CODEWITHSUNDEEP
php
Damiano Barbati
Damiano Barbati

Reputation: 3496

Extract element from associative array

How do I extract an element from an associative array?

$array = array(
   "smart" => "dog",
   "stupid" => "cat",
   "nasty" => "frog",
   "big" => "elephant"
);

I need to remove the element with key "nasty" to push it in the end of the array. I don't know the index of the element in the array. How can I achieve this? (I'm using first, second, third but the names of the keys are different and not indexed by a logic! I need to remove the element just by its key).

Upvotes: 0

Views: 385

Answers (3)

Yoshi
Yoshi

Reputation: 54649

$array = array(
   "smart" => "dog",
   "stupid" => "cat",
   "nasty" => "frog",
   "big" => "elephant"
);

$array += array_splice($array, array_search('nasty', array_keys($array)), 1);

print_r($array);

Upvotes: 1

genesis
genesis

Reputation: 50976

What about extract($array);?

Upvotes: 0

hsz
hsz

Reputation: 152216

Try with:

$array = array(
   "first" => "un",
   "second" => "dos",
   "third" => "tres"
);

$second = $array['second'];
unset($array['second']);
$array['second'] = $second;

Output:

array(3) {
  ["first"]=>
  string(2) "un"
  ["third"]=>
  string(4) "tres"
  ["second"]=>
  string(3) "dos"
}

Edit

$array = array(
   "first" => "un",
   "second" => "dos",
   "third" => "tres"
);
$output = array();

$order = array('first', 'third', 'second');
foreach ( $order as $key ) {
    if ( isset($output[$key]) ) {
        $output[$key] = $array[$key];
    }
}

Upvotes: 2

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