   #PHP Manual Mathematical Functions hypot is_infinite

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                                   is_finite

   (PHP 4 >= 4.2.0)
   is_finite -- Finds whether a value is a legal finite number

Description

   bool is_finite ( float val)

   Returns TRUE if val is a legal finite number within the allowed range
   for a PHP float on this platform.

   See also is_infinite() and is_nan().
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