What is the function in PHP to convert a date in the format "13.05.06 19:54:10" to a Unix Timestamp?

To convert a date in the format "13.05.06 19:54:10" to a Unix Timestamp in PHP, you can use the strtotime() function. This function parses an English textual datetime description into a Unix Timestamp. You need to make sure the date format is recognizable by strtotime(), which in this case can be achieved by reformatting the date string to "Y.m.d H:i:s". Once the date is in the correct format, you can pass it to strtotime() to get the Unix Timestamp.

$dateString = "13.05.06 19:54:10";
$unixTimestamp = strtotime(DateTime::createFromFormat('y.m.d H:i:s', $dateString)->format('Y.m.d H:i:s'));

echo $unixTimestamp;