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PHPの論理演算子を使ってみよう!

Posted at

PHPの論理演算子で条件をまとめてみましょう!

index.php
<?php
$score = 30;
$name = 'kana';
if ($score >=20) {
  if($name === 'kana') {
    echo '素晴らしい!' . PHP_EOL;
  }
}

ターミナルで以下を実行すると...

~ $ php index.php

このように表示されました!

~ $ php index.php
素晴らしい!
~ $ 

ではこちらの処理をもっと見やすく、

「&&」と言う論理演算子でまとめて書いていきます。

「&&」は、なおかつやandという意味です!

index.php
$score = 30;
$name = 'kana';
if ($score >=20 && $name === 'kana') {
   echo '素晴らしい!' . PHP_EOL;
}

先程と同じようにターミナルに以下を入力します!

~$ php index.php

先程と同じ結果が出力されました!

~ $ php index.php
素晴らしい!
~ $ 

同じコードでも、論理演算子を使うと見やすくなりました ☆

index.php
index.php
<?php
$score = 30;
$name = 'kana';
if ($score >=20) {
  if($name === 'kana') {
    echo '素晴らしい!' . PHP_EOL;
  }
}
index.php
$score = 30;
$name = 'kana';
if ($score >=20 && $name === 'kana') {
   echo '素晴らしい!' . PHP_EOL;
}
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