Send variable From PHP to AJAX [closed] - php

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I have a php page called posts.php, this page just select all from a database table named posts and display them. Down the page I have a textarea named post. When I press the submit button the AJAX script will send the text from textarea to a page called insert.php. This insert.php gets the submited text and insert it into posts table. How can I do this and how can I upload the posts.php when I have inserted a post into posts table.
Example:
User 123 writes a message in the textarea. He presses submit button. AJAX sends the post to insert.php. Insert.php inserts the post into posts tabel. Posts.php shows the message.

Answer 1

You can do it very easily! Here's a very simple example.
func.js
$(document).on("click", ".submitBtn", function() {
var textareaVal = $(".textarea").val();
$.ajax({
type: "POST",
url: "insert.php",
dataType: "text",
data: { postVar: textareaVal },
success: function(data) {
$(".resultDiv").load("posts.php");
}
});
});
insert.php
// You have to pay attention to AJAX can only invite your file!
if (!empty($_SERVER["HTTP_X_REQUESTED_WITH"]) && strtolower($_SERVER["HTTP_X_REQUESTED_WITH"]) == "xmlhttprequest") {
if (isset($_POST["postVar"])) {
$var = sanitize($_POST["postVar"]); // You need sanitize the data!
// Insert into your table...
}
}
In your posts.php, SELECT datas from your table, but only select the data, without „HTML container”! Your JS file load this datas on your resultDiv box.

Answer 2

I'm not certain why you would need to do this via ajax, but:
$( "#myForm" ).submit(function( event ) {
$.ajax({
type: 'post',
url: '../insert.php' ,
data: { value1: document.getElementById('textarea').value },
success: function () {
alert("yay!");
}
});
});