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compress

function compress($buffer) 
{ $search  = array('/\>[^\S ]+/s','/[^\S ]+\</s','/(\s)+/s',"/\s+/"); 
  $replace = array('>','<','\\1',' ');
  $buffer  = trim(preg_replace($search, $replace, $buffer)); 
  $buffer  = str_replace(' }','}', $buffer); 
  $buffer  = str_replace('{ ','{', $buffer); 	   
 return $buffer;
 }