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

<?php 
class vector implements JsonSerializable { 
    public function __construct(array $arr) { 
        $this->array = $arr; 
    } 

    public function jsonSerialize() { 
        return $this->array; 
    } 
} 

// Declare an array 
$arr = [1, 2, 3, 4, 5]; 

echo("JSON elements:\n"); 

// Convert the array element into JSON
echo json_encode(new vector($arr), JSON_PRETTY_PRINT); 

?>

Output:

JSON elements:
[
    1,
    2,
    3,
    4,
    5
]

Program 2:

php

<?php 
class vector implements JsonSerializable { 
    public function __construct(array $arr) { 
        $this->array = $arr; 
    } 

    public function jsonSerialize() { 
        return $this->array; 
    } 
} 

// Declare an array 
$arr = [
    "x" => "geeks", 
    "y" => "for",
    "z" => "geeks"
]; 

echo("Convert the array element into JSON:\n"); 

// Convert the array element into JSON
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

PHP | JsonSerializable jsonSerialize() Function

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PHP | JsonSerializable jsonSerialize() Function

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