Messaage (array) php to ajax with [echo json_encode'] not show data - php

Question

I'm trying to send an array of data from PHP to ajax. I'm using echo json_encode to do it. When I do that, I try 'console.log(data)' to see the response data but it not show anything. How can I get it to display the data? I really don't know what I'm missing here. I have this script:
var scard = $('#cardid').val();
$.ajax({
type: 'GET',
url: 'cardapi.php?scard=' + scard,
success: function (data) {
console.log($.parseJSON(data));
console.log(data);
}
});
And here is my code for cardapi.php
if(isset($_GET["scard"])){
$scard = $_GET["scard"];
$data = array();
$sql = "SELECT * FROM training_record WHERE cardref_no='$scard'";
$q = sqlsrv_query($conn, $sql);
while($rw = sqlsrv_fetch_array($q, SQLSRV_FETCH_ASSOC)){
array_push($data,[
"employee_no" => $rw["employee_no"],
"dept_id" => $rw["dept_id"],
"name_th" => $rw["name_th"],
"surname_th" => $rw["surname_th"],
"signed_status" => 1,
]);
}
echo json_encode($data);
}
So I try to follow this echo json_encode() not working via ajax call
It still not show anything. Please tell me why?
Thank you.

Answer 1

You may try the following:
Always check the result from the sqlsrv_query() execution.
Always try to use parameterized statements. Function sqlsrv_query() does both statement preparation and statement execution, and can be used to execute parameterized queries.
Check the result from the json_encode() call.
Fix the typing errors ("signed_status" => 1, should be "signed_status" => 1 for example).
Sample script, based on your code:
<?php
if (isset($_GET["scard"])) {
$scard = $_GET["scard"];
$data = array();
$sql = "SELECT * FROM training_record WHERE cardref_no = ?";
$params = array($scard);
$q = sqlsrv_query($conn, $sql, $params);
if ($q === false) {
echo "Error (sqlsrv_query): ".print_r(sqlsrv_errors(), true);
exit;
}
while ($rw = sqlsrv_fetch_array($q, SQLSRV_FETCH_ASSOC)) {
$data[] = array(
"employee_no" => $rw["employee_no"],
"dept_id" => $rw["dept_id"],
"name_th" => $rw["name_th"],
"surname_th" => $rw["surname_th"],
"signed_status" => 1
);
}
$json = json_encode($data);
if ($json === false) {
echo json_last_error_msg();
exit;
}
echo $json;
}
?>