如何使用AJAX将Javascript数组传递给PHP文件？

Question

I have to pass a Javascript arry to a PHP file while AJAX call.

Below is my js array:

var myArray = new Array("Saab","Volvo","BMW");

This JS code has to pass JS array to PHP file using AJAX request and will show count of array.

function ProcessAJAXRequest()
{
    $.ajax
    ({
        type: "POST",
        url: "myphpfile.php",
        data: {"id" : 1, "myJSArray" : myArray},
        success: function (data) 
        {
            alert(data);
        }
    });
}

This myphpfile.php file has to return the count of the array

<?php 
    $myPHPArray = $_POST["myJSArray"];
    echo count($myPHPArray);
 ?>

There is error in PHP file. I am getting undefined index: myPHPArray. How should acheive my required functionality?

Answer 1

Convert js array in json format by JSON.stringify

function ProcessAJAXRequest()
{
    $.ajax
    ({
        type: "POST",
        url: "myphpfile.php",
        data: {"id" : 1, "myJSArray" : JSON.stringify(myArray)},
        success: function (data) 
        {
            alert(data);
        }
    });
}

And In the PHP use json_decode function to get value in array

json_decode($_POST["myJSArray"]);