In PHP, the json_decode function can parse a JSON string into an object or array in PHP, while the json_encode function can convert a PHP object or array into a JSON string. But sometimes we need to convert JSON objects into string array objects, what should we do?
Suppose our JSON string looks like this:
{ "name": "Tom", "age": 18, "hobbies": ["reading", "running", "swimming"] }
We can use the following PHP code to convert it into a string array object:
$json = '{"name":"Tom","age":18,"hobbies":["reading","running","swimming"]}'; $data = json_decode($json, true); $keys = array_keys($data); $values = array_values($data); $str_arr = []; for ($i = 0; $i <p>First, we will Pass the JSON string to the json_decode function and set the second parameter to true, which means converting the parsed JSON into an associative array. </p><p>Next, we use the array_keys function to get the key name of the associative array, and use the array_values function to get the value of the associative array. </p><p>Then, we traverse all key names and values through a for loop and determine whether the value is an array. If the value is an array, we will use the json_encode function to convert it to a JSON string; if it is not an array, we will use a cast to convert it to a string. </p><p>Finally, we use the key name as the key and the string as the value to build a new associative array. Using the var_dump function to output the results, you can get the following output: </p><pre class="brush:php;toolbar:false">array(3) { ["name"]=> string(3) "Tom" ["age"]=> string(2) "18" ["hobbies"]=> string(28) "["reading","running","swimming"]" }
As you can see, we successfully converted the JSON object into a string array object. Among them, the key step is to use the json_encode function to convert the array into a JSON string.
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