Make Query

<?php
    require 'init.php' ;
    $query = $_GET["sql"] ;
    $statement = oci_parse($conn, $query);
    oci_execute($statement);
    $rows = array();
    while ($row = oci_fetch_array($statement, OCI_ASSOC+OCI_RETURN_NULLS)) {
    $rows[] = $row ;
    }
    $json = json_encode(array('transactions'=>$rows));
    echo $json ;
?>