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PHP 3項演算子

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3項演算子の使い方

知らなかったのでメモです。

要約

  • 条件演算子のうちの一つ
<?php
// 三項演算子の使用例
$action = (empty($_POST['action'])) ? 'default' : $_POST['action'];

// 上記は以下の if/else 式と同じです。
if (empty($_POST['action'])) {
    $action = 'default';
} else {
    $action = $_POST['action'];
}

?>

書き方

(式1) ? (式2) : (式3);
式1の条件がTRUE(つまり、合ってるよーって時)、式2が発動する。
式1の条件がFALSE(つまり、間違ってるよーって時)、式3が発動する。

そんな感じです。

takupoku
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