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Definition and usage

The PHP function microtime () returns the current Unix Timestamp and the number of microseconds.

PHP function microtime () syntax

Microtime (get_as_float)

PHP function microtime () parameter and description

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

Description

The PHP function microtime () is only available in the operating system that supports the gettimeofday () System Call.

If no optional parameter is required, this function returns a string in the format of "msec sec", where sec is the current number of seconds since the Unix epoch (0:00:00 January 1, 1970 GMT, msec is in microseconds. The two parts of the string are returned in seconds.

PHP function microtime () Example

 
 

  
  
< ?php  
  
  
echo(microtime());  
  
  
?> 
 
 

Output:

0.25139300 1138197510

The PHP function microtime () is generally used as follows:

 
 

  
  
< ?php  
  
  
$mtime=explode(' ',microtime());
  
  
$startTime=$mtime[1]+$mtime[0];  
  
  
echo $startTime;  
  
  
?>