Rapid search in a multi-dimensional area

[briley]

There's a lot of content on your hands:

Array (
[show] => Array
    (
    [0] => Array
            (
                [name] => Добрый динозавр
                [id] => 3777
                [alias] => dobrii-dinozavr-the-good-dinosaur
             )
    [1] => Array
            (
                [name] => Звёздные войны: Пробуждение силы
                [id] => 3821
                [alias] => zvezdnie-voini-probuzhdenie-sili-star-wars-the-force-awakens
        )
[2] и так далее...

Show me how best you can get. [id] If only [alias]?

[Oba22]

For php constituent5.5.0, the idea is that:

$key = array_search("dobrii-dinozavr-the-good-dinosaur", array_column($arr, 'alias'));
echo $arr[$key]["id"];

For the general case, and possibly for 5.5.0, it will be faster to maintain a pre-set of indices alias and contents . - id♪

If you need to deliver different fields on the basis of the aliaths, build a set of keys. alias and numbers in the reference area. I mean, something like that:

<?php
$arr=array(array ("name" => "Добрый динозавр","id" => 3777,"alias" => "dobrii-dinozavr-the-good-dinosaur"),
           array ("name" => "Звёздные войны: Пробуждение силы","id" => 3821,
                "alias" => "zvezdnie-voini-probuzhdenie-sili-star-wars-the-force-awakens")
          );
$index=array();
foreach($arr as $k => $v)
{
 $index[$v['alias']]=$k;
}
print $arr[$index["dobrii-dinozavr-the-good-dinosaur"]]["id"];
?>

If search occurs frequently in many of the violators ' challenges and a new baseline is rarely available. To record the information in the OBD system or at least prepare an index or converted body and put it somewhere, for example, through serialize♪