130.0150.00019.13
8.1.120.0390.00017.09
8.1.110.0240.00317.13
8.1.100.0200.00717.38
8.1.90.0240.00317.47
8.1.80.0180.00917.25
8.1.70.0240.00417.25
8.1.60.0190.00917.38
8.1.50.0220.00617.34
8.1.40.0240.00317.63
8.1.30.0210.00717.49
8.1.20.0190.00817.25
8.1.10.0270.00017.47
8.1.00.0250.00317.25
8.0.300.0220.00416.75
8.0.290.0220.00516.75
8.0.280.0250.00316.63
8.0.270.0220.00616.37
8.0.260.0180.00916.63
8.0.250.0180.01116.63
8.0.240.0260.00316.63
8.0.230.0280.00016.74
8.0.220.0210.00716.62
8.0.210.0280.00216.38
8.0.200.0260.00316.37
8.0.190.0250.00316.62
8.0.180.0250.00316.49
8.0.170.0150.01016.63
8.0.160.0180.00716.63
8.0.150.0180.00916.60
8.0.140.0290.00016.62
8.0.130.0440.00316.63
8.0.120.0200.01016.63
8.0.110.0210.00616.37
8.0.100.0270.00316.37
8.0.90.0240.00316.74
8.0.80.0250.00416.62
8.0.70.0200.00816.37
8.0.60.0250.00316.50
8.0.50.0210.00616.63
8.0.30.0240.00316.38
8.0.20.0240.00416.63
8.0.10.0200.00716.59

preferences:
28.05 ms | 403 KiB | 5 Q