Note: is_object(null) returns false
This should actually be part of the input/output specification at the top of this page.(PHP 4, PHP 5, PHP 7, PHP 8)
is_object — Finds whether a variable is an object
valueThe variable being evaluated.
| Version | Description |
|---|---|
| 7.2.0 |
is_object() now returns true for unserialized objects without
a class definition (class of __PHP_Incomplete_Class). Previously
false was returned.
|
Example #1 is_object() example
<?php
// Declare a simple function to return an
// array from our object
function get_students($obj)
{
if (!is_object($obj)) {
return false;
}
return $obj->students;
}
// Declare a new class instance and fill up
// some values
$obj = new stdClass();
$obj->students = array('Kalle', 'Ross', 'Felipe');
var_dump(get_students(null));
var_dump(get_students($obj));
?>
Note: is_object(null) returns false
This should actually be part of the input/output specification at the top of this page.Unserializes data as returned by the standard PHP serialize() function. If the unserialized object is not an array, it will be converted to one, particularily useful if it returns a __PHP_Incomplete_Class.
<?php
/**
*
* @param string $data Serialized data
*
* @return array Unserialized array
*/
function unserialize2array($data) {
$obj = unserialize($data);
if(is_array($obj)) return $obj;
$arr = array();
foreach($obj as $k=>$v) {
$arr[$k] = $v;
}
unset($arr['__PHP_Incomplete_Class_Name']);
return $arr;
}
?>I would expect a reference to is_a() function here.
if you would test if an object is of an specific type use is_a()
https://www.php.net/manual/en/function.is-a.php