Description:
------------
---
From manual page: http://www.php.net/function.key#refsect1-function.key-examples
---
<?php
$array = array(
    'fruit1' => 'manzana',
    'fruit2' => 'naranja',
    'fruit3' => 'uva',
    'fruit4' => 'manzana',
    'fruit5' => 'manzana');

// Este ciclo muestra todas las claves del array asociativo
// donde el valor equivale a "manzana"
while ($fruit_name = current($array)) {
    if ($fruit_name == 'apple') {
        echo key($array).'<br />';
    }
    next($array);
}
?>
in Spanish traslation the condition $fruit_name == 'apple' is wrong. it should be $fruit_name == 'manzana'

Test script:
---------------
<?php
$array = array(
    'fruit1' => 'manzana',
    'fruit2' => 'naranja',
    'fruit3' => 'uva',
    'fruit4' => 'manzana',
    'fruit5' => 'manzana');

// Este ciclo muestra todas las claves del array asociativo
// donde el valor equivale a "manzana"
while ($fruit_name = current($array)) {
    if ($fruit_name == 'manzana') {
        echo key($array).'<br />';
    }
    next($array);
}
?>

Actual result:
--------------
fruit1<br />
fruit4<br />
fruit5<br />