Please note, this is a STATIC archive of website www.w3resource.com from 19 Jul 2022, cach3.com does not collect or store any user information, there is no "phishing" involved.
w3resource

PHP JSON Exercises : Decode a JSON string

PHP JSON: Exercise-1 with Solution

Write a PHP script to decode a JSON string.

Sample Solution:

PHP Code:

<?php
$json = 
'{
"uglify-js": "1.3.4"
, "jshint": "0.9.1"
, "recess": "1.1.8"
, "connect": "2.1.3"
, "hogan.js": "2.0.0"
}';
var_dump(json_decode($json));
echo "\n";
var_dump(json_decode($json, true));
?>

Sample Output: 

object(stdClass)#1 (5) {                                    
  ["uglify-js"]=>                                           
  string(5) "1.3.4"                                         
  ["jshint"]=>                                              
  string(5) "0.9.1"                                         
  ["recess"]=>                                              
  string(5) "1.1.8"                                         
  ["connect"]=>                                             
  string(5) "2.1.3"                                         
  ["hogan.js"]=>                                            
  string(5) "2.0.0"                                         
}                                                           
                                                            
array(5) {                                                  
  ["uglify-js"]=>                                           
  string(5) "1.3.4"                                         
  ["jshint"]=>                                              
  string(5) "0.9.1"                                         
  ["recess"]=>                                              
  string(5) "1.1.8"                                         
  ["connect"]=>                                             
  string(5) "2.1.3"                                         
  ["hogan.js"]=>                                            
  string(5) "2.0.0"                                         
}

Flowchart :

Flowchart: Decode a JSON string

PHP Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: PHP JSON Exercises Home.
Next: Write a PHP script to decode large integers.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



PHP: Tips of the Day

How to Sort Multi-dimensional Array by Value?

Try a usort, If you are still on PHP 5.2 or earlier, you'll have to define a sorting function first:

Example:

function sortByOrder($a, $b) {
    return $a['order'] - $b['order'];
}

usort($myArray, 'sortByOrder');

Starting in PHP 5.3, you can use an anonymous function:

usort($myArray, function($a, $b) {
    return $a['order'] - $b['order'];
});

And finally with PHP 7 you can use the spaceship operator:

usort($myArray, function($a, $b) {
    return $a['order'] <=> $b['order'];
});

To extend this to multi-dimensional sorting, reference the second/third sorting elements if the first is zero - best explained below. You can also use this for sorting on sub-elements.

usort($myArray, function($a, $b) {
    $retval = $a['order'] <=> $b['order'];
    if ($retval == 0) {
        $retval = $a['suborder'] <=> $b['suborder'];
        if ($retval == 0) {
            $retval = $a['details']['subsuborder'] <=> $b['details']['subsuborder'];
        }
    }
    return $retval;
});

If you need to retain key associations, use uasort() - see comparison of array sorting functions in the manual

Ref : https://bit.ly/3i77vCC