(PHP Extension) Modify Parts of JSON Document

Demonstrates how to modify parts of a JSON document. This example uses the following JSON document:

{
   "fruit": [
      	{
         "kind": "apple",
	 "count": 24,
	 "fresh": true,
	 "extraInfo": null,
	 "listA": [ "abc", 1, null, false ],
	 "objectB": { "animal" : "monkey" }
      	},
	{
         "kind": "pear",
	 "count": 18,
	 "fresh": false,
	 "extraInfo": null
	 "listA": [ "xyz", 24, null, true ],
	 "objectB": { "animal" : "lemur" }
	}
    ],
    "list" : [ "banana", 12, true, null, "orange", 12.5, { "ticker": "AAPL" }, [ 1, 2, 3, 4, 5 ] ],
    "alien" : true
}

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();

// Load the JSON from a file.
$success = $json->LoadFile('qa_data/json/modifySample.json');
if ($success != true) {
    print $json->lastErrorText() . "\n";
    exit;
}

// This example will not check for errors (i.e. null / false / 0 return values)...

// Get the "list" array:
// listA is a CkJsonArray
$listA = $json->ArrayOf('list');

// Modify values in the list.

// Change banana to plantain
$success = $listA->SetStringAt(0,'plantain');

// Change 12 to 24
$success = $listA->SetIntAt(1,24);

// Change true to false
$success = $listA->SetBoolAt(2,false);

// Is the 3rd item null?
$bNull = $listA->IsNullAt(3);

// Change "orange" to 32.
$success = $listA->SetIntAt(4,32);

// Change 12.5 to 31.2
$success = $listA->SetNumberAt(5,'31.2');

// Replace the { "ticker" : "AAPL" } object with { "ticker" : "GOOG" }
// Do this by deleting, then inserting a new object at the same location.
$success = $listA->DeleteAt(6);
$success = $listA->AddObjectAt(6);
// tickerObj is a CkJsonObject
$tickerObj = $listA->ObjectAt(6);
$success = $tickerObj->AddStringAt(-1,'ticker','GOOG');

// Replace "[ 1, 2, 3, 4, 5 ]" with "[ "apple", 22, true, null, 1080.25 ]"
$success = $listA->DeleteAt(7);
$success = $listA->AddArrayAt(7);
// aa is a CkJsonArray
$aa = $listA->ArrayAt(7);
$success = $aa->AddStringAt(-1,'apple');
$success = $aa->AddIntAt(-1,22);
$success = $aa->AddBoolAt(-1,true);
$success = $aa->AddNullAt(-1);
$success = $aa->AddNumberAt(-1,'1080.25');

// Get the "fruit" array
// aFruit is a CkJsonArray
$aFruit = $json->ArrayAt(0);

// Get the 1st element:
// appleObj is a CkJsonObject
$appleObj = $aFruit->ObjectAt(0);

// Modify values by member name:
$success = $appleObj->SetStringOf('fruit','fuji_apple');
$success = $appleObj->SetIntOf('count',46);
$success = $appleObj->SetBoolOf('fresh',false);
$success = $appleObj->SetStringOf('extraInfo','developed by growers at the Tohoku Research Station in Fujisaki');

// Modify values by index:
// pearObj is a CkJsonObject
$pearObj = $aFruit->ObjectAt(1);
$success = $pearObj->SetStringAt(0,'bartlett_pear');
$success = $pearObj->SetIntAt(1,12);
$success = $pearObj->SetBoolAt(2,false);
$success = $pearObj->SetStringAt(3,'harvested in late August to early September');

$json->put_EmitCompact(false);
print $json->emit() . "\n";

?>