flock

Beispiel

 <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">// Exklusive Verriegelung</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">"etwas schreiben"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
  <span class="token comment">// Lock -Lock</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">anders</span>
  <span class="token punctuation">{</span>
  <span class="token keyword">Echo</span> <span class="token string double-quoted-string">"Fehlersperrdatei!"</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>