Processing JSON data is a common task, especially when we need to fetch or transfer data from the API. One of the common requirements is to filter out the specified key-value pairs in JSON, which can usually be processed by converting JSON to a PHP array and then using the corresponding functions. This article will introduce how to combine the json_decode() and array_diff_key() functions to effectively filter out specific key-value pairs in JSON data.

The array_diff_assoc() function is used to compare two arrays and return all elements in the first array that are different in the key name and key value from the second array. When processing JSON data, we usually parse it into a PHP array, and then we can use array_diff_assoc() for differential comparisons. This article will use actual cases to show how to use array_diff_assoc() in combination with JSON data structures to compare the parsed differences.

How to convert PHP's array_count_values ​​statistical results to JSON format for convenient front-end display?

In PHP programming, the array_combine function is used to combine two numbers into an associative array, with the elements of the first array as keys and the elements of the second array as values. But in some scenarios, especially when we use JSON data, we may encounter some common errors. This article will analyze the possible errors that may occur when using the array_combine function and provide corresponding solutions.

In PHP programming, when processing JSON data, you often encounter scenarios where large arrays need to be segmented and batched. To improve processing efficiency, we can use PHP's built-in array_chunk function to split a large array into multiple small arrays, thereby avoiding memory overflow or increasing processing speed. This article will introduce how to use the array_chunk function to batch segment the array and improve efficiency when processing JSON data.

In daily development, we often obtain JSON data from third-party interfaces. However, the case format of key names in the data returned by these interfaces is inconsistent, some start with capital, and some are all capital or all lower case. This inconsistent key name format will cause a lot of trouble in the subsequent processing of data, such as field extraction, unified mapping, array conversion to objects, etc., which may make errors or become lengthy.

In PHP development, processing XML data is a common requirement, especially when docking with legacy systems or reading certain APIs. Although JSON is more popular now, there is still a lot of data provided in XML. To facilitate front-end processing or subsequent processing, we often need to convert XML to JSON format.