experimental singleton-based Db connection

classes/db/mysql.php

@@ -0,0 +1,59 @@
+<?php
+class Db_Mysql implements IDb {
+	private $link;
+
+	function connect($host, $user, $pass, $db, $port) {
+		$this->link = mysql_connect($host, $user, $pass);
+		if ($this->link) {
+			$result = mysql_select_db($db, $this->link);
+			if (!$result) {
+				die("Can't select DB: " . mysql_error($this->link));
+			}
+			return $this->link;
+		} else {
+			die("Unable to connect to database (as $user to $host, database $db): " . mysql_error());
+		}
+	}
+
+	function escape_string($s, $strip_tags = true) {
+		return mysql_real_escape_string($s, $this->link);
+	}
+
+	function query($query, $die_on_error = true) {
+		$result = mysql_query($query, $this->link);
+		if (!$result) {
+			$query = htmlspecialchars($query);
+			if ($die_on_error) {
+				die("Query <i>$query</i> failed: " . ($this->link ? mysql_error($link) : "No connection"));
+			}
+		}
+		return $result;
+	}
+
+	function fetch_assoc($result) {
+		return mysql_fetch_assoc($result);
+	}
+
+
+	function num_rows($result) {
+		return mysql_num_rows($result);
+	}
+
+	function fetch_result($result, $row, $param) {
+		return mysql_result($result, $row, $param);
+	}
+
+	function close() {
+		return mysql_close($this->link);
+	}
+
+	function affected_rows($result) {
+		return mysql_affected_rows($this->link);
+	}
+
+	function last_error() {
+		return mysql_affected_rows($this->link);
+	}
+
+}
+?>