3v4l.org

run code in 300+ PHP versions simultaneously
<?php $test = "some\xc2\xa0 text `"; var_dump(mb_convert_encoding($test, 'UTF-7', 'UTF-8')); var_dump(mb_convert_encoding($test, 'UCS-2', 'UTF-8')); var_dump(mb_detect_encoding($test, ['UTF-7', 'UTF-8', 'UCS-2']);

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)
5.4.340.0040.03712.01
5.4.320.0080.04312.50
5.4.310.0090.03612.49
5.4.300.0030.04112.50
5.4.290.0040.04012.49
5.4.280.0030.03812.39
5.4.270.0050.03812.39
5.4.260.0040.03912.39
5.4.250.0070.03712.39
5.4.240.0070.03512.39
5.4.230.0080.04212.38
5.4.220.0040.04612.38
5.4.210.0070.03412.38
5.4.200.0030.04112.38
5.4.190.0080.04112.38
5.4.180.0100.03412.38
5.4.170.0100.03312.39
5.4.160.0100.03212.38
5.4.150.0040.04312.38
5.4.140.0080.03512.07
5.4.130.0100.03512.05
5.4.120.0070.03512.01
5.4.110.0040.03712.01
5.4.100.0050.04112.01
5.4.90.0040.04012.01
5.4.80.0070.04012.01
5.4.70.0020.04112.00
5.4.60.0060.03712.00
5.4.50.0060.03712.01
5.4.40.0070.03412.00
5.4.30.0070.05311.99
5.4.20.0060.03711.99
5.4.10.0080.03311.99
5.4.00.0080.04311.48
5.3.290.0090.04812.80
5.3.280.0090.03612.71
5.3.270.0060.04112.73
5.3.260.0100.04912.72
5.3.250.0090.03712.72
5.3.240.0060.04412.72
5.3.230.0040.04112.71
5.3.220.0060.04112.68
5.3.210.0070.04612.68
5.3.200.0070.04012.68
5.3.190.0090.03512.67
5.3.180.0110.03612.68
5.3.170.0070.04012.67
5.3.160.0090.03712.67
5.3.150.0070.04112.68
5.3.140.0080.03812.66
5.3.130.0070.03712.66
5.3.120.0060.03812.66
5.3.110.0070.03712.66
5.3.100.0060.03612.12
5.3.90.0070.03412.09
5.3.80.0040.03712.08
5.3.70.0070.03412.07
5.3.60.0060.03912.06
5.3.50.0060.03612.00
5.3.40.0070.03612.00
5.3.30.0070.03411.95
5.3.20.0060.03511.73
5.3.10.0050.03711.70
5.3.00.0050.03611.68
5.2.170.0090.0379.19
5.2.160.0080.0399.18
5.2.150.0070.0309.18
5.2.140.0070.0289.18
5.2.130.0040.0309.14
5.2.120.0040.0309.14
5.2.110.0030.0309.15
5.2.100.0050.0279.14
5.2.90.0060.0309.14
5.2.80.0090.0399.14
5.2.70.0060.0349.14
5.2.60.0100.0379.09
5.2.50.0050.0449.05
5.2.40.0030.0329.04
5.2.30.0050.0379.01
5.2.20.0060.0289.00
5.2.10.0070.0268.93
5.2.00.0100.0248.78
5.1.60.0060.0228.07
5.1.50.0050.0278.07
5.1.40.0070.0228.05
5.1.30.0090.0258.40
5.1.20.0040.0308.42
5.1.10.0050.0288.14
5.1.00.0040.0268.14
5.0.50.0090.0326.63
5.0.40.0060.0436.49
5.0.30.0090.0406.30
5.0.20.0060.0336.27
5.0.10.0080.0246.25
5.0.00.0020.0376.23
4.4.90.0010.0214.78
4.4.80.0040.0144.75
4.4.70.0040.0144.75
4.4.60.0030.0174.76
4.4.50.0060.0124.77
4.4.40.0030.0254.71
4.4.30.0020.0164.76
4.4.20.0030.0154.84
4.4.10.0030.0214.85
4.4.00.0020.0244.76
4.3.110.0040.0144.67
4.3.100.0040.0184.67
4.3.90.0020.0164.64
4.3.80.0030.0244.58
4.3.70.0030.0184.63
4.3.60.0030.0174.62
4.3.50.0040.0184.63
4.3.40.0020.0254.54
4.3.30.0030.0163.28
4.3.20.0020.0193.26
4.3.10.0030.0153.23
4.3.00.0100.01013.37

preferences:
141.57 ms | 1386 KiB | 7 Q