get_resource_type
import_request_variables
Variable handling Funkcje
PHP Manual

# gettype

(PHP 4, PHP 5)

gettype — Get the type of a variable

### Opis

string gettype ( mixed `$var` )

Returns the type of the PHP variable `var`.

Ostrzeżenie

Never use gettype() to test for a certain type, since the returned string may be subject to change in a future version. In addition, it is slow too, as it involves string comparison.

Instead, use the is_* functions.

### Parametry

`var`

  The variable being type checked.

### Zwracane wartości

Possibles values for the returned string are:

- " boolean "
- " integer "
- " double " (for historical reasons "double" is returned in case of a float , and not simply "float")
- " string "
- " array "
- " object "
- " resource "
- " NULL "
- "unknown type"

### Przykłady

Przykład #1 gettype() example

`<?php
$data = array(1, 1., NULL, new stdClass, 'foo');
foreach ($data as $value) {
echo gettype($value), "\n";
}
?>`

Powyższy przykład wyświetli coś podobnego do:

    integer
    double
    NULL
    object
    string

### Zobacz też:

- settype() - Set the type of a variable
- get_class() - Zwraca nazwę klasy zadanego obiektu
- is_array() - Finds whether a variable is an array
- is_bool() - Finds out whether a variable is a boolean
- is_float() - Finds whether the type of a variable is float
- is_int() - Find whether the type of a variable is integer
- is_null() - Finds whether a variable is NULL
- is_numeric() - Finds whether a variable is a number or a numeric string
- is_object() - Finds whether a variable is an object
- is_resource() - Finds whether a variable is a resource
- is_scalar() - Finds whether a variable is a scalar
- is_string() - Find whether the type of a variable is string
- function_exists() - Return TRUE if the given function has been defined
- method_exists() - Sprawdza czy metoda klasy istnieje

get_resource_type
import_request_variables
Variable handling Funkcje
PHP Manual