虽然循环在函数内部返回null - PHP

Question

我正在学习PHP，并且似乎无法弄清楚循环是否可以在函数内运行。

我的代码不在函数内部时工作，但是当我将它包装在函数中时，我无法将其输出。

我尝试输入代理商名称（$ jur）并从数据库中获取与该名称相关联的名称列表。

function jur($conn, $jur){

    // SQL that runs the search in the data base for all employees associated with an agency

    $EmployeeListSQL = "SELECT emp.NAME as NAME, jur.NAME as AGENCY FROM SMARTCM . dbo . EMPMAST as emp
                      inner join SMARTCM . dbo . EMP_TO_JURIS as empjur
                      on emp.UniqueKey = empjur.FK_EMP_KEY
                      inner join SMARTCM . dbo . JURISDICT as jur
                      on empjur.FK_JURIS_KEY = jur.UniqueKey
                      where jur.name = '$jur'";

    $employeeListSET = sqlsrv_query($conn, $EmployeeListSQL);



    // create an array with all the names fetched from the data base

    while($employee = sqlsrv_fetch_array( $employeeListSET, SQLSRV_FETCH_ASSOC)){
        $employeeListArray[] = $employee['NAME'];
    }


    // list all the array items

    foreach($employeeListArray as $employee){
        echo   $employee . "<BR>";
    }
}


// Try to call the function list
jur($conn, 'Girard');