How to convert php+object to array

PHP is a very popular programming language that is widely used in WEB development. Among them, Object and Array are very common data types in PHP, and they are also one of the data types that often need to be converted during development. This article will introduce how to convert Object type data in PHP to Array type data.

1. Why it is necessary to convert to Array type data

In PHP, the operation of Object type data is often more complicated than the operation of Array type data. Compared with Array type data, Object type data often requires calling the object's properties or methods to obtain or set specific values. In some cases, developers prefer to convert Object type data to Array type data to make it easier to operate on the data.

For example, when we need to serialize some data into JSON format and transmit it to the front-end page, the JSON format can only accept Array type data, but not Object type data. At this time, we need to convert Object type data into Array type data for processing to facilitate subsequent data transmission and operations.

2. Method to convert Object type data into Array type data in PHP

In PHP, there are many methods to convert Object type data into Array type data. The following are two of the methods:

1. Convert Object type data to an associative array

Converting Object type data to an associative array is a very simple and effective method Conversion method. In this method, we can convert Object data into an associative array by adding the (array) operator in front of the Object data. The following is a code example:

<?php
class Person{
    public $age;
    public $gender;
    public $name;
}

$obj = new Person();
$obj->age = 25;
$obj->gender = 'Male';
$obj->name = 'Tom';

$arr = (array)$obj;
print_r($arr);
?>

The output result is:

Array
(
    [age] => 25
    [gender] => Male
    [name] => Tom
)

2. Use the built-in function get_object_vars() to convert Object type data into an array

In addition to using Operator (array) In addition to converting Object type data into an associative array, we can also use the built-in function get_object_vars() to convert Object type data into an array. The following is a code example:

<?php
class Person{
    public $age;
    public $gender;
    public $name;
}

$obj = new Person();
$obj->age = 25;
$obj->gender = 'Male';
$obj->name = 'Tom';

$arr = get_object_vars($obj);
print_r($arr);
?>

The output result is:

Array
(
    [age] => 25
    [gender] => Male
    [name] => Tom
)

3. Notes

When converting Object type data to Array type data, you need to pay attention to the following points Question:

1. If necessary, delete some properties of Object type data during conversion. In some cases, we may want to delete some properties of Object type data before converting it to Array type data. At this point, we can filter the deleted attributes during conversion.
2. During the type conversion process, pay attention to the difference in variable types. When converting to Array type data, some attribute types of Object type data may be implicitly converted to other types (such as string types, integers, etc.). Therefore, you need to pay attention to the difference in variable types when converting.
3. By converting Object type data to Array type data, code readability may be reduced. Compared with Array type data, Object type data has better structure and readability. Therefore, when converting Object type data to Array type data, you need to weigh the priorities of readability and operability.

4. Summary

This article introduces how to convert Object type data in PHP into Array type data to make it easier to operate the data. Through the introduction of this article, we can see that there are various methods for converting Object type data to Array type data, so developers can choose different conversion methods according to specific needs and scenarios.

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