$re = '/(\w+)\s?:\s?("?[^",]+"?,?)/';
$str = 'storeName: "testName",
address: "12345 Road",
address2: "Suite 500",
city: "testCity",
storeImage: "http://www.testLink.com",
state: "testState",
phone: "999-999-9999",
lat: 99.9999,
lng: -99.9999';
$subst = "\"$1\":$2";
$result = preg_replace($re, $subst, $str);
echo "The result of the substitution is ".$result;
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