使用curl发布存储在变量中的json数据

Question

Sending POST request data stored in a variable using curl, sends $variable instead json data.

P=`/usr/bin/sudo /usr/bin/curl -X POST -H "Content-Type:application/json" --data-urlencode $data http://127.0.0.1/abc.php`

Trying to send POST request to php, but it receives $data instead json data{"abc":"11","xyz":"20"}.

Had try with '$data', "$data", \'$data\' and \"$data\", where $data = {"abc":"11","xyz":"20"}

Please give an example that works. Thanks in advance.

Answer 1

P=`/usr/bin/sudo /usr/bin/curl -X POST -H "Content-Type:application/json" -d "$O" http://127.0.0.1/abc.php` solves issue. 

If you add single quote it won't expand variable, so it requires to add double quote.

I suggest all time reload page or script, as I have seen if you not reload, it work with your last change instead new one.