How to change object into array in php

In PHP, objects and arrays are two common data types. Sometimes it is necessary to convert an object into an array for easy use or storage in a database or log. Here are several ways to convert an object into an array:

1. Using the get_object_vars() function

The get_object_vars() function returns a list of properties of the object to associate Returned in the form of an array. You can use the following code to convert an object into an array:

$obj = new MyClass();
$arr = get_object_vars($obj);

2. Using cast

In PHP, you can cast an object into an array type. This converts all properties of the object into array elements. Use the following syntax:

$arr = (array) $obj;

3. Use json_decode and json_encode functions

json_decode() function can convert a JSON formatted string into a PHP array. In PHP, you can use the json_encode() function to convert an array into a JSON-formatted string. So, if you convert an object to a JSON-formatted string and then convert it to an array, you can use the following code:

$json = json_encode($obj);
$arr = json_decode($json, true);

4. Using serialization and deserialization functions

In PHP, you can use serialization and deserialization functions to convert objects into arrays. The serialization function serialize() can serialize PHP objects into storable strings, and the unserialize() function can deserialize serialized strings into PHP objects. You can use the following code to convert an object into an array:

$str = serialize($obj);
$arr = unserialize($str);

To sum up, the above methods can convert objects into arrays. In actual projects, the most appropriate method needs to be selected based on project needs. Among them, the get_object_vars() function is more suitable for obtaining object attributes, while forced type conversion and serialization and deserialization functions are suitable for processing multi-dimensional object data. The Json_decode and json_encode methods can easily convert objects into arrays, and the same applies to multidimensional data.

It should be noted that some object properties may be private or protected and cannot be obtained through the above methods. Public acquisition methods need to be added to the class. In addition, if the object contains other objects as properties, it needs to be recursively converted to obtain the complete array data.

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