Caden Pang
asked on
Calling a php file using ajax
I am attempting to create a cookie with information in javascript, which is then decoded by a php file, storing the data into a database. The problem with the cookie is that I can't call the php file from the javascript function using ajax, so I was wondering if there is an alternative method or if I'm doing it all wrong.
Ajax File
PHP File (submit to database)
PHP File (linkdisplay.php)
Ajax File
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script type="text/javascript">
function createCookie(value) { //Called on link click
var expires;
var date = new Date();
date.setTime(date.getTime() + 10000);
expires = "; expires=" + date.toGMTString();
document.cookie = 'History' + "=" + escape(value) + expires + "; path=/";
$(document).ready(function() {
$.ajax({
url: 'Query-Logger.php'
});
});
}
</script>
<?php
require 'linkdisplay.php';
echo '<a class="buy" target="_blank" href="' . $ebayla[ $ebayx ] . '" onclick="javascript:createCookie("' . $header . '");" style="text-decoration:none;">' . $header . '</a>';
?>
PHP File (submit to database)
$user = $_SESSION[ 'loggeduser' ];
$logquery = $_COOKIE[ 'History' ];
/*Submit data to database*/PHP File (linkdisplay.php)
/*code scrapes website and gets header (I know this works)*/
foreach ($lines as $header) {
return $header;
}
Dave Baldwin
I call PHP files with AJAX all the time. But there must be more to your PHP file than what you posted. For starters, you don't have 'session_start' at the top of the file. That is required so your code will access the correct session data.
Dave is correct, aside of the missing session start the $_COOKIE['History'] is read and works for me, for example from an img tag:
PHP receives "testvalue" in $logquery.
Bye, Olaf.
<img onclick="javascript:createCookie('testvalue');"PHP receives "testvalue" in $logquery.
Bye, Olaf.
It also looks like you should be using 'toUTCString' instead of 'toGMTString'. https://www.w3schools.com/jsref/jsref_obj_date.asp
ASKER
I'm sorry but the $session_start code was omitted from my post, and is present on both files. In addition, I have pasted below the code for calling the function, which I believe may be the source of my problem.
<?php
echo <a target="_blank" href="http://www.example.com" onclick="javascript:createCookie("' . $header . '");" style="text-decoration:none;">' . $header . '</a>';
?>
$session_start ? session_start ();
if $header come from server side why do you need to send it back one more time to the server ?
the server build the page with its value, it should be able to get it one more time
you can also set cookie before sending anything to browser, just after $session_start() to overwrite a cookie with the same name
of course you can read cookie on page reload or change
the server build the page with its value, it should be able to get it one more time
you can also set cookie before sending anything to browser, just after $session_start() to overwrite a cookie with the same name
of course you can read cookie on page reload or change
ASKER
Sorry again, I meant session_start();, I had a little brain fart there. As for the comment by leakim971, the data comes from a separate php file that I have updated to my original answer.
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