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 — 检测变量是否是对象
value需要检测的变量。
示例 #1 is_object() 示例
<?php
// 声明简单的函数，从对象中返回数组
function get_students($obj)
{
if (!is_object($obj)) {
return false;
}
return $obj->students;
}
// 声明新的类实例并填充值
$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