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How do I save an array of objects in Wordpress/PHP via update_option ?

What I'm trying to save is something like:

update_option('my_option', [ 
 { 
  'c': htmlspecialchars($_POST['hidden_category']), 
  't': htmlspecialchars($_POST['hidden_tags']) 
 }, 
 { 
  'c': htmlspecialchars($_POST['hidden_category_1']), 
  't': htmlspecialchars($_POST['hidden_tags_1']) 
 },
 //etc..
]);

$_POST['hidden_category'] contains a string

while $_POST['hidden_tags'] contains an array of strings

Improve this question
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  • 1
    If I understood you correctly, I would apply one of functions serialize() or json_encode() to a value of $_POST['hidden_tags']. Commented Oct 6, 2022 at 22:07
  • I see, but the js like [{ .. }, { .. }, { .. }] structure itself is something update_option/php/mysql accepts? Commented Oct 6, 2022 at 22:10
  • Mentioned functions are returns a string result that you can store in MySQL. When you need to use a stored value you should deserialize() or json_decode(). Commented Oct 6, 2022 at 22:16
  • I'm trying, but var_dump(json_decode(get_option( 'my_option' )[0])) returns null with a var_dump , but get_option( 'my_option' ) var_dumps array(1) { [0]=> string(112) "{c: "MyCategory", t: "tag1, tag2, tag3" }" } Commented Oct 7, 2022 at 0:08
  • @Bob thanks I found the issue, it was in the format of the json, now it works Commented Oct 7, 2022 at 1:06

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