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Manual: is_integer
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  is_int
  Updated
Sat, 12 Aug 2000
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is_integer

(PHP3 , PHP4 )

is_integer -- Prüft, ob eine Variable vom Typ integer ist

Beschreibung

int is_integer (mixed var)

Diese Funktion liefert true, wenn var vom Typ integer ist, sonst false.

Siehe auch is_double(), is_float(), is_int(), is_string(), is_real(), is_object(), is_array() und is_long().


User Contributed Notes: is_integer

martin@hkhotmail.com
28-Jul-2000 10:02
is_integer only check the datatype of the var, but not the actual value. Also, if the input value is not integer, the function will return empty (true in empty($rc) ) rather than 0.

E.g.

var1 = 1111; //is_integer(var1) -> 1

var2 = '1111'; //is_integer(var2) -> empty

var3 = 'abcde'; //is_integer(var3) -> empty


P.S. the version of above result is PHP 3.0.8
Thx attention.

 About Notes

Previous page
  is_int
  Updated
Sat, 12 Aug 2000
 is_long 
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