savephoto.php

<?php

header( 'Content-Type: application/json; charset=utf-8' );

setlocale( LC_ALL, 'en_US.UTF8' );
setlocale( LC_TIME, 'ru_RU.UTF8' );
mb_regex_encoding( 'UTF-8' );
mb_internal_encoding( 'UTF-8' );

header( 'Expires: Mon, 26 Jul 1997 05:00:00 GMT' );
header( 'Last-Modified: ' . gmdate( 'D, d M Y H:i:s' ) . ' GMT' );
header( 'Cache-Control: no-cache, must-revalidate' );
header( 'Pragma: no-cache' );

session_name( 'SHOTSSESSID' );
session_set_cookie_params( 0 );

require_once 'functions.php';

$data = $_POST['shot'];
$dir = 'saved';
$files = opendir($dir);
$filename = uniqid(rand(), true) . '.png';
for ($i = 1; $i <= $files.length; $i++) {
    if ($filename === $files[i]) {
			$filename = uniqid(rand(), true) . '.png';
		}
}
$data = base64_decode(preg_replace('#^data:image/\w+;base64,#i', '', $data));
file_put_contents('saved/'.$filename, $data);
$actual_link = "http://".$_SERVER['HTTP_HOST']."/saved/";
$path = $actual_link.$filename;

echo json_encode($path);