How can a PHP developer convert a time input in the format h:i:s.u (Milliseconds) into a timestamp in milliseconds for accurate calculations?

To convert a time input in the format h:i:s.u (milliseconds) into a timestamp in milliseconds for accurate calculations, a PHP developer can use the DateTime class to parse the input time, convert it to seconds, and then multiply by 1000 to get the timestamp in milliseconds. 

$input_time = '12:34:56.789'; // Example input time in h:i:s.u format
$date = DateTime::createFromFormat('H:i:s.u', $input_time);
$timestamp_in_milliseconds = $date->getTimestamp() * 1000;

echo $timestamp_in_milliseconds; // Output the timestamp in milliseconds

Keywords

PHP time input timestamp milliseconds calculations

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