[SOLVED] String contains only letters and numbers

[npsari]

I am trying to create an if fucntion which will tell me if a string is a number or a letter only

i dont want anything else, not even spaces

 

$string = "Anything here";

if($string = [b]pattern[/b]) {
print"Wrong";
} else {
print"Right";
}

 

Can you tell me how to do it please

can you tell me the Pattern

 

 

[revraz]

http://us.php.net/ctype_alnum

[npsari]

Thanks much for the link