3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array ( 0 => array ( 'php' => 5.3, ), 1 => array ( 'php' => 5.3, ), 2 => array ( 'php' => 5.3, ), ); $loopSize = 100000; $t = microtime(true); for ($i = 0; $i < $loopSize; $i++) { $a = array_map('serialize', $a); $a = array_unique($a); $a = array_map('unserialize', $a); } echo 'serialize'; var_dump($a); echo microtime(true) - $t."\n"; $t = microtime(true); for ($i = 0; $i < $loopSize; $i++) { $a = array_map('json_encode', $a); $a = array_unique($a); $a = array_map(function($v) { return json_decode($v, true);}, $a); } echo 'json'; var_dump($a); echo microtime(true) - $t."\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)
7.4.10.0100.35714.89
7.4.00.0070.36014.83
7.3.130.0100.36314.73
7.3.120.0030.35614.82
7.3.110.0070.26215.07
7.3.100.0100.22214.77
7.3.90.0030.26714.77
7.3.80.0000.32414.82
7.3.70.0070.25614.62
7.3.60.0000.31214.84
7.3.50.0070.32914.70
7.3.40.0070.21714.73
7.3.30.0100.35914.73
7.3.20.0030.22216.75
7.3.10.0000.30116.60
7.3.00.0030.25916.75
7.2.260.0030.29115.07
7.2.250.0070.26415.00
7.2.240.0000.33015.17
7.2.230.0030.31315.27
7.2.220.0100.28715.03
7.2.210.0070.28015.12
7.2.200.0070.31615.12
7.2.190.0070.31415.04
7.2.180.0000.31115.21
7.2.170.0070.24115.00
7.2.160.0100.37915.18
7.2.150.0030.31116.94
7.2.140.0070.26417.03
7.2.130.0030.33816.98
7.2.120.0030.37916.71
7.2.110.0030.35316.98
7.2.100.0100.30216.69
7.2.90.0030.28216.99
7.2.80.0000.38116.98
7.2.70.0070.23217.07
7.2.60.0000.31517.11
7.2.50.0100.26816.93
7.2.40.0090.25917.11
7.2.30.0030.23617.14
7.2.20.0000.25016.87
7.2.10.0030.35016.80
7.2.00.0120.28518.23
7.1.330.0030.33315.53
7.1.320.0000.33615.99
7.1.310.0070.37215.95
7.1.300.0030.37315.44
7.1.290.0070.33815.85
7.1.280.0000.32915.51
7.1.270.0000.33415.82
7.1.260.0070.30715.83
7.1.250.0000.29515.90
7.1.240.0000.34315.65
7.1.230.0030.42815.80
7.1.220.0030.33315.94
7.1.210.0180.38715.75
7.1.200.0030.43715.95
7.1.190.0070.37415.79
7.1.180.0000.41915.97
7.1.170.0000.44415.68
7.1.160.0100.28515.77
7.1.150.0070.32415.82
7.1.140.0070.40515.65
7.1.130.0100.30015.84
7.1.120.0000.29515.77
7.1.110.0000.40216.00
7.1.100.0070.38315.85
7.1.90.0030.41315.81
7.1.80.0000.35315.92
7.1.70.0030.28116.49
7.1.60.0050.32017.47
7.1.50.0050.34716.44
7.1.40.0070.36915.90
7.1.30.0030.41915.84
7.1.20.0000.36915.80
7.1.10.0000.36015.59
7.1.00.0030.35319.04
7.0.330.0070.45415.30
7.0.320.0070.41215.57
7.0.310.0100.33415.53
7.0.300.0030.46415.43
7.0.290.0000.35915.34
7.0.280.0000.53315.38
7.0.270.0030.37415.59
7.0.260.0070.37615.46
7.0.250.0070.37415.56
7.0.240.0070.33015.39
7.0.230.0070.37115.42
7.0.220.0100.32115.63
7.0.210.0000.42815.29
7.0.200.0020.28416.02
7.0.190.0000.37815.54
7.0.180.0030.45615.24
7.0.170.0030.45915.31
7.0.160.0030.38415.36
7.0.150.0070.35715.31
7.0.140.0030.39318.76
7.0.130.0030.51315.52
7.0.120.0100.45315.15
7.0.110.0070.41015.50
7.0.100.0030.46215.58
7.0.90.0030.46115.32
7.0.80.0250.43217.67
7.0.70.0300.33917.80
7.0.60.0280.35717.70
7.0.50.0250.43918.00
7.0.40.0070.34316.76
7.0.30.0030.40016.60
7.0.20.0020.32116.76
7.0.10.0050.46116.68
7.0.00.0030.39316.70
5.6.400.0100.65814.73
5.6.390.0070.99514.41
5.6.380.0000.78914.70
5.6.370.0000.75214.32
5.6.360.0030.86314.64
5.6.350.0070.90214.25
5.6.340.0070.95914.32
5.6.330.0001.00114.51
5.6.320.0030.86114.27
5.6.310.0000.67614.30
5.6.300.0030.77014.46
5.6.290.0030.90814.59
5.6.280.0030.73517.76
5.6.270.0071.03414.32
5.6.260.0030.77014.05
5.6.250.0030.98114.35
5.6.240.0070.97914.44
5.6.230.0030.77017.62
5.6.220.0050.68317.66
5.6.210.0100.75017.56
5.6.200.0020.67817.60
5.6.190.0070.73617.69
5.6.180.0030.74017.83
5.6.170.0050.75817.84
5.6.160.0030.69817.65
5.6.150.0050.63517.71
5.6.140.0050.71817.84
5.6.130.0070.81817.54
5.6.120.0070.82717.70
5.6.110.0070.68717.61
5.6.100.0050.70317.76
5.6.90.0030.72217.60
5.6.80.0050.70117.40
5.6.70.0080.78117.42
5.6.60.0030.70917.49
5.6.50.0070.75617.39
5.6.40.0050.79817.25
5.6.30.0050.79717.31
5.6.20.0070.85817.49
5.6.10.0070.84417.34
5.6.00.0080.70017.19
5.5.380.0100.85614.50
5.5.370.0000.76817.35
5.5.360.0050.74017.20
5.5.350.0050.69017.36
5.5.340.0020.76617.55
5.5.330.0350.76717.62
5.5.320.0030.73717.55
5.5.310.0030.73517.69
5.5.300.0050.71917.64
5.5.290.0030.88817.69
5.5.280.0070.80017.54
5.5.270.0000.78217.29
5.5.260.0100.70717.58
5.5.250.0070.74117.39
5.5.240.0370.64517.16
5.5.230.0050.62417.21
5.5.220.0070.64017.27
5.5.210.0020.67117.22
5.5.200.0100.70217.29
5.5.190.0030.70617.14
5.5.180.0070.68917.13
5.5.170.0071.12014.09
5.5.160.0080.85017.28
5.5.150.0070.66217.24
5.5.140.0080.75117.06
5.5.130.0030.80217.20
5.5.120.0030.78017.26
5.5.110.0050.62817.34
5.5.100.0050.84017.09
5.5.90.0070.70217.26
5.5.80.0070.66617.07
5.5.70.0030.87117.20
5.5.60.0020.70117.00
5.5.50.0070.70417.15
5.5.40.0030.64617.05
5.5.30.0070.87217.05
5.5.20.0270.68217.14
5.5.10.0370.68117.01
5.5.00.0080.76317.15
5.4.450.0070.66115.07
5.4.440.0030.82715.11
5.4.430.0050.80615.13
5.4.420.0080.75715.16
5.4.410.0000.79314.99
5.4.400.0050.81915.02
5.4.390.0030.68915.15
5.4.380.0030.73314.95
5.4.370.0050.85114.78
5.4.360.0080.69014.91
5.4.350.0070.72915.14
5.4.340.0050.79714.86
5.4.330.0030.86811.04
5.4.320.0080.70715.10
5.4.310.0050.79415.01
5.4.300.0050.69515.13
5.4.290.0280.74515.14
5.4.280.0000.66915.14
5.4.270.0020.73415.10
5.4.260.0080.73515.19
5.4.250.0050.76215.01
5.4.240.0070.80514.97
5.4.230.0080.75015.02
5.4.220.0020.74015.06
5.4.210.0030.81314.88
5.4.200.0070.69414.96
5.4.190.0030.87615.00
5.4.180.0020.85715.04
5.4.170.0030.70415.05
5.4.160.0080.73315.00
5.4.150.0080.74815.16
5.4.140.0030.70513.76
5.4.130.0050.79513.78
5.4.120.0030.72813.78
5.4.110.0030.71113.72
5.4.100.0030.85913.86
5.4.90.0080.79813.81
5.4.80.0000.80313.66
5.4.70.0050.75113.77
5.4.60.0020.82513.76
5.4.50.0030.79313.77
5.4.40.0030.85313.59
5.4.30.0030.81713.73
5.4.20.0050.78413.85
5.4.10.0030.75413.73
5.4.00.0000.65113.47
5.3.290.0050.82412.58
5.3.280.0050.81312.69
5.3.270.0180.62812.60
5.3.260.0070.76312.57
5.3.250.0080.86812.70
5.3.240.0050.85412.57
5.3.230.0080.76812.55
5.3.220.0070.83012.62
5.3.210.0050.89812.53
5.3.200.0070.85312.60
5.3.190.0020.76812.66
5.3.180.0050.82112.52
5.3.170.0050.75712.63
5.3.160.0030.71712.54
5.3.150.0110.89612.66
5.3.140.0020.83412.65
5.3.130.0040.83112.68
5.3.120.0040.70112.58
5.3.110.0090.85212.46
5.3.100.0020.80112.28
5.3.90.0020.75812.39
5.3.80.0250.70712.27
5.3.70.0020.74312.30
5.3.60.0050.76312.18
5.3.50.0020.85812.29
5.3.40.0020.85912.23
5.3.30.0050.89112.25
5.3.20.0030.78712.22
5.3.10.0050.83412.15
5.3.00.0020.78912.01
5.2.170.0000.03012.34
5.2.160.0000.02712.34
5.2.150.0000.02712.34
5.2.140.0000.03012.34
5.2.130.0070.02012.34
5.2.120.0030.02312.34
5.2.110.0000.03012.34
5.2.100.0070.05712.34
5.2.90.0000.04312.34
5.2.80.0000.02712.34
5.2.70.0100.01712.34
5.2.60.0130.05012.34
5.2.50.0000.03712.34
5.2.40.0000.03312.34
5.2.30.0030.05012.34
5.2.20.0070.02712.34
5.2.10.0030.04312.34
5.2.00.0030.02312.34
5.1.60.0030.02012.34
5.1.50.0030.03312.34
5.1.40.0070.05012.34
5.1.30.0000.03712.34
5.1.20.0000.04012.34
5.1.10.0000.02312.34
5.1.00.0100.05012.34
5.0.50.0000.04312.34
5.0.40.0030.04312.34
5.0.30.0000.06712.34
5.0.20.0000.02712.34
5.0.10.0000.04012.34
5.0.00.0030.02312.34
4.4.90.0000.04012.34
4.4.80.0000.02312.34
4.4.70.0030.01312.34
4.4.60.0030.01312.34
4.4.50.0000.01312.34
4.4.40.0030.05012.34
4.4.30.0000.03012.34
4.4.20.0070.00712.34
4.4.10.0000.01712.34
4.4.00.0000.02712.34
4.3.110.0000.03712.34
4.3.100.0070.02012.34
4.3.90.0030.03312.34
4.3.80.0000.02012.34
4.3.70.0030.01012.34
4.3.60.0030.02712.34
4.3.50.0000.01312.34
4.3.40.0030.01712.34
4.3.30.0000.01312.34
4.3.20.0070.00712.34
4.3.10.0000.01312.34
4.3.00.0000.01312.34

preferences:
31.18 ms | 401 KiB | 5 Q