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trim()について

Last updated at Posted at 2019-12-23

なぜtrimで全角スペースを削れると思ったのか:thinking:

$str = " sample ";
trim($str); // 「 sample 」 のまま

全角スペースを削るには色々手段がありますが、preg_replaceを使いたいと思います。

function trim_space($str){
    return preg_replace('/^[  ]*/u', '', preg_replace('/[  ]*$/u', '', $str));
}

$str = " sample ";
trim_space($str); // "sample"

「/(正規表現)/u」でUTF-8を明示的に指定するとなお安全。

※12/27 - trimと挙動が違っていたので修正しました

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