Question

I have a php script in which i have the following function :

<?php
function readXML() {
    $url = $_REQUEST['schemaPath'];

    $xml = simplexml_load_file($url);

    $fields = $xml -> fields -> field;
    GLOBAL $array;
    GLOBAL $c;
    $array = new stdClass;
    foreach($fields as $field->attributes){
        foreach($field->attributes->attributes() as $a => $b){
            if($a == "name") {
                $c = $b;
            }
            if($a == "type") {
                $array -> $c = $b;
            }
        }
    }
    return json_encode($array);
}
echo readXML();
?> 

I am making ajax call in the following way :

$.ajax({
                cache: false,
                url: "readXML.php",
                type: "POST",
                dataType: 'jsonp',
                jsonp: 'jsonp_callback',
                data: { schemaPath: "http://localhost:8983/solr/admin/file/?file=schema.xml" },
                crossDomain: true,
                success:function(data) {
                    if (!data) {
                        alert("Error in processing xml file");
                        return null;
                    } else {                
                        console.log(data);
                    }
                },
                error:function(data) {
                    alert("Error while reading schema file.");
                    $("#loadingStatus").hide();
                }
            });

I am not getting the desired json response format. I get the alert Error while reading schema file in the response. I actually want it be as a key:value pattern like as $c:$b but it is coming like $c:{"0":$b}. How to return the array from the php script such that i can have a valid json response.

Answer 1

I got the solution why on completion of ajax call it was always going to the error function. Here i am doing jsonp in the ajax call but was not handling the same in the php script. To solve this problem and to return a proper response need to add the following in the php script :

if(isset($_REQUEST['jsonp'])) {
        echo $_REQUEST['jsonp'].'('.json_encode($array).')';
    }else{  
        echo json_encode($array);
    }

And to make the response as key:value need to change the $array[$c] = $b; to $array[$c] = (string)$b; along with the change pointed by @EmmanuelG in his answer.