Uncaught Error: Call to undefined function mySQL_error() in code example

Example: Call to undefined function mysql_query() in D:\xampp\htdocs\image\index.php:11 Stack trace: #0 {main} thrown in site:stackoverflow.com

: Call to undefined function mysql_query() in D:\xampp\htdocs\image\index.php:11 Stack trace: #0 {main} thrown in