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<?php
require_once 'config.php';
$dbConn = mysql_connect ($dbHost, $dbUser, $dbPass) or die ('MySQL connect
failed. ' . mysql_error());
mysql_select_db($dbName) or die('Cannot select database. ' . mysql_error());
function dbQuery($sql)
{
return mysql_query($sql) or die('Query failed. ' . mysql_error());
}
function dbAffectedRows()
{
global $dbConn;
return mysql_affected_rows($dbConn);
}
function dbFetchArray($result, $resultType = MYSQL_NUM)
{
return mysql_fetch_array($result, $resultType);
}
function dbFetchAssoc($result)
{
return mysql_fetch_assoc($result);
}
function dbFetchRow($result)
{
return mysql_fetch_row($result);
}
function dbFreeResult($result)
{
return mysql_free_result($result);
}
function dbNumRows($result)
{
return mysql_num_rows($result);
}
function dbSelect($dbName)
{
return mysql_select_db($dbName);
}
?>
How to use it ?
Below you can see an example on how to use this database abstration library.
The first one is using PHP database function directly :
<?php
require_once 'config.php';
$conn = mysql_connect($dbHost, $dbUser, $dbPass);
mysql_select_db($dbName);
$sql = "SELECT *
FROM tbl_product
ORDER BY pd_name";
$result = mysql_query($sql);
$products = array();
while ($row = mysql_fetch_assoc($result)) {
$products[] = $row;
}
?>
And the second one is using our database abstraction. We don't have to initiate
the connection this time because it is done from database.php :
<?php
require_once 'config.php';
require_once 'database.php';
$sql = "SELECT *
FROM tbl_product
ORDER BY pd_name";
$result = dbQuery($sql);
$products = array();
while ($row = dbFetchAssoc(&$result)) {
$products[] = $row;
}
?>
As you can see, using database abstraction isn't so hard at all.
Now that we have taken care the database issues we start building
the admin pages.
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