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("ASCII", "UTF-8", $Val);//mb_convert_encoding($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)
5.4.320.0050.03712.53
5.4.310.0040.03912.52
5.4.300.0030.03812.52
5.4.290.0070.03512.52
5.4.280.0030.03712.41
5.4.270.0060.04712.41
5.4.260.0040.03912.42
5.4.250.0060.03712.42
5.4.240.0040.03612.42
5.4.230.0060.03912.41
5.4.220.0060.03612.41
5.4.210.0060.03412.41
5.4.200.0050.03812.41
5.4.190.0090.03312.40
5.4.180.0040.03612.40
5.4.170.0050.04112.41
5.4.160.0080.03712.41
5.4.150.0050.03512.40
5.4.140.0080.03512.09
5.4.130.0050.03512.07
5.4.120.0100.03112.04
5.4.110.0050.04012.04
5.4.100.0070.03412.04
5.4.90.0050.03712.03
5.4.80.0060.03712.04
5.4.70.0030.03712.04
5.4.60.0030.03812.04
5.4.50.0070.03312.03
5.4.40.0040.03512.02
5.4.30.0050.04012.02
5.4.20.0030.03612.01
5.4.10.0050.03312.01
5.4.00.0070.03711.51
5.3.290.0050.04312.80
5.3.280.0030.03912.71
5.3.270.0070.04212.73
5.3.260.0040.03912.72
5.3.250.0050.04012.72
5.3.240.0050.04012.72
5.3.230.0060.03712.71
5.3.220.0060.03812.68
5.3.210.0080.04012.68
5.3.200.0060.03512.68
5.3.190.0060.03612.68
5.3.180.0100.03812.67
5.3.170.0090.03312.67
5.3.160.0060.03612.68
5.3.150.0050.03812.67
5.3.140.0040.03612.66
5.3.130.0070.04012.65
5.3.120.0050.04012.66
5.3.110.0070.03912.66
5.3.100.0070.03512.13
5.3.90.0040.03812.11
5.3.80.0080.03412.10
5.3.70.0040.03712.10
5.3.60.0080.04412.08
5.3.50.0050.04012.03
5.3.40.0080.03412.03
5.3.30.0050.04212.00
5.3.20.0070.04011.78
5.3.10.0040.03511.74
5.3.00.0060.03511.72
5.2.170.0060.0289.18
5.2.160.0050.0329.20
5.2.150.0060.0359.18
5.2.140.0070.0299.18
5.2.130.0040.0349.14
5.2.120.0060.0269.14
5.2.110.0030.0329.15
5.2.100.0030.0309.14
5.2.90.0050.0319.14
5.2.80.0030.0319.14
5.2.70.0050.0299.14
5.2.60.0040.0299.10
5.2.50.0060.0279.06
5.2.40.0050.0269.04
5.2.30.0040.0379.02
5.2.20.0050.0299.00
5.2.10.0040.0288.92
5.2.00.0050.0308.79
5.1.60.0070.0268.07
5.1.50.0040.0298.07
5.1.40.0020.0278.05
5.1.30.0050.0318.40
5.1.20.0030.0318.42
5.1.10.0070.0278.15
5.1.00.0010.0288.14
5.0.50.0060.0206.62
5.0.40.0030.0256.49
5.0.30.0030.0326.30
5.0.20.0030.0206.27
5.0.10.0030.0206.25
5.0.00.0030.0316.24
4.4.90.0040.0134.78
4.4.80.0030.0164.75
4.4.70.0030.0154.76
4.4.60.0030.0144.75
4.4.50.0010.0164.77
4.4.40.0020.0254.71
4.4.30.0020.0194.76
4.4.20.0030.0144.84
4.4.10.0030.0224.85
4.4.00.0070.0334.75
4.3.110.0040.0144.67
4.3.100.0010.0174.66
4.3.90.0010.0164.64
4.3.80.0010.0254.58
4.3.70.0020.0154.63
4.3.60.0030.0134.63
4.3.50.0040.0174.63
4.3.40.0040.0224.54
4.3.30.0030.0243.29
4.3.20.0040.0173.27
4.3.10.0030.0193.22
4.3.00.0000.02016.72

preferences:
137.1 ms | 1394 KiB | 7 Q