3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = "asdfaksjdhflkajsdhflkajshdflkja sldk jahlk sdfhal kjdsh lfkajs dhflkja shdlk askldj hafl ksjdhfl kajsdh flkasd hf"; $count = 0; $y = ""; for ($i=50; $i>0;$i--) { if ($x[i] == " ") { $count = $i; break; } } echo $y[0:$count];

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)
5.4.340.0080.03412.01
5.4.320.0110.03612.50
5.4.310.0070.03812.50
5.4.300.0070.03612.50
5.4.290.0060.03812.50
5.4.280.0050.03512.39
5.4.270.0040.03812.39
5.4.260.0070.03912.39
5.4.250.0040.03812.39
5.4.240.0090.03912.39
5.4.230.0050.04112.39
5.4.220.0070.03512.38
5.4.210.0050.03612.39
5.4.200.0070.03612.39
5.4.190.0060.03612.38
5.4.180.0070.03512.38
5.4.170.0080.03612.39
5.4.160.0050.04812.39
5.4.150.0090.03912.38
5.4.140.0060.04212.07
5.4.130.0100.03512.05
5.4.120.0090.03712.02
5.4.110.0070.04512.01
5.4.100.0030.03712.02
5.4.90.0050.03712.01
5.4.80.0090.03512.01
5.4.70.0060.03512.01
5.4.60.0080.03512.00
5.4.50.0050.03512.01
5.4.40.0040.03711.99
5.4.30.0050.03811.99
5.4.20.0070.03411.99
5.4.10.0080.03811.99
5.4.00.0060.03511.49
5.3.290.0050.03912.80
5.3.280.0060.03812.71
5.3.270.0030.04212.72
5.3.260.0060.03812.72
5.3.250.0110.03612.72
5.3.240.0040.03812.71
5.3.230.0050.03712.71
5.3.220.0050.03812.68
5.3.210.0060.03912.68
5.3.200.0060.04112.68
5.3.190.0030.04012.67
5.3.180.0070.03712.67
5.3.170.0060.04412.66
5.3.160.0070.03612.67
5.3.150.0070.03912.67
5.3.140.0020.04512.66
5.3.130.0090.03612.66
5.3.120.0060.03912.66
5.3.110.0050.04012.66
5.3.100.0070.03512.12
5.3.90.0060.03612.09
5.3.80.0050.03912.07
5.3.70.0040.03712.07
5.3.60.0050.03512.07
5.3.50.0070.03612.00
5.3.40.0080.03612.00
5.3.30.0060.03411.96
5.3.20.0070.03311.73
5.3.10.0060.03911.70
5.3.00.0110.03911.68
5.2.170.0050.0299.18
5.2.160.0020.0319.19
5.2.150.0090.0259.18
5.2.140.0060.0289.18
5.2.130.0010.0319.14
5.2.120.0050.0289.14
5.2.110.0070.0269.15
5.2.100.0020.0309.14
5.2.90.0060.0329.14
5.2.80.0110.0249.14
5.2.70.0070.0279.14
5.2.60.0060.0289.10
5.2.50.0040.0309.07
5.2.40.0070.0309.04
5.2.30.0030.0319.01
5.2.20.0030.0329.01
5.2.10.0060.0268.93
5.2.00.0070.0278.79
5.1.60.0040.0288.07
5.1.50.0040.0268.07
5.1.40.0060.0228.05
5.1.30.0040.0268.40
5.1.20.0060.0258.42
5.1.10.0040.0268.15
5.1.00.0050.0248.14
5.0.50.0020.0226.63
5.0.40.0050.0186.48
5.0.30.0030.0316.30
5.0.20.0040.0196.27
5.0.10.0050.0226.24
5.0.00.0020.0326.24
4.4.90.0050.0134.78
4.4.80.0010.0174.75
4.4.70.0030.0154.75
4.4.60.0050.0144.75
4.4.50.0050.0144.77
4.4.40.0030.0254.71
4.4.30.0020.0174.76
4.4.20.0030.0174.84
4.4.10.0040.0164.85
4.4.00.0010.0294.75
4.3.110.0030.0214.67
4.3.100.0030.0164.67
4.3.90.0020.0184.63
4.3.80.0030.0274.59
4.3.70.0020.0224.63
4.3.60.0040.0204.62
4.3.50.0030.0174.63
4.3.40.0030.0234.54
4.3.30.0030.0153.29
4.3.20.0040.0153.27
4.3.10.0020.0173.22
4.3.00.0070.0177.34

preferences:
133.51 ms | 1394 KiB | 7 Q