3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'V&#xe4;xj&#xf6;'; $b = utf8_encode($a); echo $b.'

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)
5.4.250.0070.04012.38
5.4.240.0060.04012.38
5.4.230.0070.03712.37
5.4.220.0050.03912.37
5.4.210.0060.03512.37
5.4.200.0060.04012.37
5.4.190.0080.03912.37
5.4.180.0050.04112.37
5.4.170.0070.03712.38
5.4.160.0060.03612.37
5.4.150.0070.03712.36
5.4.140.0090.03512.06
5.4.130.0060.03612.04
5.4.120.0070.03712.00
5.4.110.0050.03612.00
5.4.100.0070.03512.00
5.4.90.0060.03812.00
5.4.80.0060.03912.00
5.4.70.0070.04012.00
5.4.60.0070.04112.00
5.4.50.0080.03812.00
5.4.40.0060.03911.99
5.4.30.0070.03511.98
5.4.20.0060.03911.98
5.4.10.0090.04111.98
5.4.00.0080.04611.48
5.3.280.0070.04512.71
5.3.270.0080.04012.72
5.3.260.0090.04212.72
5.3.250.0080.04112.72
5.3.240.0060.04212.72
5.3.230.0090.04212.71
5.3.220.0080.03812.68
5.3.210.0090.04012.68
5.3.200.0070.03812.68
5.3.190.0070.04112.68
5.3.180.0080.04012.67
5.3.170.0060.04012.67
5.3.160.0060.03812.67
5.3.150.0060.04212.67
5.3.140.0080.03912.66
5.3.130.0080.03912.66
5.3.120.0090.04612.66
5.3.110.0090.04312.66
5.3.100.0070.04012.12
5.3.90.0090.04212.08
5.3.80.0080.03712.08
5.3.70.0080.03912.07
5.3.60.0070.03912.07
5.3.50.0070.03612.00
5.3.40.0070.03612.00
5.3.30.0050.03711.94
5.3.20.0060.03711.72
5.3.10.0060.03511.68
5.3.00.0060.03611.67
5.2.170.0060.0319.17
5.2.160.0040.0319.17
5.2.150.0070.0379.17
5.2.140.0070.0329.17
5.2.130.0060.0319.13
5.2.120.0060.0339.12
5.2.110.0070.0359.13
5.2.100.0060.0339.13
5.2.90.0070.0329.13
5.2.80.0060.0329.13
5.2.70.0040.0329.12
5.2.60.0050.0319.08
5.2.50.0040.0319.05
5.2.40.0050.0289.02
5.2.30.0090.0409.00
5.2.20.0070.0348.99
5.2.10.0060.0358.91
5.2.00.0070.0328.77
5.1.60.0080.0268.05
5.1.50.0060.0318.05
5.1.40.0060.0268.04
5.1.30.0060.0298.38
5.1.20.0050.0318.41
5.1.10.0080.0308.13
5.1.00.0070.0318.13
5.0.50.0090.0296.61
5.0.40.0050.0256.47
5.0.30.0060.0336.28
5.0.20.0020.0246.25
5.0.10.0040.0226.23
5.0.00.0040.0356.22
4.4.90.0040.0154.78
4.4.80.0030.0164.75
4.4.70.0040.0154.75
4.4.60.0020.0184.76
4.4.50.0040.0164.77
4.4.40.0050.0324.71
4.4.30.0040.0194.76
4.4.20.0050.0174.84
4.4.10.0040.0164.85
4.4.00.0050.0264.76
4.3.110.0030.0164.67
4.3.100.0030.0184.67
4.3.90.0040.0174.64
4.3.80.0030.0274.58
4.3.70.0020.0174.63
4.3.60.0040.0164.62
4.3.50.0050.0174.63
4.3.40.0030.0284.54
4.3.30.0030.0183.43
4.3.20.0030.0233.42
4.3.10.0040.0193.39
4.3.00.0130.0207.96

preferences:
140.5 ms | 1394 KiB | 7 Q