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PHP ??? ?? ??(??? ? ??)
? ??? ?? PHP ???? ??? PHP ??? ???? ?? ????? ?? ??? ??????

??? PHP ??? ???? ?? ????? ?? ??? ??????

Dec 09, 2024 pm 08:59 PM

How to Efficiently Find a Key in a PHP Multidimensional Array by its Value?

PHP ??? ?? ??(??? ? ??)

? ??????? ?? ???? ???? ??? ??? ????. ? ??? ??, ???, ?? ?? ?? ???? ?????. ??? ??? ??? ???? ???? ?? ??? ???? ?? ?? ??? ???? ??? ?? ????.

?? ???? ? ?? ??? array_search ??? array_column ??? ???? ????. ??? ? ?? ??? ??? ??? ?? ?????.

function array_search_multidim(array $array, string $column, string $key)
{
    return array_search($key, array_column($array, $column));
}

? ??? ????? ??? ?? ?????.

$product_key = array_search_multidim($products, 'slug', 'breville-one-touch-tea-maker-BTM800XL');

??? $products ???? ??? ???? ??? ?????. ??? ??? 'breville-one-touch-tea-maker-BTM800XL'? ???? ?? ?? ?????. ? ???? ? 1? ?????.

? ?? ??? ???? array_search ??? ???? ???. ? ?? ??? ?? PHP 5.5.0 ??? ???? ???.

$key = array_search('breville-one-touch-tea-maker-BTM800XL', array_column($products, 'slug'));

? ??? ?? ??? ??? ??? ????.

array_walk_recursive? ???? ? ?? ??? ????. ??? ?? ??? ??????? ???? ???? ?? ??? ?? ?????. ?:

function array_walk_recursive_search($input, $needle, &$result = null)
{
    if (is_array($input)) {
        foreach ($input as $key => $value) {
            array_walk_recursive_search($value, $needle, $result);
        }
    } else {
        if ($input === $needle) {
            $result = $key;
        }
    }
}

? ??? ??? ?? ??? ? ????.

array_walk_recursive($products, 'breville-one-touch-tea-maker-BTM800XL', $product_key);

array_walk_recursive ???? ? ????? ?? ??? ?? ??? ??? ? ??? ?? ???? ?? ?????. ????? ?? ???? ????.

????? ?? ??? ??? ??????? ?? ?? ??? ?? ??? ?? ?????. ??? ?? ???? ? ?? ??? array_search ? array_column ??? ???? ????.

? ??? ??? PHP ??? ???? ?? ????? ?? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!

? ????? ??
? ?? ??? ????? ???? ??? ??????, ???? ?????? ????. ? ???? ?? ???? ?? ??? ?? ????. ???? ??? ???? ???? ??? ?? admin@php.cn?? ?????.

? AI ??

Undresser.AI Undress

Undresser.AI Undress

???? ?? ??? ??? ?? AI ?? ?

AI Clothes Remover

AI Clothes Remover

???? ?? ???? ??? AI ?????.

Video Face Swap

Video Face Swap

??? ??? AI ?? ?? ??? ???? ?? ???? ??? ?? ????!

???

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???? ?? ?? ?? ???

SublimeText3 ??? ??

SublimeText3 ??? ??

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???? 13.0.1 ???

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??? PHP ?? ?? ??

???? CS6

???? CS6

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? ??? ?? ?? ?????(SublimeText3)

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