CODEWITHSUNDEEP
phpjqueryajaxjson
user3057514
user3057514

Reputation: 261

Getting Json returns true or false

I have a switch statement which return true or false and and an if and else statement I then use it to make some more validation.

Because the value is getting send on an input field using ajax. I want PHP to return true or false.

I have try this using JSON and I use an alert to test what I am getting back and its just a lot of html.

$a = isset($_POST['ccode']) ? $_POST['ccode'] : NULL;

    function isValid($Code) {
        switch ($Code){
            case "123":
            case "45545":
             return true;
        default: 
            return false;
        }
    }

if(isValid($a)) {
        $correct = "correct";
       echo json_decode($correct);
    }
    else {
        $incorrect = "incorrect";
        echo json_decode($incorrect);
    }

AJAX

 $('#ccode').blur(function() {
    var code = $(this).val();

  $.ajax({
        type:'POST',
          url: 'index.php',
          dataType: 'json',
          data:{
            ccode:code
          },
          success: function(data) {
          alert(data);
          }
  });

when you see alert(data) I am going to replace it with 

if (data == false) {
//do this
}

});

My code doesn't return true or false from php and in the alert it just output a lot of html from my index page.

What have I done wrong?

Upvotes: 1

Views: 7915

Answers (4)

guy_fawkes
guy_fawkes

Reputation: 965

Replace in your PHP

echo json_decode($incorrect);

to

echo json_encode(array("error"=>false, "message"=>$incorrect));

And then in javascript parse this json.

and do this way in jquery 

if (data.error == false) {
//do this
}

Upvotes: 0

Saiqul Haq
Saiqul Haq

Reputation: 2397

Your $correct variable should be an array like this

$correct = ['isValid'=> true]

And then you encode that

In your success jquery callback function, you can debug it to check result value

alert(data.isValid)

Upvotes: 0

Rohit Awasthi
Rohit Awasthi

Reputation: 686

Replace in your PHP

echo json_decode($incorrect);

to 

echo json_enecode(array("success"=>$incorrect));

And then in javascript parse this json.

Upvotes: 0

Halcyon
Halcyon

Reputation: 57709

Your output is not true or false but "correct" or "incorrect".

If you compare data with those values you'll likely get better results:

if (data === "correct") {
    // correct
} else {
    // incorrect
}

Oh yea, and you're using json_decode instead of json_encode.

Upvotes: 3

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