php - Problem with regex -

i have following regex:

/[0-9#%@_$&!?^\/|*<>]+/i 

which not supposed accept letters. accept letters when letters not entered @ first place.

e.g.: finds match if enter "123e" (but should not because there letter)

what problem in regex?

thanks

your regex checks if there one or more of list characters specified -- , that's true 123e.

it doesn't check if string contains only those.

might want edit regex, looks :

/^[0-9#%@_$&!?^/|*<>]+$/i 

where i've added 2 following anchors :

• ^ indicating "beginning of string / line"
• $ indicating "end of string / line"

which means regex check if string starts 1 of characters, end 1 of those, , contains those.