![]() ![]() ![]() Our first example is to find all people who owns a 'Tesla' from our sample JSON. Now we learn how to search a nested JSON for a specific value. So far, we have seen how to access all objects at a particular level. Here is another example to print the number of cars each person has.Įcho( $elem.": ".count($elem)) To print all the names and corresponding cars. If you have an array inside a nested JSON object then use two foreach loops to access the inner array element. To print all the names and corresponding favourite colour.Įcho( $elem." - ".$elem ) You can access this inner JSON object just as you access a multidimensional associative array. For each person, there is a key named favourite whose value is another JSON object. In our example JSON, there are three JSON objects each corresponding to the details about a person. The value of a JSON can be another JSON object. For example, to print all the name and id numbers from our example JSON document:Īccessing Nested objects inside a JSON array To access the objects inside a JSON array, the simplest and easiest method is to use a foreach loop to iterate through the array elements and fetch the data that you need. Note that the second argument in the json_decode function is set to true so that the objects returned will be associative arrays.įor more details on parsing JSON in PHP, read How to parse JSON in PHP Accessing objects inside a JSON array $json_string = file_get_contents($filepath) Firstly read the contents of the text file into a string variable using the file_get_contents() function and then use json_decode() function to convert the JSON string to a PHP variable. "favourite": Ĭonsider that our example JSON is stored in a file named "persons.txt". Let's look at some examples for accessing data a nested JSON document like below. One method is to use recursion just like you access data from a nested array or tree data structure. JSON objects are key-value pairs and there are different methods you can use to access JSON objects from a nested JSON document. "" // Output: Harry PotterĮcho $arr // Output: $20.A JSON document can have JSON objects nested inside other JSON objects. Call the function and print all the valuesĮcho "". ![]() Decode JSON data into PHP associative array format ![]() "name": "Harry Potter and the Goblet of Fire", Assign JSON encoded string to a PHP variable Return array('total' => $count, 'values' => $values) Return total count and values found in array The jsondecode() function is used to decode a JSON object into a PHP object or an associative array. Strings must be enclosed in double quotes " and can contain escape characters such as \n, \t and \. In JSON, keys are always strings, while the value can be a string, number, true or false, null or even an object or an array. Array: This is defined as an ordered list of values.Multiple key/value pairs are separated by a comma. Each object begins with a left curly bracket. Object: This is defined as a collection of key/value pairs (i.e.JSON, like XML, is a text-based format that's easy to write and easy to understand for both humans and computers, but unlike XML, JSON data structures occupy less bandwidth than their XML versions. JSON is a standard lightweight data-interchange format which is quick and easy to parse and generate. JSON stands for Java Script Object Notation. In this tutorial you will learn how to encode and decode JSON data in PHP. ![]()
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