3v4l.org

run code in 300+ PHP versions simultaneously
<?php function reduceMultidimensionalArraysToOneDimension(array $messages, $preffix) { $result = array(); foreach ($messages as $field => $msg) { if (is_array($msg)) { $result = array_merge($result, reduceMultidimensionalArraysToOneDimension($msg, $preffix . $field . '_')); } else { $result[$preffix . $field] = $msg; } } return $result; } $messages = array( 'second1' => array( 'm1' => 'lorem ipusum', 'third1' => array( 'm1' => 'lorem ipusum', 'm2' => 'lorem ipusum', ), 'm2' => 'lorem ipusum', 'm3' => 'lorem ipusum', 'third2' => array( 'm1' => 'lorem ipusum', 'm2' => 'lorem ipusum', ), 'm4' => 'lorem ipusum', ), 'm1' => 'lorem ipusum', 'second2' => array( 'm1' => 'lorem ipusum', 'third1' => array( 'm1' => 'lorem ipusum', 'm2' => 'lorem ipusum', ), 'm2' => 'lorem ipusum', 'm3' => 'lorem ipusum', 'third2' => array( 'm1' => 'lorem ipusum', 'm2' => 'lorem ipusum', ), 'm4' => 'lorem ipusum', ), 'm2' => 'lorem ipusum', ); echo "Starting array_merge\n"; $time = microtime(true); $result = reduceMultidimensionalArraysToOneDimension($messages, 'preffix_'); $time = microtime(true) - $time; echo 'array_merge() took ' . $time . " seconds\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)
7.1.70.0000.00917.10
7.1.60.0140.01019.82
7.1.50.0180.01834.95
7.1.00.0000.08022.28
7.0.200.0000.00716.89
7.0.140.0000.07722.18
7.0.60.0070.08720.03
7.0.50.0030.04317.93
7.0.40.0200.07720.10
7.0.30.0400.06320.12
7.0.20.0200.08020.09
7.0.10.0100.03720.25
7.0.00.0170.04720.09
5.6.280.0070.07020.96
5.6.210.0030.04720.57
5.6.200.0100.03718.16
5.6.190.0100.05020.39
5.6.180.0600.06320.39
5.6.170.0370.04720.55
5.6.160.0070.08720.46
5.6.150.0100.08018.15
5.6.140.0130.06318.21
5.6.130.0030.08318.28
5.6.120.0170.07721.15
5.6.110.0100.06721.05
5.6.100.0030.05321.02
5.6.90.0130.06020.98
5.6.80.0070.08020.41
5.5.350.0170.08320.41
5.5.340.0070.03318.01
5.5.330.0070.05720.40
5.5.320.0270.06320.24
5.5.310.0270.08320.23
5.5.300.0030.08717.94
5.5.290.0070.04317.98
5.5.280.0030.06320.77
5.5.270.0030.04020.76
5.5.260.0170.07320.88
5.5.250.0070.08020.62
5.5.240.0000.06720.16
5.4.450.0530.05319.45
5.4.440.0570.06019.50
5.4.430.0200.04319.46
5.4.420.0200.05319.41
5.4.410.0100.05318.73
5.4.400.0130.05318.84
5.4.390.0130.06318.63
5.4.380.0600.07318.73
5.4.370.0130.05318.57
5.4.360.0130.05318.84
5.4.350.0230.04318.58
5.4.340.0070.06018.54
5.4.320.0100.04212.52
5.4.310.0100.03812.52
5.4.300.0030.03912.52
5.4.290.0080.04512.52
5.4.280.0060.03612.41
5.4.270.0070.03512.38
5.4.260.0050.03912.38
5.4.250.0050.04412.38
5.4.240.0040.03912.38
5.4.230.0070.04612.37
5.4.220.0070.04212.38
5.4.210.0050.03712.37
5.4.200.0050.03912.37
5.4.190.0050.04412.37
5.4.180.0070.04112.37
5.4.170.0090.03612.38
5.4.160.0030.04112.38
5.4.150.0060.03912.37
5.4.140.0080.04012.05
5.4.130.0030.04012.04
5.4.120.0060.03712.00
5.4.110.0040.03912.00
5.4.100.0090.03512.00
5.4.90.0080.03812.00
5.4.80.0070.03912.00
5.4.70.0070.03911.99
5.4.60.0100.03312.00
5.4.50.0070.03611.99
5.4.40.0080.04811.98
5.4.30.0050.03911.98
5.4.20.0050.04111.97
5.4.10.0100.04111.97
5.4.00.0070.04211.47
5.3.290.0070.04212.80
5.3.280.0100.05212.71
5.3.270.0120.05212.73
5.3.260.0050.05612.72
5.3.250.0080.05112.72
5.3.240.0090.04912.72
5.3.230.0060.03912.71
5.3.220.0080.04512.68
5.3.210.0090.05112.68
5.3.200.0070.04612.68
5.3.190.0100.04712.68
5.3.180.0030.05112.67
5.3.170.0040.03912.67
5.3.160.0060.03812.67
5.3.150.0080.04012.67
5.3.140.0110.03312.66
5.3.130.0060.04112.66
5.3.120.0070.03712.66
5.3.110.0090.03712.66
5.3.100.0040.03912.12
5.3.90.0040.03912.09
5.3.80.0040.03812.08
5.3.70.0060.03612.08
5.3.60.0070.03512.06
5.3.50.0050.03912.00
5.3.40.0040.03812.00
5.3.30.0070.03411.97
5.3.20.0030.03811.75
5.3.10.0060.03411.72
5.3.00.0090.03311.70
5.2.170.0050.0319.21
5.2.160.0020.0329.20
5.2.150.0030.0339.21
5.2.140.0080.0289.20
5.2.130.0040.0309.16
5.2.120.0040.0299.16
5.2.110.0050.0299.16
5.2.100.0050.0289.17
5.2.90.0080.0269.17
5.2.80.0040.0319.16
5.2.70.0080.0269.16
5.2.60.0040.0319.11
5.2.50.0030.0319.09
5.2.40.0020.0319.06
5.2.30.0040.0309.04
5.2.20.0050.0299.03
5.2.10.0030.0298.95
5.2.00.0040.0298.80
5.1.60.0040.0248.09
5.1.50.0050.0248.09
5.1.40.0020.0268.07
5.1.30.0020.0288.42
5.1.20.0040.0278.45
5.1.10.0020.0298.17
5.1.00.0070.0238.16
5.0.50.0010.0236.61
5.0.40.0020.0216.46
5.0.30.0040.0306.28
5.0.20.0030.0216.25
5.0.10.0050.0226.22
5.0.00.0030.0356.22
4.4.90.0040.0144.78
4.4.80.0040.0144.75
4.4.70.0030.0154.75
4.4.60.0030.0154.75
4.4.50.0050.0134.77
4.4.40.0020.0264.70
4.4.30.0030.0154.76
4.4.20.0010.0174.84
4.4.10.0010.0174.85
4.4.00.0010.0264.76
4.3.110.0040.0144.66
4.3.100.0010.0164.66
4.3.90.0020.0154.64
4.3.80.0030.0234.59
4.3.70.0070.0144.63
4.3.60.0030.0174.62
4.3.50.0050.0154.63
4.3.40.0010.0294.54
4.3.30.0020.0153.29
4.3.20.0010.0173.27
4.3.10.0030.0153.23
4.3.00.0030.0236.99

preferences:
40.08 ms | 401 KiB | 5 Q