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連想配列

Posted at 2024-01-18

連想配列

基本的な内容は通常の配列と同じ

書き方

<?php

$arry = [
  'name' => 'Bob',
];
echo $arry['name'];

実行結果

Bob

配列の中に配列も含めれる

<?php

$arry = [
  'name' => 'Bob',
  'sports' => ['baseball', 'swimming'];
];
echo $arry['sports'][1];

実行結果

swimming

数値も格納可

<?php

$arry = [
  'age' => '12',
];
$arry['age'] += 24;
echo $arry['age'];

array_shiftも使える（けどあまり使わない）
削除はunsetを使うことが多い

unset

$arry = [
  'name' => 'BOb',
  'age' => '12',
  'sports' => ['baseball', 'swimming']
];

unset($arry['name']);

こちらでnameの配列を削除

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