$re = '/"[^"]*"(?: *\+ *"[^"]*")+/';
$str = 'to match : "[a-zA-Z0-9_]*" + "[a-zA-Z0-9_]*" + "[a-zA-Z0-9_]*"
I want a pattern to match "this " + "is" + "concat" + ....""
This is "alone" no + after it. However this "is" + "not"';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($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