how do I get all checkbox variables even if not checked from HTML to PHP? how do I get all checkbox variables even if not checked from HTML to PHP? php php

how do I get all checkbox variables even if not checked from HTML to PHP?


php html checkbox checked

I just ran into this problem myself. I solved it by adding a duplicate hidden field with the same name. When the browser sends this information, the second field overrides the first (so ensure that the hidden field comes first).

<input type="hidden" name="foo" value=""><input type="checkbox" name="foo" value="bar">

If the checkbox is not checked you get:

$_REQUEST[ 'foo' ] == ""

If the checkbox is checked you get:

$_REQUEST[ 'foo' ] == "bar"

php html checkbox checked

This isn't something that can be done purely in PHP.

Browsers only send information about checkboxes if they are checked, if you want to also send information about unchecked checkboxes, you'll have to add hidden fields in the form and use javascript to manage them.

php html checkbox checked

I just stumbled across this problem myself and I sorted it by updating all values in the database to unchecked then re-checking only the ones that are in the POST data, this works fine for me but might not be everyone's cup of tea.

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