required_once を使用して構成ファイルを呼び出すデータベース クラスがあります。その中で、define() を使用していくつかの定数を宣言しました。Undefined 定数のエラーが発生し、参照によって new の戻り値を割り当てています。設定ファイルのコードは次のとおりです。
<?php
// Database Constants
defined("DB_SERVER") ? null : define("DB_SERVER", "localhost");
defined("DB_USER") ? null : define("DB_USER", "root");
defined("DB_PASS") ? null : define("DB_PASS", "");
defined("DB_NAME") ? null : define("DB_NAME", "shareysmile");
?>
ここに私のデータベースクラスコードがあります(両方とも同じディレクトリにあるので問題ありません):
<?php
require_once("config.php");
class MySQLDatabase {
private $connection;
public $last_query;
private $magic_quotes_active;
private $real_escape_string_exists;
function __construct() {
$this->open_connection();
$this->magic_quotes_active = get_magic_quotes_gpc();
$this->real_escape_string_exists = function_exists( "mysql_real_escape_string" );
}
public function open_connection() {
$this->connection = mysql_connect(DB_SERVER, DB_USER, DB_PASS);
if (!$this->connection) {
die("Database connection failed: " . mysql_error());
} else {
$db_select = mysql_select_db(DB_NAME, $this->connection);
if (!$db_select) {
die("Database selection failed: " . mysql_error());
}
}
}
public function close_connection() {
if(isset($this->connection)) {
mysql_close($this->connection);
unset($this->connection);
}
}
public function query($sql) {
$this->last_query = $sql;
$result = mysql_query($sql, $this->connection);
$this->confirm_query($result);
return $result;
}
public function escape_value( $value ) {
if( $this->real_escape_string_exists ) { // PHP v4.3.0 or higher
// undo any magic quote effects so mysql_real_escape_string can do the work
if( $this->magic_quotes_active ) { $value = stripslashes( $value ); }
$value = mysql_real_escape_string( $value );
} else { // before PHP v4.3.0
// if magic quotes aren't already on then add slashes manually
if( !$this->magic_quotes_active ) { $value = addslashes( $value ); }
// if magic quotes are active, then the slashes already exist
}
return $value;
}
// "database-neutral" methods
public function fetch_array($result_set) {
return mysql_fetch_array($result_set);
}
public function num_rows($result_set) {
return mysql_num_rows($result_set);
}
public function insert_id() {
// get the last id inserted over the current db connection
return mysql_insert_id($this->connection);
}
public function affected_rows() {
return mysql_affected_rows($this->connection);
}
private function confirm_query($result) {
if (!$result) {
$output = "Database query failed: " . mysql_error() . "<br /><br />";
//$output .= "Last SQL query: " . $this->last_query;
die( $output );
}
}
}
$database = new MySQLDatabase();
?>
問題がわかりません、誰か助けてくれませんか?正確なエラーは次のとおりです。
Deprecated: Assigning the return value of new by reference is deprecated in D:\xampp\php\PEAR\Config.php on line 80
Deprecated: Assigning the return value of new by reference is deprecated in D:\xampp\php\PEAR\Config.php on line 166
Notice: Use of undefined constant DB_SERVER - assumed 'DB_SERVER' in D:\xampp\htdocs\sharesmile\src\database.php on line 18
Notice: Use of undefined constant DB_USER - assumed 'DB_USER' in D:\xampp\htdocs\sharesmile\src\database.php on line 18
Notice: Use of undefined constant DB_PASS - assumed 'DB_PASS' in D:\xampp\htdocs\sharesmile\src\database.php on line 18