3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a echo mb_substr($a,0,2,'utf-8'); exit;

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)
5.4.350.0060.03312.02
5.4.340.0060.03412.01
5.4.320.0100.04012.49
5.4.310.0080.03612.49
5.4.300.0110.03912.50
5.4.290.0060.03812.50
5.4.280.0060.03412.39
5.4.270.0120.04012.39
5.4.260.0070.03512.39
5.4.250.0050.04712.39
5.4.240.0090.03512.39
5.4.230.0080.03712.38
5.4.220.0050.03712.38
5.4.210.0050.03612.38
5.4.200.0090.03712.38
5.4.190.0080.03812.38
5.4.180.0090.03312.38
5.4.170.0070.04312.38
5.4.160.0060.04012.38
5.4.150.0070.06312.38
5.4.140.0070.04812.07
5.4.130.0100.03712.05
5.4.120.0040.03812.02
5.4.110.0030.03912.01
5.4.100.0040.04212.01
5.4.90.0110.04612.01
5.4.80.0080.04912.01
5.4.70.0060.04912.01
5.4.60.0060.03712.00
5.4.50.0110.03812.01
5.4.40.0040.04312.00
5.4.30.0070.03811.99
5.4.20.0070.03511.98
5.4.10.0060.03711.99
5.4.00.0080.03411.48
5.3.290.0060.04212.80
5.3.280.0080.04012.71
5.3.270.0080.04212.73
5.3.260.0080.04112.72
5.3.250.0060.04012.72
5.3.240.0060.03712.72
5.3.230.0070.03912.71
5.3.220.0080.03812.68
5.3.210.0070.03912.68
5.3.200.0080.03812.68
5.3.190.0060.03912.68
5.3.180.0110.03112.67
5.3.170.0040.03912.66
5.3.160.0050.03812.68
5.3.150.0060.04012.68
5.3.140.0070.03512.66
5.3.130.0080.04512.66
5.3.120.0100.05012.66
5.3.110.0080.04712.66
5.3.100.0080.04012.12
5.3.90.0080.03712.08
5.3.80.0080.04312.07
5.3.70.0110.03212.07
5.3.60.0110.03812.07
5.3.50.0100.04112.00
5.3.40.0090.03912.00
5.3.30.0080.03311.95
5.3.20.0060.03711.72
5.3.10.0060.03511.70
5.3.00.0050.04111.68
5.2.170.0050.0309.18
5.2.160.0020.0319.18
5.2.150.0040.0379.18
5.2.140.0050.0299.18
5.2.130.0050.0329.14
5.2.120.0060.0279.14
5.2.110.0050.0299.15
5.2.100.0040.0299.14
5.2.90.0060.0309.14
5.2.80.0060.0289.14
5.2.70.0040.0389.13
5.2.60.0050.0329.09
5.2.50.0080.0359.05
5.2.40.0080.0519.03
5.2.30.0050.0359.02
5.2.20.0030.0329.00
5.2.10.0030.0298.92
5.2.00.0070.0318.78
5.1.60.0030.0278.07
5.1.50.0050.0238.06
5.1.40.0030.0258.05
5.1.30.0070.0258.40
5.1.20.0080.0298.42
5.1.10.0050.0258.14
5.1.00.0050.0258.14
5.0.50.0030.0236.62
5.0.40.0060.0186.48
5.0.30.0030.0316.29
5.0.20.0010.0216.27
5.0.10.0030.0246.24
5.0.00.0030.0316.23
4.4.90.0020.0164.78
4.4.80.0020.0164.76
4.4.70.0040.0144.75
4.4.60.0030.0184.75
4.4.50.0020.0164.77
4.4.40.0040.0294.70
4.4.30.0010.0184.76
4.4.20.0010.0194.84
4.4.10.0040.0154.85
4.4.00.0030.0304.75
4.3.110.0040.0144.66
4.3.100.0030.0174.66
4.3.90.0040.0134.63
4.3.80.0030.0364.58
4.3.70.0040.0164.63
4.3.60.0040.0134.63
4.3.50.0030.0154.63
4.3.40.0040.0264.54
4.3.30.0020.0163.28
4.3.20.0020.0203.26
4.3.10.0020.0173.22
4.3.00.0170.0276.71

preferences:
138.99 ms | 1398 KiB | 7 Q