Unable to pass string parameter to php function via ajax

Question

I am making the following jquery ajax call to a codeigniter php function:

    $.ajax({
                        type:"POST",
                        url: "Ajax/getHtml",
                        data: { u : 'http://stackoverflow.com/' },
                        contentType: "application/json; charset=utf-8",
                        dataType: 'html',       
                        success: function(data) {
                            console.log(data);

                        },

                        error: function(jqXHR, textStatus, errorThrown) {
                                console.log('error');
                                console.log(jqXHR,textStatus, errorThrown);
                        }
                    });

The requested php function is :

public function getHtml() {
        var_dump($_POST);
        $url = $_POST['u'];
        $result = file_get_contents($url);
        echo ($result);
}

var_dump($_POST) yields:

array(0) { }

How can I fix this?

setting contentType option is telling the request what data type you are sending to the server, php by default doesnt know how to receive/process json, you would have to read the raw input to get it. Remove the contentType option — Patrick Evans
– Patrick Evans, Commented Jan 25, 2015 at 5:17
you don't need to set the content type, omit that part and it should work fine — Kevin
– Kevin, Commented Jan 25, 2015 at 5:17

Musa · Accepted Answer · 2015-01-25 05:19:48Z

1

Php will not populate the $_POST array if the content type of the request is application/json; charset=utf-8, also you aren't sending json. Just remove the content type line and the proper(default) content type of application/x-www-form-urlencoded will be set.

answered Jan 25, 2015 at 5:19

Musa

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