Php time difference in milliseconds

i use the following set of functions for handling mysql dates, maybe they can help you:

function sqlArray($date, $trim=true) {
    $result = array();
    $result['day'] = ($trim==true) ? ltrim(substr($date,8,2),'0') : substr($date,8,2);
    $result['month'] = ($trim==true) ? ltrim(substr($date,5,2),'0') : substr($date,5,2);
    $result['year'] = substr($date,0,4);
    $result['hour'] = substr($date,11,2);
    $result['minutes'] = substr($date,14,2);
    return $result;
}

function sqlInt($date) {
    $date = sqlArray($date);
    return mktime($date['hour'], $date['minutes'], 0, $date['month'], $date['day'], $date['year']);
}

function difference($dateStart, $dateEnd) {
    $start = sqlInt($dateStart);
    $end = sqlInt($dateEnd);
    $difference = $end - $start;
    $result = array();
    $result['ms'] = $difference;
    $result['hours'] = $difference/3600;
    $result['minutes'] = $difference/60;
    $result['days'] = $difference/86400;
    return $result;
}

in your case it should be something like:

$dateplayed = '2011-01-17 11:01:44'; 
print_r(difference($dateplayed, date('Y:m:d')));

hope it works :D

(PHP 4, PHP 5, PHP 7, PHP 8)

microtime — Return current Unix timestamp with microseconds

Description

microtime(bool $as_float = false): string|float

For performance measurements, using hrtime() is recommended.

Parameters

If used and set to true, microtime() will return a float instead of a string, as described in the return values section below.

Return Values

By default, microtime() returns a string in the form "msec sec", where sec is the number of seconds since the Unix epoch (0:00:00 January 1,1970 GMT), and msec measures microseconds that have elapsed since sec and is also expressed in seconds as a decimal fraction.

If as_float is set to true, then microtime() returns a float, which represents the current time in seconds since the Unix epoch accurate to the nearest microsecond.

Examples

Example #1 Timing script execution

$time_start = microtime(true);// Sleep for a while
usleep(100);$time_end = microtime(true);
$time = $time_end - $time_start;

echo

Example #2 microtime() and REQUEST_TIME_FLOAT

// Randomize sleeping time
usleep(mt_rand(100, 10000));// REQUEST_TIME_FLOAT is available in the $_SERVER superglobal array.
// It contains the timestamp of the start of the request with microsecond precision.
$time = microtime(true) - $_SERVER["REQUEST_TIME_FLOAT"];

echo

See Also

• time() - Return current Unix timestamp
• hrtime() - Get the system's high resolution time

$start = new DateTime('2011-12-31 00:00:00');
$end = new DateTime('2021-01-01 00:00:00');

echo $end->getTimestamp() - $start->getTimestamp(); // output: 284169600

$start = new DateTime('2011-12-31 00:00:00');
$end = new DateTime('2021-01-01 00:00:00');
$diff = $start->diff($end);

$daysInSecs = $diff->format('%r%a') * 24 * 60 * 60;
$hoursInSecs = $diff->h * 60 * 60;
$minsInSecs = $diff->i * 60;

$seconds = $daysInSecs + $hoursInSecs + $minsInSecs + $diff->s;

echo $seconds; // output: 284169600

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