How to check if string is a-Z 0-9 and -

Discussion in 'PHP' started by Psychotomus1, Oct 2, 2007.

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  1. #1
    how can I check if a string is a-Z 0-9 and the - symbol.
     
    Psychotomus1, Oct 2, 2007 IP
  2. kendo1979

    kendo1979 Peon

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    #2
    use preg_match

    preg_match ( string pattern, string subject [, array &matches [, int flags [, int offset]]] )
     
    kendo1979, Oct 2, 2007 IP
  3. krt

    krt Well-Known Member

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    #3
    The pattern you need is /^[a-z0-9-]+$/i or you can do the opposite:
    if (!preg_match("/[^a-z0-9-]/", ...
     
    krt, Oct 2, 2007 IP
  4. Psychotomus1

    Psychotomus1 Banned

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    #4
    thanks krt.
     
    Psychotomus1, Oct 2, 2007 IP