support mysqli when available

classes/db/mysql.php

@@ -20,6 +20,8 @@ class Db_Mysql implements IDb {
 	}
 
 	function escape_string($s, $strip_tags = true) {
+		if ($strip_tags) $s = strip_tags($s);
+
 		return mysql_real_escape_string($s, $this->link);
 	}
 
@@ -54,7 +56,7 @@ class Db_Mysql implements IDb {
 	}
 
 	function last_error() {
-		return mysql_affected_rows($this->link);
+		return mysql_error();
 	}
 
 	function init() {

classes/db/mysqli.php

@@ -0,0 +1,74 @@
+<?php
+class Db_Mysqli implements IDb {
+	private $link;
+
+	function connect($host, $user, $pass, $db, $port) {
+		$this->link = mysqli_connect($host, $user, $pass, $db, $port);
+
+		if ($this->link) {
+			$this->init();
+
+			return $this->link;
+		} else {
+			die("Unable to connect to database (as $user to $host, database $db): " . mysqli_error());
+		}
+	}
+
+	function escape_string($s, $strip_tags = true) {
+		if ($strip_tags) $s = strip_tags($s);
+
+		return mysqli_real_escape_string($this->link, $s);
+	}
+
+	function query($query, $die_on_error = true) {
+		$result = mysqli_query($this->link, $query);
+		if (!$result) {
+			user_error("Query $query failed: " . ($this->link ? mysqli_error($this->link) : "No connection"),
+				$die_on_error ? E_USER_ERROR : E_USER_WARNING);
+		}
+
+		return $result;
+	}
+
+	function fetch_assoc($result) {
+		return mysqli_fetch_assoc($result);
+	}
+
+
+	function num_rows($result) {
+		return mysqli_num_rows($result);
+	}
+
+	function fetch_result($result, $row, $param) {
+		if (mysqli_data_seek($result, $row)) {
+			$line = mysqli_fetch_assoc($result);
+			return $line[$param];
+		} else {
+			return false;
+		}
+	}
+
+	function close() {
+		return mysqli_close($this->link);
+	}
+
+	function affected_rows($result) {
+		return mysqli_affected_rows($this->link);
+	}
+
+	function last_error() {
+		return mysqli_error();
+	}
+
+	function init() {
+		$this->query("SET time_zone = '+0:0'");
+
+		if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
+			$this->query("SET NAMES " . MYSQL_CHARSET);
+		}
+
+		return true;
+	}
+
+}
+?>