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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Interface to the classic MySQL extension
*
* @package PhpMyAdmin-DBI
* @subpackage MySQL
*/
namespace PhpMyAdmin\Dbi;
use PhpMyAdmin\Core;
use PhpMyAdmin\DatabaseInterface;
if (! defined('PHPMYADMIN')) {
exit;
}
if (! extension_loaded('mysql')) {
// The old MySQL extension is deprecated as of PHP 5.5.0, and will be
// removed in the future. Instead, the `MySQLi` or `PDO_MySQL` extension
// should be used.
return;
}
/**
* Interface to the classic MySQL extension
*
* @package PhpMyAdmin-DBI
* @subpackage MySQL
*/
class DbiMysql implements DbiExtension
{
/**
* Helper function for connecting to the database server
*
* @param string $server host/port/socket
* @param string $user mysql user name
* @param string $password mysql user password
* @param int $client_flags client flags of connection
* @param bool $persistent whether to use persistent connection
*
* @return mixed false on error or a mysql connection resource on success
*/
private function _realConnect($server, $user, $password, $client_flags,
$persistent = false
) {
global $cfg;
if (ini_get('mysql.allow_local_infile')) {
Core::fatalError(__('Please disable mysql.allow_local_infile in your PHP configuration or install the mysqli extension.'));
}
if (empty($client_flags)) {
if ($cfg['PersistentConnections'] || $persistent) {
$link = @mysql_pconnect($server, $user, $password);
} else {
$link = @mysql_connect($server, $user, $password);
}
} else {
if ($cfg['PersistentConnections'] || $persistent) {
$link = @mysql_pconnect($server, $user, $password, $client_flags);
} else {
$link = @mysql_connect(
$server, $user, $password, false, $client_flags
);
}
}
return $link;
}
/**
* Run the multi query and output the results
*
* @param mysqli $link mysqli object
* @param string $query multi query statement to execute
*
* @return boolean false always false since mysql extension not support
* for multi query executions
*/
public function realMultiQuery($link, $query)
{
// N.B.: PHP's 'mysql' extension does not support
// multi_queries so this function will always
// return false. Use the 'mysqli' extension, if
// you need support for multi_queries.
return false;
}
/**
* connects to the database server
*
* @param string $user mysql user name
* @param string $password mysql user password
* @param array $server host/port/socket/persistent
*
* @return mixed false on error or a mysqli object on success
*/
public function connect(
$user, $password, array $server
) {
if ($server['port'] === 0) {
$server_port = '';
} else {
$server_port = ':' . $server['port'];
}
if (is_null($server['socket'])) {
$server_socket = '';
} else {
$server_socket = ':' . $server['socket'];
}
$client_flags = 0;
if (defined('PMA_ENABLE_LDI')) {
// use CLIENT_LOCAL_FILES as defined in mysql_com.h
// for the case where the client library was not compiled
// with --enable-local-infile
$client_flags |= 128;
}
/* Optionally compress connection */
if (defined('MYSQL_CLIENT_COMPRESS') && $server['compress']) {
$client_flags |= MYSQL_CLIENT_COMPRESS;
}
/* Optionally enable SSL */
if (defined('MYSQL_CLIENT_SSL') && $server['ssl']) {
$client_flags |= MYSQL_CLIENT_SSL;
}
if (!isset($server['host'])) {
$link = $this->_realConnect($server_socket, $user, $password, null);
} else {
$link = $this->_realConnect(
$server['host'] . $server_port . $server_socket,
$user, $password, null
);
}
return $link;
}
/**
* selects given database
*
* @param string $dbname name of db to select
* @param resource|null $link mysql link resource
*
* @return bool
*/
public function selectDb($dbname, $link)
{
return mysql_select_db($dbname, $link);
}
/**
* runs a query and returns the result
*
* @param string $query query to run
* @param resource|null $link mysql link resource
* @param int $options query options
*
* @return mixed
*/
public function realQuery($query, $link, $options)
{
if ($options == ($options | DatabaseInterface::QUERY_STORE)) {
return mysql_query($query, $link);
} elseif ($options == ($options | DatabaseInterface::QUERY_UNBUFFERED)) {
return mysql_unbuffered_query($query, $link);
}
return mysql_query($query, $link);
}
/**
* returns array of rows with associative and numeric keys from $result
*
* @param resource $result result MySQL result
*
* @return array
*/
public function fetchArray($result)
{
return mysql_fetch_array($result, MYSQL_BOTH);
}
/**
* returns array of rows with associative keys from $result
*
* @param resource $result MySQL result
*
* @return array
*/
public function fetchAssoc($result)
{
return mysql_fetch_array($result, MYSQL_ASSOC);
}
/**
* returns array of rows with numeric keys from $result
*
* @param resource $result MySQL result
*
* @return array
*/
public function fetchRow($result)
{
return mysql_fetch_array($result, MYSQL_NUM);
}
/**
* Adjusts the result pointer to an arbitrary row in the result
*
* @param resource $result database result
* @param integer $offset offset to seek
*
* @return bool true on success, false on failure
*/
public function dataSeek($result, $offset)
{
return mysql_data_seek($result, $offset);
}
/**
* Frees memory associated with the result
*
* @param resource $result database result
*
* @return void
*/
public function freeResult($result)
{
if (is_resource($result) && get_resource_type($result) === 'mysql result') {
mysql_free_result($result);
}
}
/**
* Check if there are any more query results from a multi query
*
* @param resource $link the connection object
*
* @return bool false
*/
public function moreResults($link)
{
// N.B.: PHP's 'mysql' extension does not support
// multi_queries so this function will always
// return false. Use the 'mysqli' extension, if
// you need support for multi_queries.
return false;
}
/**
* Prepare next result from multi_query
*
* @param resource $link the connection object
*
* @return boolean false
*/
public function nextResult($link)
{
// N.B.: PHP's 'mysql' extension does not support
// multi_queries so this function will always
// return false. Use the 'mysqli' extension, if
// you need support for multi_queries.
return false;
}
/**
* Returns a string representing the type of connection used
*
* @param resource|null $link mysql link
*
* @return string type of connection used
*/
public function getHostInfo($link)
{
return mysql_get_host_info($link);
}
/**
* Returns the version of the MySQL protocol used
*
* @param resource|null $link mysql link
*
* @return int version of the MySQL protocol used
*/
public function getProtoInfo($link)
{
return mysql_get_proto_info($link);
}
/**
* returns a string that represents the client library version
*
* @return string MySQL client library version
*/
public function getClientInfo()
{
return mysql_get_client_info();
}
/**
* returns last error message or false if no errors occurred
*
* @param resource|null $link mysql link
*
* @return string|bool $error or false
*/
public function getError($link)
{
$GLOBALS['errno'] = 0;
if (null !== $link && false !== $link) {
$error_number = mysql_errno($link);
$error_message = mysql_error($link);
} else {
$error_number = mysql_errno();
$error_message = mysql_error();
}
if (0 == $error_number) {
return false;
}
// keep the error number for further check after
// the call to getError()
$GLOBALS['errno'] = $error_number;
return $GLOBALS['dbi']->formatError($error_number, $error_message);
}
/**
* returns the number of rows returned by last query
*
* @param resource $result MySQL result
*
* @return string|int
*/
public function numRows($result)
{
if (is_bool($result)) {
return 0;
}
return mysql_num_rows($result);
}
/**
* returns the number of rows affected by last query
*
* @param resource|null $link the mysql object
*
* @return int
*/
public function affectedRows($link)
{
return mysql_affected_rows($link);
}
/**
* returns metainfo for fields in $result
*
* @param resource $result MySQL result
*
* @return array meta info for fields in $result
*
* @todo add missing keys like in mysqli_query (decimals)
*/
public function getFieldsMeta($result)
{
$fields = array();
$num_fields = mysql_num_fields($result);
for ($i = 0; $i < $num_fields; $i++) {
$field = mysql_fetch_field($result, $i);
$field->flags = mysql_field_flags($result, $i);
$field->orgtable = mysql_field_table($result, $i);
$field->orgname = mysql_field_name($result, $i);
$fields[] = $field;
}
return $fields;
}
/**
* return number of fields in given $result
*
* @param resource $result MySQL result
*
* @return int field count
*/
public function numFields($result)
{
return mysql_num_fields($result);
}
/**
* returns the length of the given field $i in $result
*
* @param resource $result MySQL result
* @param int $i field
*
* @return int length of field
*/
public function fieldLen($result, $i)
{
return mysql_field_len($result, $i);
}
/**
* returns name of $i. field in $result
*
* @param resource $result MySQL result
* @param int $i field
*
* @return string name of $i. field in $result
*/
public function fieldName($result, $i)
{
return mysql_field_name($result, $i);
}
/**
* returns concatenated string of human readable field flags
*
* @param resource $result MySQL result
* @param int $i field
*
* @return string field flags
*/
public function fieldFlags($result, $i)
{
return mysql_field_flags($result, $i);
}
/**
* Store the result returned from multi query
*
* @param resource $result MySQL result
*
* @return false
*/
public function storeResult($result)
{
return false;
}
/**
* returns properly escaped string for use in MySQL queries
*
* @param mixed $link database link
* @param string $str string to be escaped
*
* @return string a MySQL escaped string
*/
public function escapeString($link, $str)
{
return mysql_real_escape_string($str, $link);
}
}
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