PHP funkce intval()
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
Parametry
| Parametr | Datový typ | Výchozí hodnota | Poznámka |
|---|---|---|---|
$var |
mixed |
není | 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.