Question

I should send Hi" to a Yahoo server, so in PHP I should place \ befor the ", but it will get bad JSON arguments. How should I do it?

Place Hi" in JSON code without error?

$message = "Hi\"";
$postdata = '{
             "message" : "'.$message.'"
             }';

Answer 1

Use json_encode instead of hand-crafting JSON:

$postdata = json_encode(array("message" => $message));

If you must handcraft your JSON, don’t forget to add a backslash before a quotation mark:

$message = "Hi\\\"";
// or, more clearly ...
$message = 'Hi\\"';