PHP递归返回值时出现的问题解决办法分享_PHP教程

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><span> ?php  </span></span></span></li>
<li><span>function test($i)  </span></li>
<li class="alt"><span>{  </span></li>
<li>
<span>$i </span><span class="attribute">-</span><span>= </span><span class="attribute-value">4</span><span>;  </span>
</li>
<li class="alt">
<span>if($i </span><span class="tag"><span> </span><span class="tag-name">3</span><span>)  </span></span>
</li>
<li><span>{  </span></li>
<li class="alt"><span>return $i;  </span></li>
<li><span>}  </span></li>
<li class="alt"><span>else   </span></li>
<li><span>{  </span></li>
<li class="alt"><span>return test($i); //增加return, 让函数返回值  </span></li>
<li><span>}  </span></li>
<li class="alt"><span>}  </span></li>
<li><span>echo test(30);  </span></li>
<li class="alt">
<span class="tag">?></span><span> </span>
</li>
</ol>