$string = '@var{내용}@var{내용2}';
preg_match_all('/\\{([^{}]+)\\}/', $string, $matches);
echo"<br>1111111 ". implode('', $matches[1]);

결과 : 1111111 내용내용2

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  $string = '@var(내용)@var{내용2}';
  preg_match_all('/\\(([^()]+)\\)/', $string, $matches);
  echo "<br>00000000 ". implode('', $matches[1])."<br>";

결과 : 00000000 내용