Описание

int intval (mixed var [, int base])

- Returns the integer value of var,

using the specified base for the conversion

(the default is base 10).

Список параметров

-
var

- The scalar value being converted to an integer
base

- The base for the conversion (default is base 10)

Возвращаемые значения

- The integer value of var on success, or 0 on
failure. Empty arrays and objects return 0, non-empty arrays and
objects return 1.
- The maximum value depends on the system. 32 bit systems have a
maximum signed integer range of -2147483648 to 2147483647. So for example
on such a system, intval('1000000000000') will return
2147483647. The maximum signed integer value for 64 bit systems is
9223372036854775807.
- Strings will most likely return 0 although this depends on the
leftmost characters of the string. The common rules of
integer casting
apply.

Примеры

-

Пример 1. intval() examples
- The following examples are based on a 32 bit system.
<?php echo intval(42); // 42 echo intval(4.2); // 4 echo intval('42'); // 42 echo intval('+42'); // 42 echo intval('-42'); // -42 echo intval(042); // 34 echo intval('042'); // 42 echo intval(1e10); // 1410065408 echo intval('1e10'); // 1 echo intval(0x1A); // 26 echo intval(42000000); // 42000000 echo intval(420000000000000000000); // 0 echo intval('420000000000000000000'); // 2147483647 echo intval(42, 8); // 42 echo intval('42', 8); // 34 ?>

Примечания

Замечание:
The base parameter has no effect unless the
var parameter is a string.

Смотрите также

-
floatval()
strval()
settype()
is_numeric()
Type juggling
BCMath Arbitrary Precision Mathematics Functions

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is_array 22222