PHP: Fatal error: Call to undefined method mysqli

Question

Okay I asked a question last week. I got a few answers, several which did not help; however, I decided to recheck all of my connections. That did resolve some problems after I had to check here to make it function. Next was for some reason I did not check my query to make sure it worked in mysql. I also noticed that my version has a way to output the query into PHP code which I did. Now I am stuck with the error code:

Fatal error: Call to undefined method mysqli::SELECT tblConference.colConferenceName, tblSchool.colSchoolName, tblSchool.colClass, tblSurface.colSurfaceName, tblSurface.colSurfaceCompany, tblStadium.colStadiumName, tblStadium.colAddress, tblStadium.colCity, tblStadium.colRegion, tblStadium.colCounty, tblStadium.colCapacity FROM tblStadium, tblConference, tblSurface, tblSchool, tblStadiumSchool WHERE tblConference.colConferenceID = tblSchool.colConferenceID AND tblSurface.colSurfaceID = tblStadium.colSurfaceID AND tblStadium.colStadiumID = tblStadiumSchool.colStadiumID AND tblSchool.colSchoolID = tblStadiumSchool.colSchoolID AND tblSchool.colSchoolName LIKE \\'A%\\' ORDER BY tblSchool.colSchoolName() in C:\\xampp\\htdocs\\stadium\\alpha\\a.php on line 24

Now here is my new code, I will try to make it look halfway decently,

    $mysqli = new mysqli("localhost", "root", "", "dbstadium");
    /* check connection */
      if (mysqli_connect_errno()) {
        printf("Connect failed: %s\n", mysqli_connect_error);
        exit();
        }
    /* your sql query */

$sql = "SELECT tblConference.colConferenceName, tblSchool.colSchoolName, tblSchool.colClass, tblSurface.colSurfaceName, tblSurface.colSurfaceCompany, tblStadium.colStadiumName, tblStadium.colAddress, tblStadium.colCity, tblStadium.colRegion, tblStadium.colCounty, tblStadium.colCapacity FROM tblStadium, tblConference, tblSurface, tblSchool, tblStadiumSchool WHERE tblConference.colConferenceID = tblSchool.colConferenceID AND tblSurface.colSurfaceID = tblStadium.colSurfaceID AND tblStadium.colStadiumID = tblStadiumSchool.colStadiumID AND tblSchool.colSchoolID = tblStadiumSchool.colSchoolID AND tblSchool.colSchoolName LIKE \\'A%\\' ORDER BY tblSchool.colSchoolName";

/* query your db */
if ($result = $mysqli->$sql($sql)) {
    /* fetch associative array */
    while ($row = $sql->fetch_assoc())
    { /* display row */    
        echo '<p>School Name: ' . $row['colSchoolName'] . '</br>Conference: ' . $row['colConferenceName'] . '</br>Class: ' . $row['colClass'] . '</br>Stadium Name: ' . $row['colStadiumName'] . '</br>Address: ' . $row['colAddress'] . '</br>City: ' . $row['colCity'] . '</br>County: ' . $row['colCounty'] . '</br>Region: ' . $row['colRegion'] . '</br>Capacity: ' . $row['colCapacity'] . '</br>Surface Type: ' . $row['colSurfaceName'] . '</br>Surface Company: ' . $row['colSurfaceCompany'] . '</br>Year Installed: ' . $row['colSurfaceYear'] . '</p>';
    }
    /* free result set */
    $result->free();
}
    /* close connection */
    $mysqli->close();

Now I am not sure what the issue is. I been trying to get this to work. BTW just so you know the query and connection should not be an issue. If their is something I am missing just let me know.

Answer 1

There is your problem:

if ($result = $mysqli->$sql($sql)) {

You're basically calling a method with the same name as your SQL statement, ie SELECT tblConference [...] . Such a method doesn't exist, obviously. Rather, try mysqli::query :

if ($result = $mysqli->query($sql)) {

By the way, another error is in this line:

while ($row = $sql->fetch_assoc())

$sql is still your SQL statement. What you want is to iterate over the mysqli_result object, which you've put into the variable $result :

while ($row = $result->fetch_assoc())

Answer 2

This should do it

$mysqli = new mysqli("localhost", "root", "", "dbstadium");
if (mysqli_connect_errno()) { // check connection
    printf("Connect failed: %s\n", mysqli_connect_error);
    exit();
}
    // your sql query 
    $sql = "SELECT tblConference.colConferenceName, tblSchool.colSchoolName, tblSchool.colClass, tblSurface.colSurfaceName, tblSurface.colSurfaceCompany, tblStadium.colStadiumName, tblStadium.colAddress, tblStadium.colCity, tblStadium.colRegion, tblStadium.colCounty, tblStadium.colCapacity FROM tblStadium, tblConference, tblSurface, tblSchool, tblStadiumSchool WHERE tblConference.colConferenceID = tblSchool.colConferenceID AND tblSurface.colSurfaceID = tblStadium.colSurfaceID AND tblStadium.colStadiumID = tblStadiumSchool.colStadiumID AND tblSchool.colSchoolID = tblStadiumSchool.colSchoolID AND tblSchool.colSchoolName LIKE \'A%\' ORDER BY tblSchool.colSchoolName";
        if ($result = $mysqli->query($sql)) { // query your db
            while ($row = $result->fetch_object())// fetch object
            {  // display row    
                echo "<p><div>School Name: {$row->colSchoolName}</div><div>Conference: {$row->colConferenceName}</div><div>Class: {$row->colClass}</div><div>Stadium Name: {$row->colStadiumName}</div><div>Address: {$row->colAddress}</div><div>City: {$row->colCity}</div><div>County: {$row->colCounty}</div><div>Region: {$row->colRegion}</div><div>Capacity: {$row->colCapacity}</div><div>Surface Type: {$row->colSurfaceName}</div><div>Surface Company: {$row->colSurfaceCompany}</div><div>Year Installed: {$row->colSurfaceYear}</div></p>";
            }//end while loop
            $result->free(); // free result set
        }//end if
$mysqli->close(); // close connection