$re = '/(\w+):\s*
(
"[^"]*",? # qualquer coisa entre aspas, vírgula opcional
|[^\n\w]+ # só pra pegar o [{ depois de options
)/mx';
$str = ' options: [{
value: "120",
id: "40",
title: "1400g",
name: "Tamanho: 123"
},
{
value: "336",
id: "60",
title: "Chocolate",
name: "Sabor"
}
]';
$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