Something fishy radio VS checkbox

[webdev007]

Inserting in Db results of multiple radio

<input type='checkbox' name='aa[]' value='1'> WORKS

<input type='radio' name='aa[]' value='1'> Does not
AND
<input type='radio' name='aa[$counter]' value='1'> Does not.

The two radio result in "Undefined offset:0" at line ... whis is a !preg_match ...[$counter]
but if I do print_r the array is correct
AND
if I comment the whole preg section
then at the "DB insert level" I got undefined var $answer
I really do not get it!

 

[jpadie]

<input type='radio' name='aa[$counter]' value='1'> Does not.
[/quote]

variables do not get expanded within single quotes. could this be the issue? alternatively if this is outside a php block, you have to use a construct like this

<input type='radio' name='aa[[red]<? echo $counter;?>[/red]]' value='1'> Does not.

also, remember that only actually checked checkboxes will be submitted by the browser. so when you are explicitly setting the array key in the html you are not guaranteed to have a zero based array in the output.

so instead of a for loop across the results you would need to use a foreach

//NOT
for($i=0; $i<count($_POST['aa']); $i++){
 echo "value of checkbox $i is " . $_POST['aa'][$i];
 echo "<br/>";
}
//USE INSTEAD
foreach ($_POST['aa'] as $key=>$val){
 echo "value of checkbox $key is $val";
 echo "<br/>";
}

 

[webdev007]

Thank you
foreach was he answer