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Consolidated DatabaseConnection class to be a PDO wrapper

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This commit is contained in:
Conner Harkness 2025-06-24 14:52:08 -06:00
parent 5f3dd988b6
commit 45a63e81db
1 changed files with 35 additions and 75 deletions
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110
lib/DatabaseConnection.php
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@ -1,55 +1,49 @@
<?php
class DatabaseConnection
{
private $strEngine;
private $strHost;
private $strDatabaseName;
private $strUsername;
private $strPassword;
private $strConnection;
private $pdo;
public function __construct(
$strEngine = null,
$strHost = null,
$strDatabaseName = null,
$strUsername = null,
$strPassword = null)
public function __construct($strConnection, $strUsername = null, $strPassword = null)
{
$this->strEngine = $strEngine;
$this->strConnection = $strConnection;
switch ($strEngine)
{
case "sqlsrv":
$this->pdo = new PDO(
"sqlsrv:Server={$strHost};Database={$strDatabaseName}",
$strUsername,
$strPassword);
break;
case "mysql":
$this->pdo = new PDO(
"mysql:host={$strHost};dbname={$strDatabaseName}",
$strUsername,
$strPassword);
break;
case "sqlite":
$strFileName = $strHost;
if ($strFileName == null || strlen($strFileName) < 1)
$strFileName = ":memory:";
$this->pdo = new PDO("sqlite:{$strFileName}");
break;
default:
throw new Exception("Unknown database engine {$strEngine}.");
}
// SQL Server: "sqlsrv:Server={$strHost};Database={$strDatabaseName}"
// MySQL: "mysql:host={$strHost};dbname={$strDatabaseName}"
// SQLite: "sqlite:{$strFileName}"
// SQLite: "sqlite::memory:"
$this->pdo = new PDO($strConnection, $strUsername, $strPassword);
$this->pdo->setAttribute(
PDO::ATTR_ERRMODE,
PDO::ERRMODE_EXCEPTION);
}
private static function flatten(...$args)
{
if (is_null($args))
return array();
if (count($args) > 0)
{
$varOutput = array();
$varFirst = array_shift($args);
if (is_array($varFirst))
foreach ($varFirst as $varItem)
$varOutput = array_merge($varOutput, self::flatten($varItem));
else
array_push($varOutput, $varFirst);
if (count($args) > 0)
$varOutput = array_merge($varOutput, self::flatten($args));
return $varOutput;
}
else
return array();
}
public function query($input)
{
$varArgs = self::flatten(func_get_args());
@ -62,7 +56,7 @@
file_get_contents("db/{$strQuery}") :
$strQuery;
if ($this->strEngine == "sqlsrv")
if (preg_match("/^sqlsrv/", $this->strConnection))
$strQuery = "set nocount on; {$strQuery}";
$varStatement = $this->pdo->prepare($strQuery);
@ -75,7 +69,7 @@
$varOutput = array();
// Engines that do not support multiple rowsets:
if (in_array($this->strEngine, array("sqlite")))
if (preg_match("/^(sqlite)/", $this->strConnection))
{
while ($varRow = $varStatement->fetch())
{
@ -112,39 +106,5 @@
return $varOutput;
}
//
//
//
//
//
//
//
// Used to combine a mixture of values and arrays of values as one flat array of values in the order they arrive in. For example: self::flatten("a", ["b", "c", ["d", "e", "f"], "g"], "h") should return an array of ["a", "b", "c", "d", "e", "f", "g", "h"].
private static function flatten(...$args)
{
if (is_null($args))
return array();
if (count($args) > 0)
{
$varOutput = array();
$varFirst = array_shift($args);
if (is_array($varFirst))
foreach ($varFirst as $varItem)
$varOutput = array_merge($varOutput, self::flatten($varItem));
else
array_push($varOutput, $varFirst);
if (count($args) > 0)
$varOutput = array_merge($varOutput, self::flatten($args));
return $varOutput;
}
else
return array();
}
}
?>