使用jquery的$ .POST（）方法在PHP页面上不接收数据

Question

My POST variable at PHP page is always empty still after clicking on submit button. I send data from a javascript page to php page.

Javascript code:

$('#btnSubmit').click(function(){
    if(quantityArray[j] == undefined){
        alert("Empty Form can not be submitted!");
    }
    else {
        $.post('insert_man_order.php',{ total_price: quantityArray[j] }, function(data){
            alert(data);
        });
    }
});

The PHP code where i should receive the value of variable total_price is:

if(isset($_POST['total_price'])){
        $price = $_POST['total_price'];
    }
    else{
        echo "No data recieved";
    }

One more thing here.. I have written alert by passing data into it in $.post function and it works perfect. So if data is received perfectly after passing it to another page than whats the problem in receiving it at another page?

Answer 1

Instead of

if (isset($_POST['total_price'])) {
        $price = $_POST['total_price'];
}
else {
        echo "No data recieved";
}

do this

if (isset($_POST['total_price'])) {
        echo $_POST['total_price'];
}
else {
        echo "No data received";
}

you must print the data to make an ajax response.