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admin/phpMyAdmin/libraries/classes/Dbal/DbiMysqli.php
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365
admin/phpMyAdmin/libraries/classes/Dbal/DbiMysqli.php
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<?php
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/**
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* Interface to the MySQL Improved extension (MySQLi)
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*/
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declare(strict_types=1);
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namespace PhpMyAdmin\Dbal;
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use mysqli;
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use mysqli_stmt;
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use PhpMyAdmin\DatabaseInterface;
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use PhpMyAdmin\Query\Utilities;
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use function __;
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use function defined;
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use function mysqli_connect_errno;
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use function mysqli_connect_error;
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use function mysqli_get_client_info;
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use function mysqli_init;
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use function mysqli_report;
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use function sprintf;
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use function stripos;
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use function trigger_error;
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use const E_USER_ERROR;
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use const E_USER_WARNING;
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use const MYSQLI_CLIENT_COMPRESS;
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use const MYSQLI_CLIENT_SSL;
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use const MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT;
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use const MYSQLI_OPT_LOCAL_INFILE;
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use const MYSQLI_OPT_SSL_VERIFY_SERVER_CERT;
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use const MYSQLI_REPORT_OFF;
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use const MYSQLI_STORE_RESULT;
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use const MYSQLI_USE_RESULT;
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/**
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* Interface to the MySQL Improved extension (MySQLi)
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*/
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class DbiMysqli implements DbiExtension
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{
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/**
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* connects to the database server
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*
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* @param string $user mysql user name
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* @param string $password mysql user password
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* @param array $server host/port/socket/persistent
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*
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* @return mysqli|bool false on error or a mysqli object on success
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*/
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public function connect($user, $password, array $server)
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{
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if ($server) {
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$server['host'] = empty($server['host'])
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? 'localhost'
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: $server['host'];
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}
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mysqli_report(MYSQLI_REPORT_OFF);
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$mysqli = mysqli_init();
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if ($mysqli === false) {
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return false;
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}
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$client_flags = 0;
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/* Optionally compress connection */
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if ($server['compress'] && defined('MYSQLI_CLIENT_COMPRESS')) {
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$client_flags |= MYSQLI_CLIENT_COMPRESS;
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}
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/* Optionally enable SSL */
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if ($server['ssl']) {
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$client_flags |= MYSQLI_CLIENT_SSL;
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if (
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! empty($server['ssl_key']) ||
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! empty($server['ssl_cert']) ||
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! empty($server['ssl_ca']) ||
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! empty($server['ssl_ca_path']) ||
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! empty($server['ssl_ciphers'])
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) {
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$mysqli->ssl_set(
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$server['ssl_key'] ?? '',
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$server['ssl_cert'] ?? '',
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$server['ssl_ca'] ?? '',
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$server['ssl_ca_path'] ?? '',
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$server['ssl_ciphers'] ?? ''
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);
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}
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/*
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* disables SSL certificate validation on mysqlnd for MySQL 5.6 or later
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* @link https://bugs.php.net/bug.php?id=68344
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* @link https://github.com/phpmyadmin/phpmyadmin/pull/11838
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*/
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if (! $server['ssl_verify']) {
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$mysqli->options(MYSQLI_OPT_SSL_VERIFY_SERVER_CERT, (int) $server['ssl_verify']);
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$client_flags |= MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT;
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}
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}
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if ($GLOBALS['cfg']['PersistentConnections']) {
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$host = 'p:' . $server['host'];
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} else {
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$host = $server['host'];
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}
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if ($server['hide_connection_errors']) {
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$return_value = @$mysqli->real_connect(
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$host,
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$user,
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$password,
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'',
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$server['port'],
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(string) $server['socket'],
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$client_flags
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);
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} else {
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$return_value = $mysqli->real_connect(
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$host,
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$user,
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$password,
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'',
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$server['port'],
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(string) $server['socket'],
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$client_flags
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);
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}
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if ($return_value === false) {
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/*
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* Switch to SSL if server asked us to do so, unfortunately
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* there are more ways MySQL server can tell this:
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*
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* - MySQL 8.0 and newer should return error 3159
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* - #2001 - SSL Connection is required. Please specify SSL options and retry.
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* - #9002 - SSL connection is required. Please specify SSL options and retry.
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*/
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// phpcs:disable Squiz.NamingConventions.ValidVariableName.MemberNotCamelCaps
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$error_number = $mysqli->connect_errno;
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$error_message = $mysqli->connect_error;
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// phpcs:enable
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if (
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! $server['ssl']
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&& ($error_number == 3159
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|| (($error_number == 2001 || $error_number == 9002)
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&& stripos($error_message, 'SSL Connection is required') !== false))
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) {
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trigger_error(
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__('SSL connection enforced by server, automatically enabling it.'),
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E_USER_WARNING
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);
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$server['ssl'] = true;
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return self::connect($user, $password, $server);
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}
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if ($error_number === 1045 && $server['hide_connection_errors']) {
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trigger_error(
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sprintf(
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__(
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'Error 1045: Access denied for user. Additional error information'
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. ' may be available, but is being hidden by the %s configuration directive.'
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),
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'[code][doc@cfg_Servers_hide_connection_errors]'
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. '$cfg[\'Servers\'][$i][\'hide_connection_errors\'][/doc][/code]'
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),
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E_USER_ERROR
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);
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}
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return false;
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}
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$mysqli->options(MYSQLI_OPT_LOCAL_INFILE, (int) defined('PMA_ENABLE_LDI'));
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return $mysqli;
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}
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/**
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* selects given database
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*
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* @param string|DatabaseName $databaseName database name to select
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* @param mysqli $link the mysqli object
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*/
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public function selectDb($databaseName, $link): bool
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{
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return $link->select_db((string) $databaseName);
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}
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/**
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* runs a query and returns the result
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*
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* @param string $query query to execute
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* @param mysqli $link mysqli object
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* @param int $options query options
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*
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* @return MysqliResult|false
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*/
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public function realQuery(string $query, $link, int $options)
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{
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$method = MYSQLI_STORE_RESULT;
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if ($options == ($options | DatabaseInterface::QUERY_UNBUFFERED)) {
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$method = MYSQLI_USE_RESULT;
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}
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$result = $link->query($query, $method);
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if ($result === false) {
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return false;
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}
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return new MysqliResult($result);
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}
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/**
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* Run the multi query and output the results
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*
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* @param mysqli $link mysqli object
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* @param string $query multi query statement to execute
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*/
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public function realMultiQuery($link, $query): bool
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{
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return $link->multi_query($query);
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}
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/**
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* Check if there are any more query results from a multi query
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*
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* @param mysqli $link the mysqli object
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*/
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public function moreResults($link): bool
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{
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return $link->more_results();
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}
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/**
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* Prepare next result from multi_query
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*
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* @param mysqli $link the mysqli object
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*/
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public function nextResult($link): bool
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{
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return $link->next_result();
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}
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/**
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* Store the result returned from multi query
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*
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* @param mysqli $link the mysqli object
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*
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* @return MysqliResult|false false when empty results / result set when not empty
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*/
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public function storeResult($link)
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{
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$result = $link->store_result();
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return $result === false ? false : new MysqliResult($result);
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}
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/**
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* Returns a string representing the type of connection used
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*
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* @param mysqli $link mysql link
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*
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* @return string type of connection used
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*/
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public function getHostInfo($link)
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{
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// phpcs:ignore Squiz.NamingConventions.ValidVariableName.MemberNotCamelCaps
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return $link->host_info;
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}
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/**
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* Returns the version of the MySQL protocol used
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*
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* @param mysqli $link mysql link
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*
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* @return string version of the MySQL protocol used
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*/
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public function getProtoInfo($link)
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{
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// phpcs:ignore Squiz.NamingConventions.ValidVariableName.MemberNotCamelCaps
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return $link->protocol_version;
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}
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/**
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* returns a string that represents the client library version
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*
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* @return string MySQL client library version
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*/
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public function getClientInfo()
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{
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return mysqli_get_client_info();
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}
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/**
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* Returns last error message or an empty string if no errors occurred.
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*
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* @param mysqli|false|null $link mysql link
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*/
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public function getError($link): string
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{
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$GLOBALS['errno'] = 0;
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if ($link !== null && $link !== false) {
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$error_number = $link->errno;
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$error_message = $link->error;
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} else {
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$error_number = mysqli_connect_errno();
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$error_message = (string) mysqli_connect_error();
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}
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if ($error_number === 0 || $error_message === '') {
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return '';
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}
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// keep the error number for further check after
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// the call to getError()
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$GLOBALS['errno'] = $error_number;
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return Utilities::formatError($error_number, $error_message);
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}
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/**
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* returns the number of rows affected by last query
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*
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* @param mysqli $link the mysqli object
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*
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* @return int|string
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* @psalm-return int|numeric-string
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*/
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public function affectedRows($link)
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{
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// phpcs:ignore Squiz.NamingConventions.ValidVariableName.MemberNotCamelCaps
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return $link->affected_rows;
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}
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/**
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* returns properly escaped string for use in MySQL queries
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*
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* @param mysqli $link database link
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* @param string $string string to be escaped
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*
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* @return string a MySQL escaped string
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*/
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public function escapeString($link, $string)
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{
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return $link->real_escape_string($string);
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}
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/**
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* Prepare an SQL statement for execution.
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*
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* @param mysqli $link database link
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* @param string $query The query, as a string.
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*
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* @return mysqli_stmt|false A statement object or false.
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*/
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public function prepare($link, string $query)
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{
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return $link->prepare($query);
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}
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}
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