The time that it takes for a function to run
<p>What is the best way for getting how long a function takes to run until finish and then storing that number in a variable in PHP ?</p>

<p>How I would think about doing this is get the time right before the function is executed and right after and then take the difference of the former from the latter, but I don't know how get the time in php.</p>

<p>Also, I am trying to get the units to be in tenths and hundredths of second (.42 seconds), hopefully the function takes less than a second to complete so if anyone can help me convert it to those units, i'd appreciate that.</p>
