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localSQL.php
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localSQL.php
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<?php
/**
*
*/
class LocalSQL
{
public $DB_HOST;
public $DB_USER;
public $DB_PASSWORD;
private $DB;
public function __construct(string $host, string $user, string $password) {
$this->DB_HOST = $host;
$this->DB_USER = $user;
$this->DB_PASSWORD = $password;
$this->DB = new mysqli($host, $user, $password);
}
public function openDB(string $name) {
$name = __san__($name, FALSE);
$DB = $this->DB;
$exist = $DB->query(
"SELECT SCHEMA_NAME FROM
INFORMATION_SCHEMA.SCHEMATA WHERE
SCHEMA_NAME='$name'")
->num_rows>0;
if ($exist) {
return __openDB__($name, $this, $DB);
} else {
try {
$DB->query("CREATE DATABASE `$name`");
return __openDB__($name, $this, $DB);
} catch (Exception $Err) {
throw new Exception("Error while attempting to create DATABASE");
}
}
}
public function hasDB(string $name) {
$name = __san__($name, FALSE);
$DB = $this->DB;
$exist = $DB->query(
"SELECT SCHEMA_NAME FROM
INFORMATION_SCHEMA.SCHEMATA WHERE
SCHEMA_NAME='$name'")
->num_rows;
if ($exist > 0) {
return TRUE;
} else {
return FALSE;
}
}
public function removeDB(string $name) {
$name = __san__($name, FALSE);
$result = FALSE;
$DB = $this->DB;
$exist = $DB->query(
"SELECT SCHEMA_NAME FROM
INFORMATION_SCHEMA.SCHEMATA WHERE
SCHEMA_NAME='$name' AND SCHEMA_NAME NOT IN ('mysql', 'information_schema', 'performance_schema', 'sys')")
->num_rows > 0;
if ($exist) {
$result = $DB->query("DROP DATABASE `$name`");
}
return $result;
}
public function keys() {
$DB = $this->DB;
$result = $DB->query("SHOW DATABASES");
$arr = [];
if ($result->num_rows > 0) {
while ($n = $result->fetch_assoc()) {
array_push($arr, $n["Database"]);
}
$result->free();
}
return $arr;
}
public function removeAllDB() {
$DB = $this->DB;
$query = "SELECT schema_name FROM information_schema.schemata WHERE schema_name NOT IN ('mysql', 'information_schema', 'performance_schema', 'sys')";
$result = $DB->query($query);
if ($result) {
while ($row = $result->fetch_assoc()) {
$db_name = $row['schema_name'];
$DB->query("DROP DATABASE `$db_name`");
}
$result->free();
return TRUE;
}
}
public function localStorage(string $name){
return $this->openDB("localStorage")->openTable($name);
}
}
class Table
{
private $DB;
public function __construct(mysqli $DB) {
$this->DB = $DB;
}
public function openTable(string $name) {
$name = __san__($name, FALSE);
$DB = $this->DB;
$result = $DB->query("SHOW TABLES LIKE '$name'");
if ($result->num_rows == 0) {
$DB->query(
"CREATE TABLE `$name` (
name VARCHAR(255) NOT NULL,
value LONGTEXT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci,
type VARCHAR(255) DEFAULT 'string',
PRIMARY KEY (name)
)"
);
return new Item($name, $DB);
} else {
return new Item($name, $DB);
}
}
public function hasTable(string $name) {
$name = __san__($name, FALSE);
$DB = $this->DB;
$result = $DB->query("SHOW TABLES LIKE '$name'");
if ($result->num_rows == 0) {
return FALSE;
} else {
return TRUE;
}
}
public function keys() {
$DB = $this->DB;
$result = $DB->query("SHOW TABLES");
$arr=[];
if ($result->num_rows> 0) {
while($n = $result->fetch_assoc()){
array_push($arr,$n["Tables_in_my db"]);
}
$result->free();
}
return $arr;
}
public function removeTable(string $name) {
$name = __san__($name, FALSE);
$DB = $this->DB;
$result = $DB->query("DROP TABLE `$name`");
return $result;
}
public function removeAllTable() {
$result = $this->DB->query("SHOW TABLES");
if ($result) {
while ($row = $result->fetch_row()) {
$table = $row[0];
$this->DB->query("DROP TABLE `$table`");
}
$result->free();
}
}
}
class Item
{
private $DB;
private $name;
private $CHUNK_SIZE = 1024;
private $CHUNK_OFFSET = 0;
public function __construct(string $name, mysqli $DB) {
$this->name = $name;
$this->DB = $DB;
}
public function setItem(string $name, string $value) {
$name = __san__($name, FALSE);
$type = "string";
$value = __san__($value, TRUE);
$result = $this->DB->query("
SELECT name FROM `$this->name`
WHERE name = '$name'
");
if ($result->num_rows > 0) {
$this->DB->query("
UPDATE `$this->name`
SET value = '$value', type = '$type'
WHERE name = '$name'
");
} else {
$this->DB->query("
INSERT INTO `$this->name` (name, value) VALUES ('$name','$value')
");
}
return TRUE;
}
public function appendItem(string $name, string $value) {
$name = __san__($name, FALSE);
$type = "string";
$value = __san__($value, TRUE);
$result = $this->DB->query("
SELECT name FROM `$this->name`
WHERE name = '$name'
");
if ($result->num_rows > 0) {
$this->DB->query("
UPDATE `$this->name`
SET value = CONCAT(value, '$value')
WHERE name = '$name'
");
} else {
$this->DB->query("
INSERT INTO `$this->name` (name, value) VALUES ('$name','$value')
");
}
return TRUE;
}
public function getItem(string $name){
$name = __san__($name, FALSE);
$result = $this->DB->query("
SELECT value FROM `$this->name`
WHERE name = '$name'
");
if($result->num_rows > 0){
$val = $result->fetch_assoc()["value"];
$result->free();
return $val;
}
}
public function getChunkItem(string $name,object $callback){
$name = __san__($name, FALSE);
global $foo;
global $next;
global $offset;
global $size;
global $tb_name;
global $name;
$next = function(){
global $foo;
global $next;
global $offset;
global $size;
global $tb_name;
global $name;
$result = $this->DB->query("
SELECT SUBSTRING(value, $offset + 1, $size) AS value
FROM `$tb_name`
WHERE name = '$name'
");
$val = $result->fetch_assoc()["value"];
$result->free();
$offset += $size;
if (!$val) {
$val = NULL;
}
$foo($val, $next);
};
$foo = $callback;
$tb_name = $this->name;
$offset = $this->CHUNK_OFFSET;
$size = $this->CHUNK_SIZE;
$next();
}
public function hasItem(string $name){
$name = __san__($name, FALSE);
$result = $this->DB->query("
SELECT name FROM `$this->name`
WHERE name = '$name'
");
if($result->num_rows > 0){
return TRUE;
}
return FALSE;
}
public function keys(){
$result = $this->DB->query("
SELECT name FROM `$this->name`
");
$arr = [];
if($result->num_rows > 0){
$n;
while ($n = $result->fetch_assoc()) {
array_push($arr, $n["name"]);
}
$result->free();
}
return $arr;
}
public function removeItem(string $name){
$name = __san__($name, FALSE);
$result = $this->DB->query("
DELETE FROM `$this->name`
WHERE name = '$name'
");
return $result;
}
public function removeAllItem(){
$result = $this->DB->query("
DELETE FROM `$this->name`
");
return $result;
}
public function getAllItem(){
$result = $this->DB->query("
SELECT * FROM `$this->name`
");
$arr = [];
if($result->num_rows > 0){
$n;
while ($n = $result->fetch_assoc()) {
$arr[$n["name"]]=$n["value"];
}
$result->free();
}
return $arr;
}
}
function __san__(string $v, $is_val) {
if ($is_val === TRUE) {
$v = preg_replace("/(['])/i", "\\\\$0", $v);
} else {
$v = preg_replace("/\n\r|\n|\r\n/i", " ", $v);
$v = preg_replace("/([`'])/i", "\\\\$0", $v);
$v = trim($v);
}
return $v;
}
function __openDB__($name, $self, $DB) {
$DB = new mysqli($self->DB_HOST, $self->DB_USER, $self->DB_PASSWORD, $name);
$DB->set_charset("utf8mb4");
return new Table($DB);
}