Here is something that had me stumped with regards to gettype and is_object.
Gettype will report an incomplete object as such, whereas is_object will return FALSE.
<?php
if (!is_object($incomplete_obj)) {
echo 'This variable is not an object, it is a/an ' . gettype($incomplete_obj);
}
?>
Will print:
This variable is not an object, it is a/an object
gettype
(PHP 4, PHP 5, PHP 7)
gettype — Get the type of a variable
Opis
Returns the type of the PHP variable var. For
type checking, use is_* functions.
Parametry
-
var -
The variable being type checked.
Zwracane wartości
Possible values for the returned string are:
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
Rejestr zmian
| Wersja | Opis |
|---|---|
| 7.2.0 | Closed resources are now reported as 'resource (closed)'. Previously the returned value for closed resources were 'unknown type'. |
Zobacz też:
- settype() - Set the type of a variable
- get_class() - Zwraca nazwę klasy danego obiektu
- is_array() - Finds whether a variable is an array
- is_bool() - Finds out whether a variable is a boolean
- is_callable() - Verify that the contents of a variable can be called as a function
- 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() - Zwraca TRUE jeżeli dana funkcja została zdefiniowana
- method_exists() - Sprawdza czy istnieje metoda klasy
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User Contributed Notes 1 note
matt at appstate ¶
18 years ago
