PHP | JsonSerializable jsonSerialize() Function
Last Updated :
27 Sep, 2019
The JsonSerializable::jsonSerialize() function is an inbuilt function in PHP which is used to serialize the JSON object to a value that can be serialized natively by using json_encode() function.
Syntax:
mixed JsonSerializable::jsonSerialize( void )
Parameters: This function does not accept any parameters.
Return Value: This function returns the data which is serialized by json_encode() function.
Below programs illustrate the JsonSerializable::jsonSerialize() function in PHP:
Program 1:
<?php
class vector implements JsonSerializable {
public function __construct( array $arr ) {
$this -> array = $arr ;
}
public function jsonSerialize() {
return $this -> array ;
}
}
$arr = [1, 2, 3, 4, 5];
echo ( "JSON elements:\n" );
echo json_encode( new vector( $arr ), JSON_PRETTY_PRINT);
?>
|
Output:
JSON elements:
[
1,
2,
3,
4,
5
]
Program 2:
<?php
class vector implements JsonSerializable {
public function __construct( array $arr ) {
$this -> array = $arr ;
}
public function jsonSerialize() {
return $this -> array ;
}
}
$arr = [
"x" => "geeks" ,
"y" => "for" ,
"z" => "geeks"
];
echo ( "Convert the array element into JSON:\n" );
echo json_encode( new vector( $arr ), JSON_PRETTY_PRINT);
?>
|
Output:
Convert the array element into JSON:
{
"x": "geeks",
"y": "for",
"z": "geeks"
}
Reference: https://www.php.net/manual/en/jsonserializable.jsonserialize.php
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