how to use regular expressions on variable NAMES (not values)?

[Mieke23]

Hi,

I have 5 variables of which 3 begin with 'regel':
$regel1="bla";
$regel2="blabla";
$regel3="blablabla";
$count="3";
$submit="submit";

These variables are send from a form.
I only want to print those variable names that begin with 'regel'.

Can I, and how can I use a regular expression for this?

Something like this?

while (list($key,$value) = each($HTTP_POST_VARS))
{
if ( ereg('^', 'regel') ) // <- ????????????
{
echo "variabele = $key value = $value <br>";
}
}

Thanks!
Mieke.

[mikejohnston]

I create a loop (if I know how many are coming) and place them into an array, with something like this:

for ($i=1;$i<=$count;$i++) {
$tmp = "regel".$i;

$regal[$i] = ${$tmp};

}

With this little loop your variables are now placed into the regal array and you can do whatever with them... IE:

echo $regal[1];

Would produce (from your example) the following output:

bla

Good Luck!