how to fetch data from stored procedure in oracle - json

Question

what i need to fetch data from stored procedures
syntax in sql developer
select abc_web_demo.wwv_json_data.dashboards('abc','7','tt',1211) from dual
returns json string
{"data":[{"logs":7,"to_abc":88,"to_cl":12,"to_me":0}]}
code
$tns = "
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST =ABC)(PORT = 1521))
)
(CONNECT_DATA = (SID = AAA))
)
";
try {
$conn = new PDO("oci:dbname=".$tns, '**', '**');
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
echo 'Connected to database';
} catch(PDOException $e) {
echo 'ERROR: ' . $e->getMessage();
}
$sql = "CALL abc_web_demo.wwv_json_data.dashboards('ABC','79','Y',121221) ";
$stmt = $conn->prepare($sql);
$te=$stmt->execute();
//$stmt = $connection->query("SELECT #NEW_ID");
//$id = $stmt->fetchColumn();
print_r($te);
Problem
i have google & found i need to pass in string in query
like $stmt = $connection->query("SELECT #NEW_ID");
here in my my case i need to pass 4 parameters in procedure.
i new in stored procedures i need help how to pass 4 arguments in procedure .
how to access json response using fetch statement.
i need json repsonse from fetch data.
any help much appreciated
Solution i tried
$output = $conn->query("select 'abc', '7' ")->fetch(PDO::FETCH_ASSOC);
var_dump($output);
Error
SQLSTATE[HY000]: General error: 923 OCIStmtExecute: ORA-00923: FROM keyword not found where expected
when i tried test query it works
$stmt = $conn->prepare("select * from customers");
$st=$stmt->execute();
$result = $stmt->fetch(PDO::FETCH_ASSOC);
print_r($result);

Answer 1

Write your query as follows. The FROM clause is mandatory in Oracle dialect of SQL.
select 'abc', '7' from dual