alnum

[emceej]

how can i check if a string is alphanumeric only if ctype functions do not work in my php version ?

[Anon]

ereg("[0-9a-zA-Z]",$variable)

is true if $variable only contains 0-9 or letters

[emceej]

michael kristopeit wrote:

ereg("[0-9a-zA-Z]",$variable)

is true if $variable only contains 0-9 or letters

no...it's true even when there is only one alphanumeric char...so that users can write 'as/"' and it checks true...i need a function that checks if all chars are alphanumeric

[Anon]

well then do this

!ereg("[^{0-9a-zA-Z]",$variable)}