Multidimensional array PHP-JSON

Try something like this:

//initialize array$myArray = array();//set up the nested associative arrays using literal array notation$firstArray = array("id" => 1, "data" => 45);$secondArray = array("id" => 3, "data" => 54);//push items onto main array with bracket notation (this will result in numbered indexes)$myArray[] = $firstArray;$myArray[] = $secondArray;//convert to json$json = json_encode($myArray);

Here is a shorter way:

$myArray = array();$myArray[] = array("id" => 1, "data" => 45);$myArray[] = array("id" => 3, "data" => 54);//convert to json$json = json_encode($myArray);

This example PHP array is mixed, with the outer level numerically indexed and the second level associative:

<?php// PHP array$books = array(    array(        "title" => "Professional JavaScript",        "author" => "Nicholas C. Zakas"    ),    array(        "title" => "JavaScript: The Definitive Guide",        "author" => "David Flanagan"    ),    array(        "title" => "High Performance JavaScript",        "author" => "Nicholas C. Zakas"    ));?>

In the json_encode output, the outer level is an array literal while the second level forms object literals. This example demonstrates using the JSON_PRETTY_PRINT option with json_encode for more readable output as shown in code comments below:

<script type="text/javascript">// pass PHP array to JavaScript var books = <?php echo json_encode($books, JSON_PRETTY_PRINT) ?>;// output using JSON_PRETTY_PRINT/* var books = [ // outer level array literal    { // second level object literals        "title": "Professional JavaScript",        "author": "Nicholas C. Zakas"    },    {        "title": "JavaScript: The Definitive Guide",        "author": "David Flanagan"    },    {        "title": "High Performance JavaScript",        "author": "Nicholas C. Zakas"    }]; */// how to access console.log( books[1].author ); // David Flanagan</script>