3v4l.org

run code in 300+ PHP versions simultaneously
<?php mb_internal_encoding('UTF-8'); $someFoo = '{ "Foo" : "Bar" }'; $asciiData = iconv(mb_detect_encoding($someFoo), 'UTF-8', $someFoo); echo mb_detect_encoding($asciiData) . "\r\n"; var_dump(json_decode($asciiData)); $data = utf8_encode($someFoo); echo mb_detect_encoding($data) . "\r\n"; var_dump(json_decode($data));

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)
5.4.310.0060.05112.49
5.4.300.0070.03612.49
5.4.290.0070.03712.49
5.4.280.0030.03812.39
5.4.270.0060.03712.39
5.4.260.0070.03612.39
5.4.250.0060.03712.39
5.4.240.0070.03512.39
5.4.230.0080.03712.38
5.4.220.0060.03712.38
5.4.210.0080.03412.38
5.4.200.0090.03412.38
5.4.190.0050.03612.38
5.4.180.0050.03612.38
5.4.170.0060.03512.39
5.4.160.0040.03712.38
5.4.150.0010.04012.38
5.4.140.0040.03812.07
5.4.130.0070.03312.05
5.4.120.0050.03612.02
5.4.110.0070.03512.02
5.4.100.0080.03312.01
5.4.90.0090.03312.02
5.4.80.0050.03812.01
5.4.70.0040.03612.01
5.4.60.0060.03512.01
5.4.50.0040.03712.00
5.4.40.0040.03512.00
5.4.30.0030.03811.99
5.4.20.0040.03611.99
5.4.10.0070.03311.99
5.4.00.0070.03411.48
5.3.280.0050.03812.71
5.3.270.0090.03612.73
5.3.260.0080.03712.72
5.3.250.0110.03312.72
5.3.240.0100.03412.72
5.3.230.0030.04212.70
5.3.220.0070.03712.68
5.3.210.0100.03412.68
5.3.200.0050.03812.68
5.3.190.0080.03612.68
5.3.180.0040.03812.68
5.3.170.0040.04012.67
5.3.160.0090.03312.67
5.3.150.0060.03712.68
5.3.140.0050.03712.66
5.3.130.0050.04012.66
5.3.120.0130.03112.66
5.3.110.0100.03412.66
5.3.100.0090.03512.12
5.3.90.0080.03412.08
5.3.80.0080.03512.07
5.3.70.0050.03712.07
5.3.60.0090.03212.06
5.3.50.0040.03812.00
5.3.40.0090.03412.00
5.3.30.0110.03311.95
5.3.20.0090.03211.73
5.3.10.0100.03011.70
5.3.00.0050.03711.68
5.2.170.0040.0319.18
5.2.160.0080.0259.18
5.2.150.0060.0309.18
5.2.140.0050.0309.17
5.2.130.0020.0319.13
5.2.120.0080.0319.13
5.2.110.0020.0349.15
5.2.100.0060.0289.14
5.2.90.0050.0329.14
5.2.80.0060.0379.14
5.2.70.0080.0279.14
5.2.60.0060.0299.09
5.2.50.0020.0329.07
5.2.40.0050.0289.04
5.2.30.0060.0289.01
5.2.20.0050.0339.00
5.2.10.0040.0288.93
5.2.00.0060.0288.78
5.1.60.0030.0258.07
5.1.50.0060.0238.07
5.1.40.0050.0248.05
5.1.30.0020.0288.40
5.1.20.0060.0338.42
5.1.10.0040.0288.14
5.1.00.0060.0248.14
5.0.50.0020.0226.63
5.0.40.0070.0166.48
5.0.30.0030.0326.29
5.0.20.0030.0196.27
5.0.10.0030.0216.24
5.0.00.0050.0286.23
4.4.90.0030.0154.78
4.4.80.0040.0144.76
4.4.70.0040.0144.76
4.4.60.0040.0144.76
4.4.50.0030.0154.77
4.4.40.0030.0274.71
4.4.30.0020.0164.76
4.4.20.0030.0154.84
4.4.10.0030.0164.85
4.4.00.0050.0234.76
4.3.110.0020.0164.67
4.3.100.0040.0134.66
4.3.90.0060.0114.63
4.3.80.0010.0264.58
4.3.70.0040.0164.63
4.3.60.0020.0174.63
4.3.50.0020.0164.63
4.3.40.0040.0234.54
4.3.30.0020.0163.29
4.3.20.0030.0153.25
4.3.10.0010.0173.22
4.3.00.0030.02015.88

preferences:
145.14 ms | 1394 KiB | 7 Q