请教大神preg_replace如何替换成preg_replace_callback

 private function escapeReserved($query)  {               $search = array ("/({)(\w+)(})/e",                          "/({L#)([0-9]+)(})/e", 		          "/(\:)(uid|session|file|access|mode|comment|desc|size|start|end)/e",                        )	    $replace = array ("'\"\\1'.strtoupper('\\2').'\\3\"'",				          "'\"\\1'.strtoupper('\\2').'\\3\"'",				          "'\\1'.'db_'.'\\2'.'\\3'",)			          return preg_replace($search, $replace, $query);  	  }

回复讨论(解决方案)

$s = '{Test}{L#123456}:uid';echo escapeReserved($s);// "{TEST}""{L#123456}":db_uidecho '
';echo test($s);//"{TEST}""{L#123456}":db_uidfunction escapeReserved($query){	$search = array ("/({)(\w+)(})/e", 		"/({L#)([0-9]+)(})/e", 		"/(\:)(uid|session|file|access|mode|comment|desc|size|start|end)/e"); 	$replace = array ("'\"\\1'.strtoupper('\\2').'\\3\"'",		"'\"\\1'.strtoupper('\\2').'\\3\"'",		"'\\1'.'db_'.'\\2'.'\\3'");		 	return preg_replace($search, $replace, $query); }function test($query){	$search = array ("/({)(\w+)(})/", 		"/({L#)([0-9]+)(})/", 		"/(\:)(uid|session|file|access|mode|comment|desc|size|start|end)/");	return preg_replace_callback($search, function($m) {		if(isset($m[3])){			return '"'.$m[1].strtoupper($m[2]).$m[3].'"';		}else{			return "$m[1]db_$m[2]";		}       }, $query);}