(PHP Extension) Loading and Parsing a JSON Array

A JSON array is JSON that begins with "[" and ends with "]". For example, this is a JSON array that contains 3 JSON objects.

[{"name":"jack"},{"name":"john"},{"name":"joe"}]

A JSON object, however, is JSON that begins with "{" and ends with "}". For example, this JSON is an object that contains an array.

{"pets":[{"name":"jack"},{"name":"john"},{"name":"joe"}]}

This example shows how loading a JSON array is different than loading a JSON object.

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");

$strJsonArray = '[{\'name\':\'jack\'},{\'name\':\'john\'},{\'name\':\'joe\'}]';

$strJsonObject = '{\'pets\':[{\'name\':\'jack\'},{\'name\':\'john\'},{\'name\':\'joe\'}]}';

// A JSON array must be loaded using JsonArray:
$jsonArray = new CkJsonArray();
$jsonArray->Load($strJsonArray);

// Examine the values:
$i = 0;
while ($i < $jsonArray->get_Size()) {
    // jsonObj is a CkJsonObject
    $jsonObj = $jsonArray->ObjectAt($i);
    print $i . ': ' . $jsonObj->stringOf('name') . "\n";

    $i = $i + 1;
}

// Output is:

// 	0: jack
// 	1: john
// 	2: joe

// A JSON object must be loaded using JsonObject
$jsonObject = new CkJsonObject();
$jsonObject->Load($strJsonObject);

// Examine the values:
$i = 0;
$numPets = $jsonObject->SizeOfArray('pets');
while ($i < $numPets) {
    $jsonObject->put_I($i);
    print $i . ': ' . $jsonObject->stringOf('pets[i].name') . "\n";
    $i = $i + 1;
}

// Output is:

// 	0: jack
// 	1: john
// 	2: joe

?>