Sending image data using AJAX and store on server - php

Question

PHP isn't receiving data from ajax, I am trying to create image by using canvas HTML5 and store it on my server using PHP, but when I do, I dont receive anything.
image.php:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>
<canvas width="800" height="420" id="canvas"></canvas>
<script>
var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
var img = loadImage('images/quizes/sim.png' ,main);
var img1 = loadImage('images/users/alfred.jpg', main);
var img2 = loadImage('images/users/brynjar.jpg', main);
var imagesLoaded = 0;
function main() {
imagesLoaded += 1;
if(imagesLoaded == 3) {
ctx.drawImage(img, 0, 0, 800, 420);
ctx.drawImage(img1, 0, 0, 320, 320);
ctx.drawImage(img2, 480, 0, 320, 320);
}
}
function loadImage(src, onload) {
var img = new Image();
img.onload = onload;
img.src = src;
return img;
}
var dataURL = canvas.toDataURL();
alert(dataURL);
$.ajax({
type: "POST",
url: "script.php",
data: {
imgBase64: dataURL
}
}).done(function(o) {
console.log('saved');
// If you want the file to be visible in the browser
// - please modify the callback in javascript. All you
// need is to return the url to the file, you just saved
// and than put the image in your browser.
});
</script>
And I also have Script.php:
$img = $_POST['data'];
$img = str_replace('data:image/png;base64,', '', $img);
$img = str_replace(' ', '+', $img);
$fileData = base64_decode($img);
//saving
$fileName = 'photo.png';
file_put_contents($fileName, $fileData);
But when I run image.php, $_post['data'] doesn't pick up any data.

Answer 1

You should read data from $_POST['imgBase64'] variable.