strtolower

예

모든 문자를 소문자로 변환합니다.

 <span class="token php language-php"><span class="token delimiter important"><? php</span>
<span class="token keyword">Echo</span> <span class="token function">strtolower</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hello World."</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

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