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HomeBackend DevelopmentPHP ProblemHow to convert php array object to array

In PHP development, we often encounter situations where we need to convert array objects into arrays. This situation usually occurs when the results are output in the form of an array after data query and operation. This article will introduce how to convert an array object into an array in PHP.

  1. Traversal method

The traversal method is a common way to convert an array object into an array. By using a foreach loop, we can read each element in the object and store them in the target array.

The implementation code is as follows:

$result = [];
foreach ($object as $key => $value) {
    $result[$key] = $value;
}

This method is simple and easy to understand, but when the amount of data is large, the time cost of traversal is high, which may affect program performance.

  1. Type conversion
    In the PHP language, we can convert an object into an array by forcing type conversion. This method is relatively simple to use. You only need to add "(array)" before the object to convert the object into an array.

The implementation code is as follows:

$array = (array) $object;

However, this type conversion method is often limited and cannot obtain some private properties and methods in the object, so special attention should be paid when using it.

  1. json_encode and json_decode
    Using the json_encode and json_decode functions is also a common way to convert objects into arrays. Json is a lightweight data interaction format. Json strings can be easily transmitted and parsed in JavaScript, and can also be easily parsed in PHP.

The implementation code is as follows:

$json = json_encode($object); //将对象转换为JSON字符串
$array = json_decode($json, true); //将JSON字符串转换为数组

This method has better readability and parsing performance, and is an excellent conversion method.

  1. get_object_vars
    get_object_vars is a function in PHP used to obtain all member variables (properties) of a specified object. This function returns all properties of the called object and their values. The way to convert an object into an array using get_object_vars is as follows:

The implementation code is as follows:

$array = get_object_vars($object);

Although this method is simple, there may be some potential problems. The get_object_vars function can only obtain the public attributes of the object, and the private attributes of the object cannot be obtained, so pay special attention when using it.

To sum up, there are many ways to convert array objects into arrays in PHP. When we use it, we should choose the appropriate method to convert according to the actual situation to ensure the efficiency and reliability of the program. sex.

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