PHP Extension

Call a JavaScript Function Returning an Array

See more JavaScript Examples

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

<?php

include("chilkat.php");

$success = false;

//  ----------------------------------------------------------------------------------
//  The Javascript functions called in this example are shown at the bottom of this page.
//  -----------------------------------------------------------------------------------

$sbScript = new CkStringBuilder();
$success = $sbScript->LoadFile('js_function_returning_array.js','utf-8');
if ($success == false) {
    print $sbScript->lastErrorText() . "\n";
    exit;
}

$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 each function

$funcCall = new CkJsonObject();

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

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

$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": "array",
//    "value": [
//      "Monday",
//      "Tuesday",
//      "Wednesday",
//      "Thursday",
//      "Friday"
//    ]
//  }

//  Access each array value..
$count = $result->SizeOfArray('value');
$i = 0;
while ($i < $count) {
    $result->put_I($i);
    print $result->stringOf('value[i]') . "\n";
    $i = $i + 1;
}

//  ------------------------------------------------------------------------------
//  Call the getRange(start,end) function

$funcCall->Clear();
$funcCall->UpdateString('name','getRange');
$funcCall->UpdateInt('args[0]',14);
$funcCall->UpdateInt('args[1]',21);
$success = $js->CallFunction($funcCall,$result);
print $result->emit() . "\n";

//  Output:
//  {
//    "type": "array",
//    "value": [
//      14,
//      15,
//      16,
//      17,
//      18,
//      19,
//      20,
//      21
//    ]
//  }

$count = $result->SizeOfArray('value');
$i = 0;
while ($i < $count) {
    $result->put_I($i);
    print $result->IntOf('value[i]') . "\n";
    $i = $i + 1;
}

//  ------------------------------------------------------------------------------
//  Call the getEmployees() function

$funcCall->Clear();
$funcCall->UpdateString('name','getEmployees');
$success = $js->CallFunction($funcCall,$result);
print $result->emit() . "\n";

//  Output:
//  {
//    "type": "array",
//    "value": [
//      {
//        "id": 101,
//        "name": "Alice",
//        "role": "Dev"
//      },
//      {
//        "id": 102,
//        "name": "Bob",
//        "role": "Manager"
//      }
//    ]
//  }

$count = $result->SizeOfArray('value');
$i = 0;
while ($i < $count) {
    $result->put_I($i);
    print 'name: ' . $result->stringOf('value[i].name') . "\n";
    print 'role: ' . $result->stringOf('value[i].role') . "\n";
    print 'id: ' . $result->IntOf('value[i].id') . "\n";
    print '' . "\n";
    $i = $i + 1;
}


?>

JavaScript

function getDays() {
    return ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday"];
}

function getRange(start, end) {
    var arr = [];
    for (var i = start; i <= end; i++) {
        arr.push(i);
    }
    return arr;
}
// Usage: getRange(1, 5) -> [1, 2, 3, 4, 5]

function getEmployees() {
    return [
        { id: 101, name: "Alice", role: "Dev" },
        { id: 102, name: "Bob", role: "Manager" }
    ];
}