3v4l.org

run code in 300+ PHP versions simultaneously
<?php $User = array( 'Name' => "Hans-Peterµµ", 'Contacts' => array(1, 2, 3, 4, 5, 6, 7, 42), 'Active' => 1 ); $J = json_encode(array_utf8_encode($User)); foreach ($J as &$val) { $val = preg_replace_callback('/\\\\u([0-9a-f]{4})/i', function($matches) { return mb_convert_encoding(pack('H*', $matches[1]), 'UTF-8', 'UTF-16'); }, $val);} echo $J; function array_utf8_encode($Array) { foreach($Array as &$Val) { if(is_array($Val)) { $Val = array_utf8_encode($Val); } elseif(is_string($Val)) { $Val = iconv('UTF-8', 'ASCII', $Val);//mb_convert_encoding($Val, 'UTF-8'); } } return $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)
5.4.320.0060.03812.53
5.4.310.0040.04312.52
5.4.300.0070.03812.52
5.4.290.0100.03512.52
5.4.280.0050.03612.42
5.4.270.0070.03412.42
5.4.260.0070.03712.42
5.4.250.0040.04012.42
5.4.240.0080.03412.41
5.4.230.0090.03512.41
5.4.220.0080.03612.41
5.4.210.0050.03712.41
5.4.200.0020.04312.41
5.4.190.0060.03612.41
5.4.180.0050.04512.40
5.4.170.0050.03712.41
5.4.160.0080.03612.41
5.4.150.0060.03912.40
5.4.140.0060.03812.09
5.4.130.0050.03712.07
5.4.120.0060.03412.04
5.4.110.0050.03512.04
5.4.100.0030.03712.03
5.4.90.0050.03712.04
5.4.80.0050.04312.04
5.4.70.0070.03212.04
5.4.60.0070.03712.03
5.4.50.0040.04012.03
5.4.40.0070.03612.02
5.4.30.0050.03812.02
5.4.20.0070.03212.01
5.4.10.0050.03412.01
5.4.00.0080.03311.51
5.3.290.0090.03612.80
5.3.280.0040.04012.71
5.3.270.0030.04112.73
5.3.260.0070.03712.72
5.3.250.0060.03812.72
5.3.240.0060.03612.72
5.3.230.0070.03812.71
5.3.220.0090.03512.68
5.3.210.0070.03812.68
5.3.200.0070.03412.68
5.3.190.0040.03912.67
5.3.180.0040.03712.67
5.3.170.0040.03812.67
5.3.160.0060.03612.67
5.3.150.0080.03412.67
5.3.140.0040.03712.66
5.3.130.0050.03912.66
5.3.120.0080.04312.66
5.3.110.0040.04512.66
5.3.100.0070.03512.13
5.3.90.0050.03712.11
5.3.80.0080.03412.11
5.3.70.0040.03712.10
5.3.60.0070.03612.08
5.3.50.0060.03512.03
5.3.40.0070.03312.03
5.3.30.0080.03211.99
5.3.20.0030.04111.78
5.3.10.0050.03411.73
5.3.00.0080.03311.73
5.2.170.0050.0299.19
5.2.160.0050.0289.19
5.2.150.0090.0329.19
5.2.140.0060.0289.18
5.2.130.0040.0299.14
5.2.120.0050.0299.14
5.2.110.0040.0309.15
5.2.100.0050.0289.14
5.2.90.0050.0299.14
5.2.80.0050.0309.14
5.2.70.0050.0309.14
5.2.60.0060.0399.09
5.2.50.0020.0309.06
5.2.40.0070.0259.04
5.2.30.0090.0299.02
5.2.20.0040.0299.00
5.2.10.0020.0308.93
5.2.00.0010.0318.79
5.1.60.0020.0258.07
5.1.50.0020.0268.07
5.1.40.0060.0268.05
5.1.30.0060.0238.40
5.1.20.0050.0248.42
5.1.10.0040.0258.14
5.1.00.0020.0268.15
5.0.50.0020.0216.63
5.0.40.0020.0206.49
5.0.30.0020.0326.30
5.0.20.0050.0176.27
5.0.10.0020.0206.25
5.0.00.0010.0336.24
4.4.90.0030.0154.77
4.4.80.0030.0144.76
4.4.70.0010.0174.76
4.4.60.0030.0234.76
4.4.50.0050.0184.77
4.4.40.0020.0254.71
4.4.30.0010.0174.76
4.4.20.0030.0184.85
4.4.10.0030.0154.85
4.4.00.0020.0264.75
4.3.110.0030.0144.66
4.3.100.0040.0164.67
4.3.90.0040.0174.63
4.3.80.0030.0254.58
4.3.70.0040.0124.63
4.3.60.0020.0154.63
4.3.50.0030.0164.63
4.3.40.0020.0254.54
4.3.30.0040.0173.29
4.3.20.0030.0153.27
4.3.10.0010.0173.22
4.3.00.0030.0207.38

preferences:
142.63 ms | 1394 KiB | 7 Q