<?php

// Declare multi-dimensional array
$value = array(
"name"=>"GFG",
array(
"email"=>"abc@gfg.com",
"mobile"=>"XXXXXXXXXX"
)
);

// Use json_encode() function
$json = json_encode($value);

// Display the output
echo($json);

?>






Output:{"name":"GFG","0":{"email":"abc@gfg.com","mobile": "XXXXXXXXXX"}}