PHP Write mysqli class _php tutorial with cached data function

Copy CodeThe code is as follows:
/**
* Mysqli class
*/
Class Db_mysqli {
protected $mysqli;
protected $sql;
protected $rs;
protected $query _num = 0;
protected $fetch _mode = MYSQLI_ASSOC;
protected $cache _dir = './cache/';
protected $cache _time = 1800;
Public function __construct ($dbhost, $dbuser, $dbpass, $dbname) {
$this->mysqli = new Mysqli ($dbhost, $dbuser, $dbpass, $dbname);
if (Mysqli_connect_errno ()) {
$this->mysqli = false;
Echo '

'. Mysqli_connect_error (). '

';
Die ();
} else {
$this->mysqli->set_charset ("UTF8");
}
}
Public Function __destruct () {
$this->free ();
$this->close ();
}
protected function free () {
@ $this->rs->free ();
}
protected function Close () {
$this->mysqli->close ();
}
protected function Fetch () {
return $this->rs->fetch_array ($this->fetch_mode);
}
protected function Getquerysql ($sql, $limit = null) {
if (@preg_match ("/[0-9]+ (, []?[ 0-9]+)?/is ", $limit) &&!preg_match ("/Limit [0-9]+ (, []?[ 0-9]+) $/is ", $sql)) {
$sql. = "LIMIT". $limit;
}
return $sql;
}
protected function Get_cache ($sql, $method) {
Include_once './cache.php ';//If you use __autoload () in the frame, you can not load the file here
$cache = new Cache ($this->cache_dir, $this->cache_time);
$cache _file = MD5 ($sql. $method);
$res = $cache->get_cache ($cache _file);
if (! $res) {
$res = $this $method ($sql);
$cache->set_cache ($cache _file, $res);
}
return $res;
}
Public Function Query_num () {
return $this->query_num;
}
Public Function Set_cache_dir ($cache _dir) {
$this->cache_dir = $cache _dir;
}
Public Function Set_cache_time ($cache _time) {
$this->cache_time = $cache _time;
}
Public Function query ($sql, $limit = null) {
$sql = $this->getquerysql ($sql, $limit);
$this->sql = $sql;
$this->rs = $this->mysqli->query ($sql);
if (! $this->rs) {
echo "

". $this->mysqli->error."

";
Die ();
} else {
$this->query_num++;
return $this->rs;
}
}
Public Function GetOne ($sql) {
$this->query ($sql, 1);
$this->fetch_mode = Mysqli_num;
$row = $this->fetch ();
$this->free ();
return $row [0];
}
Public Function Get_one ($sql) {
return $this->getone ($sql);
}
Public Function Cache_one ($sql) {
$sql = $this->getquerysql ($sql, 1);
return $this->get_cache ($sql, ' getone ');
}
Public Function GetRow ($sql, $fetch _mode = Mysqli_assoc) {
$this->query ($sql, 1);
$this->fetch_mode = $fetch _mode;
$row = $this->fetch ();
$this->free ();
return $row;
}
Public Function Get_row ($sql, $fetch _mode = Mysqli_assoc) {
return $this->getrow ($sql);
}
Public Function Cache_row ($sql) {
$sql = $this->getquerysql ($sql, 1);
return $this->get_cache ($sql, ' getRow ');
}
Public Function GetAll ($sql, $limit = null, $fetch _mode = Mysqli_assoc) {
$this->query ($sql, $limit);
$all _rows = Array ();
$this->fetch_mode = $fetch _mode;
while ($rows = $this->fetch ()) {
$all _rows[] = $rows;
}
$this->free ();
return $all _rows;
}
Public Function Get_all ($sql, $limit = null, $fetch _mode = Mysqli_assoc) {
return $this->getall ($sql);
}
Public Function Cache_all ($sql, $limit = null) {
$sql = $this->getquerysql ($sql, $limit);
return $this->get_cache ($sql, ' getAll ');
}
Public Function insert_id () {
return $this->mysqli->insert_id ();
}
Public function Escape ($STR) {
if (Is_array ($STR)) {
foreach ($str as $key = = $val) {
$STR [$key] = $this->escape ($val);
}
} else {
$str = Addslashes (Trim ($STR));
}
return $str;
}
}
Usage
$db = new Db_mysqli (' localhost ', ' root ', 111222, ' dict ');
$db->set_cache_time (10);
$db->set_cache_dir ('./cache/sql/');
$sql = "SELECT * from Words ORDER by word_id limit 10,10";
$res 1 = $db->get_all ($sql);
$res 2 = $db->cache_all ($sql);
echo $db->query_num (), '
';
?>

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