How to retrieve json data from php

Question

i want to retrive json data from php with ajax and output it for test. but it did not work.

Client index.php

<html>
<head>
<title>kakak</title>
</head>
<body>
<p id="demo"></p>

<script>

var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
        myObj = JSON.parse(this.responseText);
        document.getElementById("demo").innerHTML = myObj.name;
    }
};
xmlhttp.open("GET", "json.php", true);
xmlhttp.send();

</script>
</body>
</html>

And this's json.php already have object.

<?php

$myArray = ["name" => "john", "age" => 30, "city" => "Japan"];

$myObj = json_encode($myArray);

?>

I want to retrieve object name but it dont ouput anything.

@TheCodesee what do you mean anyway? object i want retrieve in json.php. — Bandarbola855
– Bandarbola855, Commented Mar 12, 2017 at 9:07
@TheCodesee {"name":"john","age":30,"city":"Japan"} this's the object. — Bandarbola855
– Bandarbola855, Commented Mar 12, 2017 at 9:11
@hossam i already use it in my ajax call. but it return nothing. can u look my client code? — Bandarbola855
– Bandarbola855, Commented Mar 12, 2017 at 9:13

Pranav C Balan · Accepted Answer · 2017-03-12 09:15:33Z

3

You need to echo the JSON string in PHP code.

echo $myObj;

Final code would be:

<?php

$myArray = ["name" => "john", "age" => 30, "city" => "Japan"];
$myObj = json_encode($myArray);
echo $myObj;
// or directly
// echo json_encode($myArray);
?>

answered Mar 12, 2017 at 9:15

Pranav C Balan

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2 Comments

Bandarbola855 Over a year ago

thanks, by the way. by your respective. is it safe to use json data in client side? i plan to convert mysql database to json and play in client side for validating data when login and activation. is it safe?

Pranav C Balan Over a year ago

@jarwobangun : what you mean by "client side for validating" ?

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