How To Check A ' $_Get ' Value Is 100% String Or Integer?

[Eritrea]

Suppose there is a url ex:

 

site.com/page.php?id=*ANTHING*

 

 

How do you check if *ANYTHING* is only string ( not composed of strings and integers ) or integer only.

 

 

Because, I used is_string() function to check it, but it only checks if the first letter is a string so

 

id=?cat435 and id=?catdasd will return the same result.

 

 

How can I make sure, if a value is then only a string or integer and not a combination of both

 

 

thanks

[Jessica]

A string CAN contain integers.

If you want only a-z, use a regex.

[Eritrea]

Thank you Jessica, I just realized that. Since, I've seen regex is used to manipulate string data. Somehow, every time I see it, it scares me.

[Pikachu2000]

is_string() will always return TRUE for form data because all form data is sent as string type. What you need if all you want is letters in the string is ctype_digit.

[Pikachu2000]

Sorry, make that ctype_alpha, not ctype_digit() (derp).