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In PHP, 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.
In PHP, JSON data is usually parsed into an associative array through the json_decode() function. Once the data is parsed into an array, we can use the PHP array's related functions to process it, such as comparing the differences between two JSON data structures.
Here is a simple example of JSON data parsing:
<?php
$json1 = '{"name": "John", "age": 30, "city": "New York"}';
$json2 = '{"name": "Jane", "age": 30, "city": "New York"}';
$array1 = json_decode($json1, true); // Will JSON Data parsing into PHP Array
$array2 = json_decode($json2, true); // Will另一个 JSON Data parsing into PHP Array
print_r($array1);
print_r($array2);
?>
After parsing JSON data, assuming that we want to compare the differences between these two arrays, we can use array_diff_assoc() to find out the differences between the arrays. This function not only compares values in the array, but also compares key names and value pairs.
<?php
// 比较两个Analysis后的Array
$diff = array_diff_assoc($array1, $array2);
print_r($diff);
?>
In the above code, array_diff_assoc() will return the different parts of array1 and array2 in key-value pairs. Since the value of the name key is different, the returned difference will display the difference part corresponding to the name key.
Suppose we have two JSON data responses returned from URL m66.net , we need to parse them and compare the differences. This can be done by calling the corresponding API and utilizing array_diff_assoc() . Here is an example of simulation:
