Can't get PHP variable to JavaScript file using AJAX

Question

While looking at tons of examples of how to get a PHP variable sent to a JavaScript file, I still haven't had success getting it.

My PHP file is:

$title = $json["title"];

echo json_encode($title);

And my JavaScript file app.js is:

$.ajax({
            url : 'index.php',
            type : 'GET',
            data : film,
            dataType : 'json',
            success : function (data) {
                alert(data.title);
                console.log(data.title);
            },
        })

I would like to know the right code to get the PHP $title variable to the ajax call in app.js.

Thanks

bloodyKnuckles · Accepted Answer · 2015-03-31 01:13:07Z

2

For this example there are two files. One has the JQuery ajax method. The other file is a PHP script that returns the requested information.

show_title.html

<!-- JQuery library already loaded -->
<script>

$.ajax({
    url : 'get_title.php', // requesting a PHP script
    dataType : 'json',
    success : function (data) { // data contains the PHP script output
       alert(data.title);
       console.log(data.title);
    },
})

</script>

get_title.php

<?php

$json["title"] = 'a title';
echo json_encode($json);

?>

answered Mar 31, 2015 at 1:13

bloodyKnuckles

12.2k4 gold badges32 silver badges39 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

averroes Over a year ago

does it matter where the php code is placed in the php file? i currently have it in a cURL session and that cURL session closes right after i've echoed the json_encode(); i've tried it outside the session and it still doesn't ring the success console.log

bloodyKnuckles Over a year ago

To narrow down where the problem is, try sending these simple examples, without the CURL. Then you ought to be able to tell if the problem is in your JavaScript, or your CURL session. I tested this example before I posted it and it worked just fine. If you find the problem is in your CURL session, post another question about it.

Kevin · Accepted Answer · 2015-03-31 01:03:30Z

2

If you'd want a .title property on the response, then you should create an array then encode that instead. You got the other way around. Something like this:

PHP

<?php

$title = 'Yahoo!';
$json['title'] = $title;
echo json_encode($json);

answered Mar 31, 2015 at 1:03

Kevin

41.9k12 gold badges57 silver badges72 bronze badges

2 Comments

averroes Over a year ago

does it matter where the php code is placed in the php file? i currently have it in a cURL session and that cURL session closes right after i've echoed the json_encode(); i've tried it outside the session and it still doesn't ring the success console.log

Kevin Over a year ago

yes its okay, as long as the container of the data is defined and is not empty. of course make sure its not empty and you do the encoding and echo at the end (most likely in the final lines of the PHP file)

Collectives™ on Stack Overflow

Can't get PHP variable to JavaScript file using AJAX

2 Answers 2

2 Comments

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related