str_repeat
重複一個字符串
把字符串"Shanghai " 重複5 次:
<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>