string check

Hi all,

I want to check if a string contains only alphabetical and/or numerical characters. I think the solution is eregi, but i am not an expert on regular expressions...

Help extremely appreciated!

You can find out whether the value is string or a numerical value using two functions.

is_string() and is_int();

is_string()->This will find out whether variable is a string.

is_int()->This will find out whether variable is an integer.


or

probably you may use gettype() function to find out variable type.

$type=gettype($value);

#this will return the type of the variable.



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SR -
shiju.dreamcenter.net

"The fear of the LORD is the beginning of knowledge..."

Thats not what I meant... I want to make sure that a string contains ONLY a-z and 0-9, so that i can provide email-adress to my users.
I dont want users to hav signs like
" ' ! @ £ $ € [ ] { }
ans so on...

ohh sorry,

you can use the ereg() for doing this.

if (!ereg('^[-!#$%&'*+./0-9=?A-Z^_`a-z{|}~]+', $value){
//This will check the email validity

------------------
SR -
shiju.dreamcenter.net

"The fear of the LORD is the beginning of knowledge..."

yeah, I know i can use ereg (or eregi), but how does regular expressions work? That's my question!