mirror of https://github.com/friendica/friendica
103 lines
2.4 KiB
PHP
103 lines
2.4 KiB
PHP
<?php
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namespace Friendica\Database\Driver;
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abstract class AbstractDriver implements IDriver
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{
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/**
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* The connection state of the database
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* @var bool
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*/
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protected $isConnected;
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protected $dbUser;
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protected $dbPass;
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protected $dbName;
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protected $dbHost;
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protected $dbPort;
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protected $dbCharset;
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public function __construct($serverAddress, $user, $pass, $db, $charset = null)
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{
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$this->isConnected = false;
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$this->dbHost = $serverAddress;
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$this->dbUser = $user;
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$this->dbPass = $pass;
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$this->dbName = $db;
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$this->dbCharset = $charset;
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$serverAddress = trim($this->dbHost);
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$serverAddressData = explode(':', $serverAddress);
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$server = $serverAddressData[0];
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if (count($serverAddressData) > 1) {
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$this->dbPort = trim($serverAddressData[1]);
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} else {
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$this->dbPort = 0;
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}
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$this->dbHost = trim($server);
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$this->dbUser = trim($this->dbUser);
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$this->dbPass = trim($this->dbPass);
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$this->dbName = trim($this->dbName);
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$this->dbCharset = trim($this->dbCharset);
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}
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/**
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* {@inheritDoc}
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*/
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public function escape($sql)
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{
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// fallback, if no explicit escaping is set for a connection
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return str_replace("'", "\\'", $sql);
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}
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/**
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* {@inheritDoc}
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*/
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public function replaceParameters($sql, array $args = [])
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{
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$offset = 0;
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foreach ($args AS $param => $value) {
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if (is_int($args[$param]) || is_float($args[$param])) {
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$replace = intval($args[$param]);
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} else {
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$replace = "'" . $this->escape($args[$param]) . "'";
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}
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$pos = strpos($sql, '?', $offset);
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if ($pos !== false) {
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$sql = substr_replace($sql, $replace, $pos, 1);
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}
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$offset = $pos + strlen($replace);
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}
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return $sql;
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}
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/**
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* @brief Replaces ANY_VALUE() function by MIN() function,
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* if the database server does not support ANY_VALUE().
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*
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* Considerations for Standard SQL, or MySQL with ONLY_FULL_GROUP_BY (default since 5.7.5).
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* ANY_VALUE() is available from MySQL 5.7.5 https://dev.mysql.com/doc/refman/5.7/en/miscellaneous-functions.html
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* A standard fall-back is to use MIN().
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*
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* @param string $sql An SQL string without the values
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*
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* @return string The input SQL string modified if necessary.
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*/
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protected function anyValueFallback($sql)
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{
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$server_info = $this->getServerInfo();
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if (version_compare($server_info, '5.7.5', '<') ||
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(stripos($server_info, 'MariaDB') !== false)) {
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$sql = str_ireplace('ANY_VALUE(', 'MIN(', $sql);
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}
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return $sql;
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}
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}
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