Database security issues

兄弟会之剑

The function is as follows:

$ INPUT: is the array that I defined to save the page submission data

function EscapeDBStr ($ INPUT)
{
$ tmp = array ();
foreach ($ INPUT as $ na => $ val) {
$ tmp [$ na] = addslashes ($ INPUT [$ na]);
}
Ranch
return $ tmp;
}

$ INPUT = escapeDBStr ($ INPUT);

The execution error is as follows:
Notice: Array to string conversion in E:\PHPServer\apache\htdocs\04 UpLoader (2)\include\common_function.php on line 26

Does anyone know what this means?
I want to convert the data submitted by the page to protect the database. How to solve it?

qijun2005

Notice don't care, it should be that your $input is not an array?

ccc060

It should be because the type of $INPUT[$na] is an array, the reason is
There may be such a situation
  <input type="checkbox" name="size[]" value="small"/>
  <input type="checkbox" name="size[]" value="medium"/>
  <input type="checkbox" name="size[]" value="large"/>