a33615445e
- improved file structure for _Model_ classes (`app/main/model/..`). Group by database name - improved database connection handling (fixed persistent DB connections)
70 lines
1.9 KiB
PHP
70 lines
1.9 KiB
PHP
<?php
|
|
|
|
|
|
namespace lib\db;
|
|
|
|
|
|
use DB\SQL\Schema;
|
|
|
|
class SQL extends \DB\SQL {
|
|
|
|
/**
|
|
* SQL constructor.
|
|
* @param $dsn
|
|
* @param null $user
|
|
* @param null $pw
|
|
* @param array|null $options
|
|
*/
|
|
public function __construct($dsn, $user = null, $pw = null, array $options = null){
|
|
parent::__construct($dsn, $user, $pw, $options);
|
|
}
|
|
|
|
/**
|
|
* get all table names
|
|
* @return array|bool
|
|
*/
|
|
public function getTables(){
|
|
$schema = new Schema($this);
|
|
return $schema->getTables();
|
|
}
|
|
/**
|
|
* checks whether a table exists or not
|
|
* @param string $table
|
|
* @return bool
|
|
*/
|
|
public function tableExists(string $table) : bool {
|
|
return in_array($table, $this->getTables());
|
|
}
|
|
|
|
/**
|
|
* get current row (data) count for an existing table
|
|
* -> returns 0 if table not exists or empty
|
|
* @param string $table
|
|
* @return int
|
|
*/
|
|
public function getRowCount(string $table) : int {
|
|
$count = 0;
|
|
if($this->tableExists($table)){
|
|
$countRes = $this->exec("SELECT COUNT(*) `num` FROM " . $this->quotekey($table));
|
|
if(isset($countRes[0]['num'])){
|
|
$count = (int)$countRes[0]['num'];
|
|
}
|
|
}
|
|
return $count;
|
|
}
|
|
|
|
/**
|
|
* set some default config for this DB
|
|
* @param string $characterSetDatabase
|
|
* @param string $collationDatabase
|
|
*/
|
|
public function prepareDatabase(string $characterSetDatabase, string $collationDatabase){
|
|
if($this->name() && $characterSetDatabase && $collationDatabase){
|
|
// set/change default "character set" and "collation"
|
|
$this->exec('ALTER DATABASE ' . $this->quotekey($this->name())
|
|
. ' CHARACTER SET ' . $characterSetDatabase
|
|
. ' COLLATE ' . $collationDatabase
|
|
);
|
|
}
|
|
}
|
|
} |