flock

名前:flock

カテゴリ:ファイルシステム

対応言語:php

一言説明:ファイルをロックまたはリリースします。

例

<span class="token php language-php"><span class="token delimiter important"><？php</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">"w+"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>

<span class="token comment">//専用ロック</span>
<span class="token keyword">if</span> <span class="token punctuation">（</span> <span class="token function">flock</span> <span class="token punctuation">（</span> <span class="token variable">$ file</span> <span class="token punctuation">、</span> <span class="token constant">lock_ex</span> <span class="token punctuation">）</span> <span class="token punctuation">）</span>
  <span class="token punctuation">{</span>
  <span class="token function">fwrite</span> <span class="token punctuation">（</span> <span class="token variable">$ file</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"write monthing"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
  <span class="token comment">//ロックを解放します</span>
  <span class="token function">Flock</span> <span class="token punctuation">（</span> <span class="token variable">$ file</span> <span class="token punctuation">、</span> <span class="token constant">lock_un</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span>
  <span class="token punctuation">}</span>
<span class="token keyword">それ以外</span>
  <span class="token punctuation">{</span>
  <span class="token keyword">エコー</span><span class="token string double-quoted-string">「エラーロックファイル！」</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 delimiter important">？></span></span>