155 lines
3.7 KiB
PHP
155 lines
3.7 KiB
PHP
<?php
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/**
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* Make mysql_connect work like mysqli_connect for future php versions.
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*
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* @author Ivor Barhansky
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* @version 0.2
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*/
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// Make sure the MySQL extension is not loaded and there is no other drop in replacement active
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if (!extension_loaded('mysql') && !function_exists('mysql_connect')) {
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// Validate if the MySQLi extension is present
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if (!extension_loaded('mysqli')) {
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trigger_error('The extension "MySQLi" is not available', E_USER_ERROR);
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}
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// The function name "getLinkIdentifier" will be used to return a valid link_indentifier, make it is available
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if (function_exists('getLinkIdentifier')) {
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trigger_error('The function name "getLinkIdentifier" is already defined, please change the function name', E_USER_ERROR);
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}
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// Define MySQL constants
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define('MYSQL_CLIENT_COMPRESS', MYSQLI_CLIENT_COMPRESS);
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define('MYSQL_CLIENT_IGNORE_SPACE', MYSQLI_CLIENT_IGNORE_SPACE);
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define('MYSQL_CLIENT_INTERACTIVE', MYSQLI_CLIENT_INTERACTIVE);
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define('MYSQL_CLIENT_SSL', MYSQLI_CLIENT_SSL);
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define('MYSQL_ASSOC', MYSQLI_ASSOC);
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define('MYSQL_NUM', MYSQLI_NUM);
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define('MYSQL_BOTH', MYSQLI_BOTH);
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// Will contain the link identifier
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$link = null;
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/**
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* Get the link identifier
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*
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* @param mysqli $mysqli
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* @return mysqli|null
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*/
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function getLinkIdentifier(mysqli $mysqli = null)
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{
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if (!$mysqli) {
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global $link;
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$mysqli = $link;
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}
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return $mysqli;
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}
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/**
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* Open a connection to a MySQL Server
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*
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* @param $server
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* @param $username
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* @param $password
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* @return mysqli|null
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* @deprecated
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*/
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function mysql_connect($server, $username, $password, $new_link = false, $client_flags = 0)
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{
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global $link;
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$link = mysqli_connect($server, $username, $password);
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return $link;
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}
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/**
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* @param $databaseName
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* @return bool
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* @deprecated
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*/
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function mysql_select_db($databaseName)
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{
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global $link;
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return mysqli_select_db($link, $databaseName);
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}
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/**
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* @param $query
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* @param mysqli $mysqli
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* @return bool|mysqli_result
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* @deprecated
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*/
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function mysql_query($query, mysqli $mysqli = null)
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{
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return getLinkIdentifier($mysqli)->query($query);
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}
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/**
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* @param $string
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* @param mysqli $mysqli
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* @return string
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* @deprecated
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*/
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function mysql_real_escape_string($string, mysqli $mysqli = null)
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{
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return getLinkIdentifier($mysqli)->escape_string($string);
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}
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/**
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* @param mysqli_result $result
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* @return bool|array
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* @deprecated
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*/
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function mysql_fetch_assoc(mysqli_result $result)
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{
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$result = $result->fetch_assoc();
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if ($result === null) {
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$result = false;
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}
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return $result;
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}
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/**
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* @param mysqli_result $result
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* @return bool|int
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* @deprecated
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*/
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function mysql_num_rows(mysqli_result $result)
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{
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$result = $result->num_rows;
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if ($result === null) {
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$result = false;
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}
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return $result;
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}
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/**
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* @param mysqli_result $result
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* @param $result_type
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* @return void
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* @deprecated
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*/
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function mysql_fetch_array(mysqli_result $result, $result_type = MYSQL_BOTH)
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{
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return mysqli_fetch_array($result, $result_type);
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}
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/**
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* Get the ID generated in the last query
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*
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* @param null $mysqli
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* @return int|string
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* @deprecated
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*/
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function mysql_insert_id(mysqli $mysqli = null)
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{
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return mysqli_insert_id(getLinkIdentifier($mysqli));
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}
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}
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