Comments on: Checkboxes/Multiple Select Boxes in PHP

By: YuriKolovsky

YuriKolovsky — Thu, 21 Apr 2011 18:17:00 +0000

What if I want to populate the multiple select listboxes from a MySQL database?

By: snipe

snipe — Sun, 22 Aug 2010 20:41:00 +0000

You would dynamically construct the query.

$sql = “select * from table “;

// there is at least one checkbox selected
if (count($foo) > 0) {

$sql .=’ where ‘;

for ($i=0;$i

$sql .=” checkbox = ‘”.$foo[$i].”‘ AND “;

} // end “for” loop
}

You’d need to throw a counter in there too, to determine whether or not you’ve hit the last checked box value, and suppress the AND statement – or you’d make the last part of the sql statement something that you know will always be true.

By: dana

dana — Fri, 20 Aug 2010 20:32:00 +0000

Just wondering if you could give an example of how you would use the selected check boxes in a mysql query using a select statement… such as select * from mytable where check1=’value1′ AND check2=’value2′ AND….; my point is what if one of the check marks is left blank then your query wouldn’t return what you want because it would be searching for a AND check1=’ ‘…