Php type stdclass as array

Convert stdclass object to array PHP

In this post, you will learn how to convert stdclass object to array using the PHP programming language.

The stdClass is the empty class in PHP, which is used to cast other types to an object. The stdClass is not the base class of the objects. If an object is converted to an object, it is not modified. But, if an object type is converted/type-casted an instance of stdClass is created if it is not NULL. If it is NULL, the new instance will be empty. An array is a collection of key/value pairs. In programming, sometimes we need to convert stdclass objects to arrays. It is easy to convert a stdclass object to an array if both the arrays and objects are one-dimensional, but it might be a little tricky if using multidimensional arrays and objects.

Convert stdClass objects to array

PHP provides stdClass as a generic empty class which is useful for adding properties dynamically and casting. It is useful in dynamic objects. Suppose we have the following stdClass objects.

#define stdObjects to store employee details $obj = new stdClass; $obj->name = "Priska"; $obj->position = "Data Administrator" $obj->age = 26; $obj->experience = 3;

The following PHP code converts the above defined objects into an array.

function convert_object_to_array($data) < if (is_object($data)) < $data = get_object_vars($data); >if (is_array($data)) < return array_map(__FUNCTION__, $data); >else < return $data; >> #define stdObjects to store employee details $obj = new stdClass; $obj->name = "Priska"; $obj->position = "Data Administrator"; $obj->age = 26; $obj->experience = 3; print_r($obj); $emp = convert_object_to_array($obj); print_r($emp);

 stdClass Object ( [name] => Priska [position] => Data Administrator [age] => 26 [experience] => 3 ) Array ( [name] => Priska [position] => Data Administrator [age] => 26 [experience] => 3 ) 

Function to Convert stdClass Objects to Multidimensional Arrays

In the given example, we have converted the stdClass objects to multidimensional arrays.

function convert_object_to_array($data) < if(is_object($data)) < // Get the properties of the given object $data = get_object_vars($data); >if(is_array($data)) < //Return array converted to object return array_map(__FUNCTION__, $data); >else < // Return array return $data; >> #define stdObjects to store employee details $obj = new stdClass; $obj->name = "Priska"; $obj->position = "Data Administrator"; $obj->age = 26; $obj->experience = 3; $obj->address->houseno = "K-92 A, Bank Street"; $obj->address->location = "Southcamp"; $obj->address->city = "Banglore"; print_r($obj); $emp = convert_object_to_array($obj); print_r($emp);

 stdClass Object ( [name] => Priska [position] => Data Administrator [age] => 26 [experience] => 3 [address] => stdClass Object ( [houseno] => K-92 A, Bank Street [location] => Southcamp [city] => Banglore ) ) Array ( [name] => Priska [position] => Data Administrator [age] => 26 [experience] => 3 [address] => Array ( [houseno] => K-92 A, Bank Street [location] => Southcamp [city] => Banglore ) ) 

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Php type stdclass as array

В этом разделе помещены уроки по PHP скриптам, которые Вы сможете использовать на своих ресурсах.

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Stdclass

Stdclass is a Standard Defined Classes. Stdclass is a generic empty class created by PHP. PHP uses this class when casting.

It is just a predefined class like Object in Java. It’s not the base class of the objects.

Scroll for More Useful Information and Relevant FAQs

Is stdClass the base class of the objects?

StdClass is NOT the Base class of the object. Let’s see with below example

class abc <> $object = new abc(); if ($object instanceof stdClass) < echo 'Yes! It is'; >else < echo 'No, StdClass is NOT Base class of the object'; >//Output: 'No, StdClass is NOT Base class of the object

Why does it throw an PHP Fatal error ‘cannot use an object of type stdclass as array’ and How to fix this error?

Why did it happen? Answer is in Question too that our code is trying to access values as array even though it was object type.

Solution: Just change of accessing value from generic bracket like
$array[‘name_of_param’] To $array->name_of_param .

Let’s understand through example:

Throw Error:

// Throw Error: $array = array( 'name' => 'demo', 'age' => '21', 'address' => '123, wall street' ); $object = (object) $array; echo $object instanceof stdClass ? "Yes" : "No"; // Output : Yes //Trying to access as array echo $object['name']; // Throws : PHP Fatal error: Uncaught Error: Cannot use object of type stdClass as array .

$array = array( 'name' => 'demo', 'age' => '21', 'address' => '123, wall street' ); $object = (object) $array; echo $object instanceof stdClass ? "Yes" : "No"; // Output : Yes echo $object->name; //Output: demo

Ways to Convert stdclass object to an associative array in php?

We can convert into array from stdclass in following ways:

Convert stdclass to associative array using json_decode

name = "Demo"; $stdObj->age = 20; $array = json_decode(json_encode($stdObj), true); // Json decode with second argumen true will return associative arrays. print_r($array); //Output Array ( [name] => Demo [age] => 20 )

Typecasting

Simple objects can convert using (array) typecasting.

Example: $array = (array) $stdObj;

Complex objects or lists of objects are converted into a multidimensional array by looping through each single object with typecasting.

How to fix stdclass undefined property error?

stdclass undefined property error reported when we try to access property which does not exist/declared. It’s best practise to check whether a property is set or not. We can use the php inbuilt function isset() for such cases.

Let see with below example

Why stdclass undefined property issue? Let’s see with this example

$stdObj = new stdClass(); $stdObj->name = "Demo"; $stdObj->age = 20; echo $stdObj->notExist; // Will throw error : PHP Notice: Undefined property: stdClass::$notExist

Fix stdclass undefined property issue

$stdObj = new stdClass(); $stdObj->name = "Demo"; $stdObj->age = 20; echo isset($stdObj->notExist) ? "Property notExist is defined" : "Property notExist is NOT defined"; // Property notExist is NOT defined

Learn about Stdclass object Php foreach loop with Examples

Fetching values from stdclass object depends on object type. We don’t need looping for single dimensional object. We can fetch values like $obj->param.

We require looping through objects which is multidimensional or complex structure. Please check Stdclass object Php foreach loop for well explained about stdclass object looping with easy to understand examples.

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