strtoupper

Exemple

Convertir tous les caractères en capitalisation:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token keyword">Echo</span> <span class="token function">Strtoupper</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>

Essayez-le vous-même