clearstatcache

實例

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token comment">//檢查文件大小</span>
<span class="token keyword">echo</span> <span class="token function">filesize</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"test.txt"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>

<span class="token variable">$file</span> <span class="token operator">=</span> <span class="token function">fopen</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"test.txt"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"a+"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>

<span class="token comment">// 截取文件</span>
<span class="token function">ftruncate</span> <span class="token punctuation">(</span> <span class="token variable">$file</span> <span class="token punctuation">,</span> <span class="token number">100</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token function">fclose</span> <span class="token punctuation">(</span> <span class="token variable">$file</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>

<span class="token comment">//清除緩存並再次檢查文件大小</span>
<span class="token function">clearstatcache</span> <span class="token punctuation">(</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">filesize</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"test.txt"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

輸出：

 792
100