PHP class to JSON on several levels - php

Question

I have a PHP class I would like to transform in a JSON on several levels like this type:
{"interface":{"Version":"0"},"Container":[{"id":"1","Element":[{"text":"Test","id":"0"},{"text":"Toto","id":"1"}]}]}
In my PHP class I have a function who returns the JSON of my private attributes who are arrays:
return (json_encode((get_object_vars($this)), JSON_UNESCAPED_UNICODE));
Private attributes of my class:
private $interface = '';
private $Container = array(array('id' => '1'));
private $Element = array('text' => 'Test', 'id' => '0');
Do you know how I could have a JSON like above ?
In pleasure to read you.

Answer 1

Not sure about your class members but as long as they are accessible you can generate the JSON string. Below if the example of this
$Contenant = array(array('id' => '1'));
$Element = array('text' => 'Test', 'id' => '0');
$json = json_encode(array('inerrface'=>array(
'content'=>$Contenant,
"Element"=>$Element
)
)
);
echo $json ;

Answer 2

You could implement the IteratorAggregate interface like in the following example
class YourClass implements IteratorAggregate {
protected $member1 = array();
protected $member2 = array();
...
public function getIterator() {
$tmpArr = array();
// create the structure you want in $tmpArr
return new ArrayIterator($tmpArr);
}
}
$myClass = new MyClass();
$iterator = $myClass->getIterator();
$encodedData = json_encode($iterator);
As of PHP5.4 you have the JsonSerializable interface ready to use. With this interface, you cann use direct modifications like in the example given in: http://de2.php.net/manual/en/jsonserializable.jsonserialize.php
have fun! ;)

Answer 3

This will get you started, take a look at the constructor what data input requires. You could make a private function doing the same thing, assigning your values to the structure and then printing it:
class Test{
private $data;
public function __construct($version = 0, $records = array()){
$data['interface'] = array('Version' => $version);
$data['Container'] = array();
for ($i = 0; $i < count($records); $i++) {
$data['Container'][$i] = $records[$i];
}
// your test input
print_r(json_decode('{"interface":{"Version":"0"},"Container":[{"id":"1","Element":[{"text":"Test","id":"0"},{"text":"Toto","id":"1"}]}]}',true));
// actual input
print_r($data);
// printing our actual data as json string
echo json_encode($data);
}
public function __destruct(){
}
}
$element1 = array('text' => 'Test', 'id' => 0);
$element2 = array('text' => 'Toto', 'id' => 1);
$elements = array($element1, $element2);
$record = array('id' => 1, 'element' => $elements);
$records = array($record);
new Test(0, $records);

Answer 4

You need to structure it, working example: example
class test {
private $interface = '';
private $Contenant = array(array('id' => '1'));
//private $Element = array(array('text' => 'Test', 'id' => '0'));
public function json(){
$this->Contenant = array(
array('id' => '1',
'Element' => array(array('text' => 'Test', 'id' => '0'))
),
);
return json_encode((get_object_vars($this)), JSON_UNESCAPED_UNICODE);
}
}
$t = new test();
$encode = $t->json();
echo $encode;
OUTPUT
{"interface":"","Contenant":[{"id":"1","Element":[{"text":"Test","id":"0"}]}]}