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<?php
/**
* Database core functions for the PDO::MySQL library
*
* Note: PHP version 5 states that the MySQL library is "Maintenance only, Long term deprecation announced."
* It recommends using the PDO::MySQL or the MySQLi library instead.
*
* @package core
*/
// force UTF-8 Ø
define('DATABASE_SOFTWARE', 'PDO::MySQL');
Define('DATABASE_MIN_VERSION', '5.0.0');
Define('DATABASE_DESIRED_VERSION', '5.5.0');
/**
* Connect to the database server and select the database.
* @param array $config the db configuration parameters
* @param bool $errorstop set to false to omit error messages
* @return true if successful connection
*/
function db_connect($config, $errorstop = true) {
global $_zp_DB_connection, $_zp_DB_details, $_zp_DB_last_result;
$_zp_DB_details = unserialize(DB_NOT_CONNECTED);
$_zp_DB_connection = $_zp_DB_last_result = NULL;
if (array_key_exists('UTF-8', $config) && $config['UTF-8']) {
$utf8 = ';charset=utf8';
} else {
$utf8 = false;
}
try {
$db = $config['mysql_database'];
$hostname = $config['mysql_host'];
$username = $config['mysql_user'];
$password = $config['mysql_pass'];
if (class_exists('PDO')) {
$_zp_DB_connection = new PDO("mysql:host=$hostname;dbname=$db$utf8", $username, $password);
}
} catch (PDOException $e) {
$_zp_DB_last_result = $e;
if ($errorstop) {
zp_error(sprintf(gettext('MySql Error: Zenphoto received the error %s when connecting to the database server.'), $e->getMessage()));
}
$_zp_DB_connection = NULL;
return false;
}
$_zp_DB_details = $config;
if ($utf8 && version_compare(PHP_VERSION, '5.3.6', '<')) {
try {
$_zp_DB_connection->query("SET NAMES 'utf8'");
} catch (PDOException $e) {
// :(
}
}
// set the sql_mode to relaxed (if possible)
try {
$_zp_DB_connection->query('SET SESSION sql_mode="";');
} catch (PDOException $e) {
// What can we do :(
}
return $_zp_DB_connection;
}
/*
* report the software of the database
*/
function db_software() {
global $_zp_DB_connection;
$dbversion = trim($_zp_DB_connection->getAttribute(PDO::ATTR_SERVER_VERSION));
preg_match('/[0-9,\.]*/', $dbversion, $matches);
return array('application' => DATABASE_SOFTWARE, 'required' => DATABASE_MIN_VERSION, 'desired' => DATABASE_DESIRED_VERSION, 'version' => $matches[0]);
}
/**
* create the database
*/
function db_create() {
global $_zp_DB_details;
$sql = 'CREATE DATABASE IF NOT EXISTS ' . '`' . $_zp_DB_details['mysql_database'] . '`' . db_collation();
return query($sql, false);
}
/**
* Returns user's permissions on the database
*/
function db_permissions() {
global $_zp_DB_details;
$sql = "SHOW GRANTS FOR " . $_zp_DB_details['mysql_user'] . ";";
$result = query($sql, false);
if (!$result) {
$result = query("SHOW GRANTS;", false);
}
if ($result) {
$db_results = array();
while ($onerow = db_fetch_row($result)) {
$db_results[] = $onerow[0];
}
return $db_results;
} else {
return false;
}
}
/**
* Sets the SQL session mode to empty
*/
function db_setSQLmode() {
return query('SET SESSION sql_mode=""', false);
}
/**
* Queries the SQL session mode
*/
function db_getSQLmode() {
$result = query('SELECT @@SESSION.sql_mode;', false);
if ($result) {
$row = db_fetch_row($result);
return $row[0];
}
return false;
}
function db_collation() {
return ' CHARACTER SET utf8 COLLATE utf8_unicode_ci';
}
function db_create_table(&$sql) {
return query($sql, false);
}
function db_table_update(&$sql) {
return query($sql, false);
}
function db_show($what, $aux = '') {
global $_zp_DB_details;
switch ($what) {
case 'tables':
$sql = "SHOW TABLES FROM `" . $_zp_DB_details['mysql_database'] . "` LIKE '" . db_LIKE_escape($_zp_DB_details['mysql_prefix']) . "%'";
return query($sql, false);
case 'columns':
$sql = 'SHOW FULL COLUMNS FROM `' . $_zp_DB_details['mysql_prefix'] . $aux . '`';
return query($sql, false);
case 'variables':
$sql = "SHOW VARIABLES LIKE '$aux'";
return query_full_array($sql);
case 'index':
$sql = "SHOW INDEX FROM `" . $_zp_DB_details['mysql_database'] . '`.' . $aux;
return query_full_array($sql);
}
}
function db_list_fields($table) {
$result = db_show('columns', $table);
if ($result) {
$fields = array();
while ($row = db_fetch_assoc($result)) {
$fields[] = $row;
}
return $fields;
} else {
return false;
}
}
function db_truncate_table($table) {
global $_zp_DB_details;
$sql = 'TRUNCATE ' . $_zp_DB_details['mysql_prefix'] . $table;
return query($sql, false);
}
function db_LIKE_escape($str) {
return strtr($str, array('_' => '\\_', '%' => '\\%'));
}
require_once('functions-db_PDO.php');
?>
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