How to randomize json - php

Question

I have a randquotes.json file
{
"author": "William Shakespeare",
"quotes": "A brave flea is a flea that can dare to get its breakfast on the lips of a lion."
},
{
"author": "Winston Churchill",
"quotes": "We live with what we get, but we bring life to what we give."
},
{
"author": "Wolfgang von Gothe",
"quotes": "Knowledge is not enough, we must practice it. Intention is not enough, we must do it."
}
Then I want "author" and "quotes" to be generated randomly with php
How?
thanks for help

Answer 1

Assuming you actually have valid a JSON string...
Convert the json to a PHP datatype using json_decode()
find out how large the array is
generate a random number between 0 and array size
Return that array occurance, I did that as a json string again using json_encode()
$json_string = '
[
{
"author": "William Shakespeare",
"quotes": "A brave flea is a flea that can dare to get its breakfast on the lips of a lion."
},
{
"author": "Winston Churchill",
"quotes": "We live with what we get, but we bring life to what we give."
},
{
"author": "Wolfgang von Gothe",
"quotes": "Knowledge is not enough, we must practice it. Intention is not enough, we must do it."
}
]';
$arr = json_decode($json_string);
// How big is the array
$max = count($arr) -1;
$rand_idx = rand(0, $max);
echo json_encode($arr[$rand_idx]);