7. Array Operators: Array operators are used to perform operations on arrays. These operators allow you to compare, merge, and manipulate arrays in various ways. - Union Operator (+): Merges two ...

The correct way to merge arrays in PHP and avoid the unexpected behavior of the '+' operator is by using the `array_merge()` function. `array_merge()` will preserve all elements from both arrays. If ...

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配列の値を検索するのに使われる関数 array_search を使います。 戻り値は、検索した要素がある場合要素番号を返してくれ ...