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) - $time; print_r($result); 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)
7.4.00.0030.01614.86
7.3.120.0060.01314.89
7.3.110.0110.00714.80
7.3.100.0030.01314.67
7.3.90.0120.00015.04
7.3.80.0100.00315.05
7.3.70.0070.00714.88
7.3.60.0120.00314.80
7.3.50.0120.00314.72
7.3.40.0000.01414.87
7.3.30.0040.01114.75
7.3.20.0120.00316.64
7.3.10.0070.00416.66
7.3.00.0100.00316.68
7.2.250.0070.00714.77
7.2.240.0110.00714.82
7.2.230.0090.00615.13
7.2.220.0000.01415.29
7.2.210.0030.01015.34
7.2.200.0000.00915.01
7.2.190.0060.00315.16
7.2.180.0090.00615.00
7.2.170.0030.00615.14
7.2.130.0150.00016.98
7.2.120.0130.00617.03
7.2.110.0030.00716.99
7.2.100.0080.00516.68
7.2.90.0030.00916.96
7.2.80.0040.00816.60
7.2.70.0000.01316.96
7.2.60.0000.00916.91
7.2.50.0130.00316.92
7.2.40.0070.00717.02
7.2.30.0050.00816.97
7.2.20.0040.00717.01
7.2.10.0030.01016.96
7.2.00.0000.00916.76
7.1.330.0060.00615.79
7.1.320.0000.01215.90
7.1.310.0130.00315.80
7.1.300.0090.00315.84
7.1.290.0000.01115.81
7.1.280.0090.00415.67
7.1.270.0060.00615.83
7.1.260.0110.00415.86
7.1.250.0070.00415.85
7.1.70.0000.00817.00
7.1.60.0040.02119.82
7.1.50.0180.01834.86
7.1.00.0000.08022.25
7.0.200.0040.00416.69
7.0.140.0130.06322.09
7.0.100.0130.08020.02
7.0.90.0200.08320.16
7.0.80.0170.05320.01
7.0.70.0070.05719.94
7.0.60.0400.07319.93
7.0.50.0030.07720.27
7.0.40.0070.08320.03
7.0.30.0130.06720.03
7.0.20.0070.04720.18
7.0.10.0030.04020.10
7.0.00.0100.03720.09
5.6.280.0030.07721.03
5.6.250.0100.04020.61
5.6.240.0070.06320.52
5.6.230.0030.04020.51
5.6.220.0070.07020.67
5.6.210.0030.05020.44
5.6.200.0100.07721.05
5.6.190.0070.08021.14
5.6.180.0100.07721.07
5.6.170.0130.07321.09
5.6.160.0100.03721.08
5.6.150.0030.04321.14
5.6.140.0030.04321.01
5.6.130.0100.03720.92
5.6.120.0030.04320.96
5.6.110.0030.03721.07
5.6.100.0070.04321.08
5.6.90.0000.05020.93
5.6.80.0070.06020.41
5.6.70.0070.04720.35
5.6.60.0000.04320.38
5.6.50.0070.04020.43
5.6.40.0030.03320.32
5.6.30.0000.04020.45
5.6.20.0000.04320.42
5.6.10.0030.04020.44
5.6.00.0030.04020.41
5.5.380.0100.03720.46
5.5.370.0100.05320.40
5.5.360.0070.07720.44
5.5.350.0100.06320.34
5.5.340.0070.08320.84
5.5.330.0100.07320.80
5.5.320.0030.08320.89
5.5.310.0100.04020.74
5.5.300.0100.03720.89
5.5.290.0030.03320.79
5.5.280.0030.03720.77
5.5.270.0100.03720.88
5.5.260.0100.05320.90
5.5.250.0070.04020.70
5.5.240.0070.04320.20
5.5.230.0030.04020.25
5.5.220.0130.03320.25
5.5.210.0030.04020.24
5.5.200.0100.02720.18
5.5.190.0070.03720.15
5.5.180.0170.03020.27
5.5.160.0000.04320.21
5.5.150.0030.04020.15
5.5.140.0070.03020.28
5.5.130.0030.04320.21
5.5.120.0030.03720.08
5.5.110.0000.03720.26
5.5.100.0000.04020.11
5.5.90.0130.03020.17
5.5.80.0100.03020.07
5.5.70.0100.04020.15
5.5.60.0000.03720.07
5.5.50.0070.04020.09
5.5.40.0030.04320.12
5.5.30.0030.06020.11
5.5.20.0070.08319.94
5.5.10.0070.07020.00
5.5.00.0130.07020.06
5.4.450.0070.03719.33
5.4.440.0030.03719.50
5.4.430.0030.04319.36
5.4.420.0030.04019.53
5.4.410.0000.04719.14
5.4.400.0030.04019.05
5.4.390.0030.04018.90
5.4.380.0100.03019.13
5.4.370.0100.03019.13
5.4.360.0000.04719.09
5.4.350.0030.03019.20
5.4.340.0030.03718.92
5.4.320.0030.03719.14
5.4.310.0030.03719.18
5.4.300.0070.03719.05
5.4.290.0030.03719.09
5.4.280.0070.06718.88
5.4.270.0000.04019.12
5.4.260.0030.03719.09
5.4.250.0000.03319.24
5.4.240.0070.03018.90
5.4.230.0070.03719.04
5.4.220.0130.03018.86
5.4.210.0100.03319.12
5.4.200.0030.04019.22
5.4.190.0030.05018.86
5.4.180.0100.06719.14
5.4.170.0030.08319.22
5.4.160.0000.04018.86
5.4.150.0070.07319.11
5.4.140.0030.05016.48
5.4.130.0000.03716.25
5.4.120.0030.03316.45
5.4.110.0070.03316.36
5.4.100.0000.03716.28
5.4.90.0170.06716.45
5.4.80.0030.06716.38
5.4.70.0000.07016.46
5.4.60.0070.07016.33
5.4.50.0000.05716.33
5.4.40.0030.06716.53
5.4.30.0070.07016.48
5.4.20.0070.06716.32
5.4.10.0130.07016.45
5.4.00.0170.03015.87
5.3.290.0070.03714.73
5.3.280.0030.05314.53
5.3.270.0030.07714.68
5.3.260.0000.04014.72
5.3.250.0070.03314.72
5.3.240.0030.06314.63
5.3.230.0100.07314.60
5.3.220.0200.06014.50
5.3.210.0070.06314.50
5.3.200.0070.07014.70
5.3.190.0100.07314.63
5.3.180.0030.04014.66
5.3.170.0030.07314.71
5.3.160.0070.04014.64
5.3.150.0130.06714.55
5.3.140.0030.07014.48
5.3.130.0000.04714.48
5.3.120.0070.07714.61
5.3.110.0030.08014.58
5.3.100.0130.06014.11
5.3.90.0100.07014.03
5.3.80.0100.05014.01
5.3.70.0070.05013.91
5.3.60.0130.03313.92
5.3.50.0100.03014.05
5.3.40.0070.05313.93
5.3.30.0030.07314.03
5.3.20.0100.07313.65
5.3.10.0100.06713.68
5.3.00.0100.04013.71
5.2.170.0170.04711.64
5.2.160.0100.03011.64
5.2.150.0070.02711.64
5.2.140.0030.05311.64
5.2.130.0000.05711.64
5.2.120.0000.06311.64
5.2.110.0000.06311.64
5.2.100.0100.05711.64
5.2.90.0000.07011.64
5.2.80.0070.05711.64
5.2.70.0130.05311.64
5.2.60.0030.03311.64
5.2.50.0000.07011.64
5.2.40.0030.05011.64
5.2.30.0030.05311.64
5.2.20.0000.03711.64
5.2.10.0070.06011.64
5.2.00.0200.04711.64
5.1.60.0070.05011.64
5.1.50.0030.04311.64
5.1.40.0030.05311.64
5.1.30.0000.06011.64
5.1.20.0070.05711.64
5.1.10.0070.05011.64
5.1.00.0000.05711.64
5.0.50.0100.03711.64
5.0.40.0100.02711.64
5.0.30.0000.06711.64
5.0.20.0030.03711.64
5.0.10.0070.04011.64
5.0.00.0030.06711.64
4.4.90.0030.03311.64
4.4.80.0030.03311.64
4.4.70.0030.03311.64
4.4.60.0070.03011.64
4.4.50.0030.03011.64
4.4.40.0030.04711.64
4.4.30.0030.02011.64
4.4.20.0030.03011.64
4.4.10.0070.03011.64
4.4.00.0030.03011.64
4.3.110.0000.02011.64
4.3.100.0030.03011.64
4.3.90.0070.02711.64
4.3.80.0000.05311.64
4.3.70.0000.01711.64
4.3.60.0100.03011.64
4.3.50.0030.01711.64
4.3.40.0030.05011.64
4.3.30.0000.02711.64
4.3.20.0030.03711.64
4.3.10.0000.02711.64
4.3.00.0000.03711.64

preferences:
47.94 ms | 401 KiB | 5 Q