php - Regex remove the specials chars and keep the accents and ()@-_'& chars -


In my existing PHP code I have many problems with special characters and I waned them to replace them with a regedx is. Do you know how I can do this?

I just want to accept:

All letters with all the letters () @ -_ '& amp;

My Reggae: 

  preg_replace ('/ [^ \ p {L} 0-9 \ -] / u', '', $ string);   
 All this is to download a regex file to create a clean header.  
 Thank you for the best help,  
 
 
 
 The characters allowed in the class can include:  
  $ replace = preg_replace ("/ [^ \ p {L} 0-9 () @_ '& amp; -] + / u ", '', $ String);   
 A quantifier is better to use  +  because the replacement process is more efficient because many letters are converted and converted into each call. .

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