str_repeat

例

文字列「上海」を5回繰り返します：

 <span class="token php language-php"><span class="token delimiter important"><？php</span>
<span class="token keyword">Echo</span> <span class="token function">Str_repeat</span> <span class="token punctuation">（</span> <span class="token string double-quoted-string">"Shanghai"</span> <span class="token punctuation">、</span> <span class="token number">5</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
<span class="token delimiter important">？></span></span>

自分で試してみてください