PHP Extension

Call a JavaScript Function Returning an Object

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Demonstrates how to call a JavaScript function that returns an object. PHP Extension

<?php

include("chilkat.php");

$success = false;

// This is the JavaScript function we'll call:

// function getSettings() {
//     return {
//         theme: "dark",
//         notifications: true,
//         version: 1.0
//     };
// }

$sbScript = new CkStringBuilder();
$sbScript->Append('function getSettings() {');
$sbScript->Append('    return {');
$sbScript->Append('        theme: \'dark\',');
$sbScript->Append('        notifications: true,');
$sbScript->Append('        version: 1.0');
$sbScript->Append('    };');
$sbScript->Append('}');

$js = new CkJs();

$result = new CkJsonObject();
$result->put_EmitCompact(false);

// Call Eval to add the function to the context's global object
$success = $js->Eval($sbScript,$result);
if ($success == false) {
    // Examine the result for an exception.
    print $result->emit() . "\n";

    // Also examine the LastErrorText.
    print $js->lastErrorText() . "\n";
    exit;
}

// ------------------------------------------------------------------------------
// Call the function getSettings()

$funcCall = new CkJsonObject();

// Create JSON specifying the function name and arguments
// The function has no arguments, so we only specify the name.

// {
//   "name": "getSettings",
// }

$funcCall->UpdateString('name','getSettings');

$success = $js->CallFunction($funcCall,$result);
if ($success == false) {
    // Examine the result for an exception.
    print $result->emit() . "\n";

    // Also examine the LastErrorText.
    print $js->lastErrorText() . "\n";
    exit;
}

print $result->emit() . "\n";

// Output:
// {
//   "type": "object",
//   "value": {
//     "theme": "dark",
//     "notifications": true,
//     "version": 1
//   }
// }

// Examine the object's members
print 'theme: ' . $result->stringOf('value.theme') . "\n";
print 'notifications: ' . $result->BoolOf('value.notifications') . "\n";
print 'version: ' . $result->IntOf('value.version') . "\n";

// Output:
// theme: dark
// notifications: True
// version: 1

?>