PHP: Deleting array entry

[jbb]

This is probably a very stupid question, but I am totally stuck:
I would like to delete an element from an array, not just give it a value of "" (nothing). Is that possible, and if yes, how?
Thanks a lot!

Johannes

[oodie]

If you know which element you want to delete, use array_splice. Example :

$a = array("A","B","C","D","E");

// to remove 'D'
array_splice($a,3,1);
// now $a contain "A","B","C","E"

(you can't use array_splice in PHP3)

[jbb]

(you can't use array_splice in PHP3)

Well, that's a problem, my host doesn't offer php4 yet...
Is there any known way with php3?

Johannes

[Son Nguyen]

Check out the documentation in http://www.php.net about array
I'm sure you could, but I'm sorry, I started with php4 right away, dunno how to do in php3 (maybe pop/shift?!)

[oodie]

array_pop and array_shift also added in PHP4. If you know which element you want to remove I guess you can try this :

$k = 0;
$flag = 0;
for($i=0; $i<count($old_array); $i++) {
   /* loop for each element you want to remove
      (put them in $match array) */
   for($j=0; $j<count($match); $j++) {
      if($old_array[$i] == $match[$j]) {
         $flag = 1;  /* if match, set flag to 1 */
         break;
      }
   }
   /* keep it if it's not the one to remove */
   if($flag == 0) 
      $new_array[] = $old_array[$i];
}

It should work.