title: PHP how to Remove non-language Characters from a String?
body: <p>how can i to remove all characters non-language ?</p>
  
  <p>i want to remove characters like this below, and all other of not language characters:</p>
  
  <pre><code>
  </code></pre>
  
  <p>i using this:</p>
  
  <pre><code>preg_replace("/[^a-z0-9A-Z\-\'\|\!\.\?\:\)\(\;\*\"]/u", " ", $text );
  </code></pre>
  
  <p>this is good for english,
  i need to approve all language characters, like Russian,arabic,hebrew,japan...</p>
  
  <p>Are there any string functions I can use to leave all language characters?</p>
  
  <p>thanks</p>