This question already has an answer here:
Im currently struggeling with timestamps. I have Googled for a simple answer for this, but cant find any solution for my problem. I want to convert user input into UNIX time. The user inputs for example "26/03/1982", how do I convert this input into UNIX timestamp?
//User input
$birthday = "26/03/1982"; // d/m/y
$birthday = [CONVERTED TO UNIX]
Short and simple question. I will add more if you'd like. Thanks.
</div>
Look into the PHP function strtotime:
strtotime — Parse about any English textual datetime description into a Unix timestamp
I'm not sure how well it handles / in dates, but replace them with - and it'll work.
echo strtotime(str_replace("/","-","26/03/1982"));
outputs 385977600 which is the Unix date for Fri, 26 Mar 1982
You may need to set your date_default_timezone for this to work