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? ??? ?? PHP ???? PHP?? Foreach ??? ???? 2D ???? ? ?? ?? ?? ???? ??? ??????

PHP?? Foreach ??? ???? 2D ???? ? ?? ?? ?? ???? ??? ??????

Nov 04, 2024 pm 08:22 PM

How to Retrieve First Level Keys in a 2D Array Using a Foreach Loop in PHP?

Foreach ??? ???? 2D ??? ? ?? ?? ? ??

PHP?? ??? ??? ???? ?? ?? ???? ? ????. ? ?? ?? ?? ???? ?. ?? ????? ???? foreach ??? ???? ?? ???? ??? ????????.

??? ?? ??? ?? $places?? ??? ????.

[Philadelphia] => Array
    (
        [0] => Array
            (
                [place_name] => XYX
                [place_id] => 103200
                [place_status] => 0
            )

        [1] => Array
            (
            [place_name] => YYYY
            [place_id] => 232323
            [place_status] => 0
        )
    )

?? ??? ??? ????. this:

foreach($places as $site): ?>
    <h5><?=key($site)?></h5>
        <?php foreach($site as $place): ?>
            <h6><?=$place['place_name']?></h6>
        <?php endforeach?>

<?php endforeach ?>

key($site)? ??? ? ? ?? ?? ?(?: "Philadelphia")? ????? ??? ?? ? ?? ?? ?("place_name")? ???? ????.

? ??? ????? ? ?? ?? ?? ?? ????? ???. ?? PHP?? ?????.

foreach ($places as $key => $value)

? ????? $key? ? ?? ?? ?? ?? $ ?? ?? ?? ???? ??? ?????.

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

foreach ($places as $key => $site): ?>
    <h5><?= $key ?></h5>
        <?php foreach($site as $place): ?>
            <h6><?=$place['place_name']?></h6>
        <?php endforeach?>

<?php endforeach ?>

? ??? PHP?? Foreach ??? ???? 2D ???? ? ?? ?? ?? ???? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!

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

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Undresser.AI Undress

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