Question: In **`presentPopoverFromRect:inView:permittedArrowDirections:animated:`**, method of **`UIPopoverViewController`**, for "**`presentPopoverFromRect`**", what I have understood is that "**`x`**" and "**`y`**" are where it will point its anchor but what "**`width`**" and "**`height`**" parameter will do?

I am playing with them by setting different values and result is very confusing.

Answer: 
Use **single quotes** rather than backtick characters for ``123.231.213.132```

```
SELECT * 
FROM  `users`
WHERE  `IP` = '123.231.213.132'

```
you are using wrong quotation characters

to specify string value in mysql statement you have to use either '(single quote) or "(double quote)

`(backtick) characters are used to explicitly specify that quoted string represents a field name from where mysql should get the data

backticks are required in your statements if column names are conflicting with mysql's reserved keywords like `index`, `where`, etc