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definition and usage

PHP function microtime() returns the current Unix timestamp and microseconds number.

PHP function microtime() syntax

microtime(get_as_float)

PHP function microtime() parameters and description

get_as_float If the get_as_float parameter is given and its value is equivalent to TRUE, this function will return a floating point number.

Note

The PHP function microtime() is only available under operating systems that support the gettimeofday() system call.

If called without optional arguments, this function returns a string in the format "msec sec", where sec is the date since the Unix epoch (0:00:00 January 1, 1970 GMT) The number of seconds, msec is the microsecond part. Both parts of the string are returned in seconds.

PHP function microtime() example

<ol class="dp-xml"><li class="alt"><span><span class="tag"><</span><span> ?php  </span></span></li><li><span>echo(microtime());  </span></li><li class="alt"><span class="tag">?></span><span> </span></span></li></ol>

Output:

0.25139300 1138197510

General usage of PHP function microtime() As follows:

<ol class="dp-xml"><li class="alt"><span><span class="tag"><</span><span> ?php  </span></span></li><li><span>$</span><span class="attribute">mtime</span><span>=</span><span class="attribute-value">explode</span><span>(' ',microtime());</span></li><li><span>$</span><span class="attribute">startTime</span><span>=$mtime[1]+$mtime[0];  </span></li><li class="alt"><span>echo $startTime;  </span></li><li><span class="tag">?></span><span> </span></span></li></ol>