Dostupnost ve verzích: `PHP 5.5.0 / function boolval($var) {}

/** Get the integer value of a variable, `PHP 4.0

(PHP 5.5.0)
Get the boolean value of a variable


Parametr Datový typ Výchozí hodnota Poznámka
$var mixed   the scalar value being converted to a boolean.
$base int null The base for the conversion

Návratové hodnoty

  • boolean The boolean value of var.
  • int 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.

Další zdroje…n.intval.php

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