   #PHP Manual Variable Functions is_float is_integer

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                                    is_int

   (PHP 3, PHP 4 )
   is_int -- Find whether a variable is an integer

Description

   bool is_int ( mixed var)

   Returns TRUE if var is an integer FALSE otherwise.

     Note: To test if a variable is a number or a numeric string (such
     as form input, which is always a string), you must use
     is_numeric().

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