こんにちは、mysql を mysqli に変更しようとしていますが、スクリプトが機能しません。mysqliに変更後
データベース.php
<?php
include("constants.php");
class MySQLDB
{
var $connection; //The MySQL database connection
var $num_active_users; //Number of active users viewing site
var $num_active_guests; //Number of active guests viewing site
var $num_members; //Number of signed-up users
/* Note: call getNumMembers() to access $num_members! */
/* Class constructor */
function MySQLDB(){
/* Make connection to database */
$this->connection= mysqli_connect(DB_SERVER, DB_USER, DB_PASS,DB_NAME);
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$this->num_members = -1;
if(TRACK_VISITORS){
/* Calculate number of users at site */
$this->calcNumActiveUsers();
/* Calculate number of guests at site */
$this->calcNumActiveGuests();
}
}
function confirmUserPass($username, $password){
/* Add slashes if necessary (for query) */
if(!get_magic_quotes_gpc()) {
$username = addslashes($username);
}
/* Verify that user is in database */
$q = "SELECT password FROM ".TBL_USERS." WHERE username = '$username'";
$result = mysqli_query($this->connection,$q);
if(!$result || (mysqli_num_rows($result) < 1)){
return 1; //Indicates username failure
}
/* Retrieve password from result, strip slashes */
$dbarray = mysqli_fetch_array($result);
$dbarray['password'] = stripslashes($dbarray['password']);
$password = stripslashes($password);
/* Validate that password is correct */
if($password == $dbarray['password']){
return 0; //Success! Username and password confirmed
}
else{
return 2; //Indicates password failure
}
}
function confirmUserID($username, $userid){
/* Add slashes if necessary (for query) */
if(!get_magic_quotes_gpc()) {
$username = addslashes($username);
}
/* Verify that user is in database */
$q = "SELECT userid FROM ".TBL_USERS." WHERE username = '$username'";
$result = mysqli_query($this->connection,$q);
if(!$result || (mysqli_num_rows($result) < 1)){
return 1; //Indicates username failure
}
/* Retrieve userid from result, strip slashes */
$dbarray = mysqli_fetch_array($result);
$dbarray['userid'] = stripslashes($dbarray['userid']);
$userid = stripslashes($userid);
/* Validate that userid is correct */
if($userid == $dbarray['userid']){
return 0; //Success! Username and userid confirmed
}
else{
return 2; //Indicates userid invalid
}
}
function usernameTaken($username){
if(!get_magic_quotes_gpc()){
$username = addslashes($username);
}
$q = "SELECT username FROM ".TBL_USERS." WHERE username = '$username'";
$result = mysqli_query($this->connection,$q);
return (mysqli_numrows($result) > 0);
}
function usernameBanned($username){
if(!get_magic_quotes_gpc()){
$username = addslashes($username);
}
$q = "SELECT username FROM ".TBL_BANNED_USERS." WHERE username = '$username'";
$result = mysqli_query($this->connection,$q);
return (mysqli_numrows($result) > 0);
}
function addNewUser($username, $password, $email){
$time = time();
/* If admin sign up, give admin user level */
if(strcasecmp($username, ADMIN_NAME) == 0){
$ulevel = ADMIN_LEVEL;
}else{
$ulevel = USER_LEVEL;
}
$q = "INSERT INTO ".TBL_USERS." VALUES ('$username', '$password', '0', $ulevel, '$email', $time)";
return mysqli_query($this->connection,$q);
}
function updateUserField($username, $field, $value){
$q = "UPDATE ".TBL_USERS." SET ".$field." = '$value' WHERE username = '$username'";
return mysqli_query($this->connection,$q);
}
function getUserInfo($username){
$q = "SELECT * FROM ".TBL_USERS." WHERE username = '$username'";
$result = mysqli_query($this->connection,$q);
/* Error occurred, return given name by default */
if(!$result || (mysqli_num_rows($result) < 1)){
return NULL;
}
/* Return result array */
$dbarray = mysqli_fetch_array($result);
return $dbarray;
}
function getNumMembers(){
if($this->num_members < 0){
$q = "SELECT * FROM ".TBL_USERS;
$result = mysqli_query($this->connection,$q);
$this->num_members = mysqli_num_rows($result);
}
return $this->num_members;
}
function calcNumActiveUsers(){
/* Calculate number of users at site */
$result = mysqli_query($this->connection,"SELECT * FROM ".TBL_ACTIVE_USERS);
$this->num_active_users = mysqli_num_rows($result);
}
function calcNumActiveGuests(){
/* Calculate number of guests at site */
$q = "SELECT * FROM ".TBL_ACTIVE_GUESTS;
$result = mysqli_query($this->connection,$q);
$this->num_active_guests = mysqli_num_rows($result);
}
function addActiveUser($username, $time){
$q = "UPDATE ".TBL_USERS." SET timestamp = '$time' WHERE username = '$username'";
mysqli_query($this->connection,$q);
if(!TRACK_VISITORS) return;
$q = "REPLACE INTO ".TBL_ACTIVE_USERS." VALUES ('$username', '$time')";
mysqli_query($this->connection,$q);
$this->calcNumActiveUsers();
}
/* addActiveGuest - Adds guest to active guests table */
function addActiveGuest($ip, $time){
if(!TRACK_VISITORS) return;
$q = "REPLACE INTO ".TBL_ACTIVE_GUESTS." VALUES ('$ip', '$time')";
mysqli_query($this->connection,$q);
$this->calcNumActiveGuests();
}
function removeActiveUser($username){
if(!TRACK_VISITORS) return;
$q = "DELETE FROM ".TBL_ACTIVE_USERS." WHERE username = '$username'";
mysqli_query($this->connection,$q);
$this->calcNumActiveUsers();
}
function removeActiveGuest($ip){
if(!TRACK_VISITORS) return;
$q = "DELETE FROM ".TBL_ACTIVE_GUESTS." WHERE ip = '$ip'";
mysqli_query($this->connection,$q);
$this->calcNumActiveGuests();
}
function removeInactiveUsers(){
if(!TRACK_VISITORS) return;
$timeout = time()-USER_TIMEOUT*60;
$q = "DELETE FROM ".TBL_ACTIVE_USERS." WHERE timestamp < $timeout";
mysqli_query($this->connection,$q);
$this->calcNumActiveUsers();
}
/* removeInactiveGuests */
function removeInactiveGuests(){
if(!TRACK_VISITORS) return;
$timeout = time()-GUEST_TIMEOUT*60;
$q = "DELETE FROM ".TBL_ACTIVE_GUESTS." WHERE timestamp < $timeout";
mysqli_query($this->connection,$q);
$this->calcNumActiveGuests();
}
function query($query){
return mysqli_query($this->connection,$query);
}
};
/* Create database connection */
$database = new MySQLDB;
?>
index.php
<?php
include("include/database.php");
$result = mysqli_query($database,"SELECT * FROM users");
while($row = mysqli_fetch_array($result))
{
echo $row['username'] . " " . $row['achternaam'];
echo "<br>";
}
mysqli_close($database);
?>
私が持っているエラーは次のとおりです。
Warning: mysqli_query() expects parameter 1 to be mysqli, object given in C:\xampp\htdocs\follow\index.php on line 4
Warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result, null given in C:\xampp\htdocs\follow\index.php on line 6
Warning: mysqli_close() expects paramet er 1 to be mysqli, object given in C:\xampp\htdocs\follow\index.php on line 12
関数の外で $this->connection を使用できないことを知っており、GLOBAL $connection でそれを試しましたが、機能していませんか?