(PHP Extension) JSON: Nested Array

Here we have a JSON object that contains nested arrays. This example demonstrates how to access the contents of the nested arrays.

{
 "numbers" : [ 
    ["even", 2, 4, 6, 8], 
    ["prime", 2, 3, 5, 7, 11, 13] 
  ] }

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

$json = new CkJsonObject();

// This is the above JSON with whitespace chars removed (SPACE, TAB, CR, and LF chars).
// The presence of whitespace chars for pretty-printing makes no difference to the Load
// method. 
$jsonStr = '{ \'numbers\' : [ [\'even\', 2, 4, 6, 8], [\'prime\', 2, 3, 5, 7, 11, 13] ] }';

$success = $json->Load($jsonStr);
if ($success != true) {
    print $json->lastErrorText() . "\n";
    exit;
}

// Get the value of the "numbers" object, which is an array that contains JSON arrays.
// outerArray is a CkJsonArray
$outerArray = $json->ArrayOf('numbers');
if ($json->get_LastMethodSuccess() == false) {
    print 'numbers array not found.' . "\n";
    exit;
}

$numArrays = $outerArray->get_Size();

for ($i = 0; $i <= $numArrays - 1; $i++) {

    // innerArray is a CkJsonArray
    $innerArray = $outerArray->ArrayAt($i);

    // The first item in the innerArray is a string
    print $innerArray->stringAt(0) . ':' . "\n";

    $numInnerItems = $innerArray->get_Size();

    for ($j = 1; $j <= $numInnerItems - 1; $j++) {

        print '  ' . $innerArray->IntAt($j) . "\n";

    }

}


?>