How can I loop through a series of response variables with a specific prefix in PHP?

Question

I'm posting a form to a php script. The form contains a dynamic number of fields named cardObjectX, where X is a counter. Example: cardObject1, cardObject2, and so on. I need to loop through all the cardObject fields in my php script, but because we don't know how many there will be for any given post, we can't hard-code the field names.

Is there a way I can grab an array of all the fields that start with cardObject?

Answer 1

<input name="cardObject[1]" value="">

using this naming style in your inputs makes it possible to access these inputs as an array in php like this:

$_POST['cardObject'][1]

or loop throug every cardObject like this:

foreach($_POST['cardObject'] as $cardObject){

}

Answer 2

this should help you get started:

foreach($_POST as $key=>$value) {
   if(strpos($key,"cardObject")!==FALSE) {
        //do something with this cardObject...
   }
}