PHP gets the number of milliseconds in the current time

1 second = millisecond = 1000,000 microsecond = 1000,000,000 nanosecond

PHP has no default function for milliseconds, but it provides a microtime () function that returns two elements, one for seconds, and one for fractional milliseconds, which makes it easy to define a function that returns a number of milliseconds, for example:

         /* Get time difference, millisecond         *        /function get_subtraction ()        {                $t 1 = microtime (true);                $t 2 = Microtime (true);                Return (($t 2-$1) *1000). ' Ms ';        }

  /         * * microsecond microseconds     millisecond milliseconds         * Returns the number of milliseconds for the timestamp */        function Get_millisecond ()        {                list ($ USEC, $sec) = Explode ("", Microtime ());                $msec =round ($usec *1000);                return $msec;                         }                 /*         * *         returns the number of milliseconds in a string time stamp */        function Get_total_millisecond ()        {                $time = explode ("", Microtime ());                 $time = $time [1]. ($time [0] * +);                 $time 2 = Explode (".", $time);                 $time = $time 2 [0];                return $time;        }            /*         *         returns the current Unix timestamp and the number of microseconds (in fractional seconds) of floating-point numbers, commonly used to calculate code snippet execution Time         *                 /function microtime_float ()        {            List ($usec, $sec) = Explode ("", Microtime ());            return (float) $usec + (float) $sec);        }

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