Question

With an associative array such as that one:

$fruits = array("d"=>"lemon", "a"=>"orange", "b"=>"banana", "c"=>"apple");

I tried accessing to a value using :

$fruits[2];

This gives me a PHP notcie: Undefined offset;

Is there a way around that ?

Thanks

Answer 1

Not if you want to keep it as an associative array. If you want to use numeric key indexes you could do this:

$fruits  = array("d"=>"lemon", "a"=>"orange", "b"=>"banana", "c"=>"apple");
$fruits2 = array_values($fruits);

echo $fruits2[2];

Find out more about array_values() at the PHP manual.

---

UPDATE: to compare two associative arrays as you mentioned in your comment you can do this (if they have the same keys — if not you should add isset() checks):

foreach (array_keys($arr1) as $key) {
  if ($arr1[$key] == $arr2[$key]) {
    echo '$arr1 and $arr2 have the same value for ' . $key;
  }
}

Or, to avoid the array_keys function call:

foreach ($arr1 as $key => $val) {
  if ($val == $arr2[$key]) {
    echo '$arr1 and $arr2 have the same value for ' . $key;
  }
}