PHP get Millisecond Time microtime () Usage

In php, if we want to get a millisecond, we have to use microtime () for conversion. Next I will give you some examples, hoping to help you.

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The Code is as follows:	Copy code
Function getmicrotime () { List ($ usec, $ sec) = explode ("", microtime ()); Return (float) $ usec + (float) $ sec ); }

In fact, we have processed the microtime () function.

The Return Value of the microtime () function is in this form:

0.06261400 1303715872

The space is followed by the current timestamp, and the space is preceded by the current exact time

For example, calculate the page execution time function

The Code is as follows:	Copy code
<? Php /** * Simple function to replicate PHP 5 behaviour */ Function microtime_float () { List ($ usec, $ sec) = explode ("", microtime ()); Return (float) $ usec + (float) $ sec ); } $ Time_start = microtime_float (); // Sleep for a while Usleep (100 ); $ Time_end = microtime_float (); $ Time = $ time_end-$ time_start; Echo "Did nothing in $ time secondsn "; ?>