3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(mb_substr('$𝄞𝄞', 0, 7)

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)
5.4.340.0070.03411.98
5.4.320.0080.03512.46
5.4.310.0070.03812.46
5.4.300.0040.04012.46
5.4.290.0080.03712.46
5.4.280.0050.03612.36
5.4.270.0040.04012.36
5.4.260.0050.03912.36
5.4.250.0060.04012.36
5.4.240.0040.03812.36
5.4.230.0070.03612.35
5.4.220.0050.03812.35
5.4.210.0070.03412.35
5.4.200.0080.03612.35
5.4.190.0080.03412.34
5.4.180.0080.03412.34
5.4.170.0070.03612.36
5.4.160.0030.03912.36
5.4.150.0050.03712.35
5.4.140.0080.04212.04
5.4.130.0110.04212.02
5.4.120.0070.04011.98
5.4.110.0080.03511.98
5.4.100.0080.03411.98
5.4.90.0060.03811.98
5.4.80.0090.03811.98
5.4.70.0070.03211.97
5.4.60.0040.04211.97
5.4.50.0100.03111.98
5.4.40.0060.03911.96
5.4.30.0070.03411.96
5.4.20.0060.03511.95
5.4.10.0060.03411.96
5.4.00.0040.03911.45
5.3.290.0060.04012.80
5.3.280.0070.03612.71
5.3.270.0080.03712.72
5.3.260.0050.03912.72
5.3.250.0090.03412.72
5.3.240.0030.04112.72
5.3.230.0060.03812.71
5.3.220.0080.03512.68
5.3.210.0070.03812.68
5.3.200.0090.03712.68
5.3.190.0050.04112.68
5.3.180.0070.03712.67
5.3.170.0080.03612.66
5.3.160.0060.03712.68
5.3.150.0040.03912.67
5.3.140.0060.03912.66
5.3.130.0070.03812.66
5.3.120.0060.03812.66
5.3.110.0020.04312.65
5.3.100.0060.03612.12
5.3.90.0080.03412.08
5.3.80.0050.03712.07
5.3.70.0070.03612.07
5.3.60.0060.03612.07
5.3.50.0060.03612.00
5.3.40.0070.03512.00
5.3.30.0120.02911.95
5.3.20.0050.03611.73
5.3.10.0060.03411.70
5.3.00.0080.04411.68
5.2.170.0080.0399.18
5.2.160.0050.0299.18
5.2.150.0050.0309.18
5.2.140.0040.0319.18
5.2.130.0050.0299.13
5.2.120.0060.0279.14
5.2.110.0050.0289.15
5.2.100.0050.0279.14
5.2.90.0020.0319.14
5.2.80.0060.0349.14
5.2.70.0060.0299.13
5.2.60.0070.0289.09
5.2.50.0020.0329.06
5.2.40.0040.0289.04
5.2.30.0030.0309.02
5.2.20.0070.0279.00
5.2.10.0030.0318.92
5.2.00.0070.0278.78
5.1.60.0020.0268.07
5.1.50.0020.0278.06
5.1.40.0060.0278.05
5.1.30.0060.0248.40
5.1.20.0030.0278.41
5.1.10.0020.0288.14
5.1.00.0030.0278.14
5.0.50.0020.0236.62
5.0.40.0030.0206.48
5.0.30.0010.0336.29
5.0.20.0040.0206.27
5.0.10.0040.0196.24
5.0.00.0040.0306.23
4.4.90.0050.0134.77
4.4.80.0060.0124.75
4.4.70.0030.0164.76
4.4.60.0020.0164.75
4.4.50.0050.0204.77
4.4.40.0020.0294.71
4.4.30.0080.0114.76
4.4.20.0000.0194.85
4.4.10.0030.0164.84
4.4.00.0040.0294.76
4.3.110.0010.0174.67
4.3.100.0020.0154.66
4.3.90.0030.0144.63
4.3.80.0030.0244.58
4.3.70.0060.0114.63
4.3.60.0020.0144.63
4.3.50.0030.0154.63
4.3.40.0030.0234.54
4.3.30.0020.0163.29
4.3.20.0020.0163.26
4.3.10.0000.0173.22
4.3.00.0070.0176.70

preferences:
141.13 ms | 1394 KiB | 7 Q