$re = '/"([^"]*+)/';
$str = '"THREAD1" daemon prio=10 tid=0x00007ff6a8007000 nid=0xd4b6 runnable [0x00007ff7f8aa0000]
';
preg_match($re, $str, $matches, PREG_OFFSET_CAPTURE, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php