   #PHP Manual Variable Functions is_null is_object

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                                  is_numeric

   (PHP 4 )
   is_numeric --  Finds whether a variable is a number or a numeric
   string

Description

   bool is_numeric ( mixed var)

   Returns TRUE if var is a number or a numeric string, FALSE otherwise.

   See also is_bool(), is_float(), is_int(), is_string(), is_object(),
   is_array(), and is_integer().
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