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php-e107/e107_handlers/mysql_class.php
2008-05-17 17:18:36 +00:00

897 lines
24 KiB
PHP

<?php
/*
+---------------------------------------------------------------+
| e107 website system
|
| ©Steve Dunstan 2001-2002
| http://e107.org
| jalist@e107.org
|
| Released under the terms and conditions of the
| GNU General Public License (http://gnu.org).
|
| $Source: /cvs_backup/e107_0.8/e107_handlers/mysql_class.php,v $
| $Revision: 1.24 $
| $Date: 2008-05-17 17:18:36 $
| $Author: e107steved $
|
+----------------------------------------------------------------------------+
*/
if (!defined('e107_INIT')) { exit; }
$db_time = 0.0; // Global total time spent in all db object queries
$db_mySQLQueryCount = 0; // Global total number of db object queries (all db's)
$db_ConnectionID = NULL; // Stores ID for the first DB connection used - which should be the main E107 DB - then used as default
/**
* MySQL Abstraction class
*
* @package e107
* @version $Revision: 1.24 $
* @author $Author: e107steved $
*/
class db {
var $mySQLserver;
var $mySQLuser;
var $mySQLpassword;
var $mySQLdefaultdb;
var $mySQLPrefix;
var $mySQLaccess;
var $mySQLresult;
var $mySQLrows;
var $mySQLerror;
var $mySQLcurTable;
var $mySQLlanguage;
var $mySQLinfo;
var $tabset;
var $total_results; // Total number of results
/**
* @return db
* @desc db constructor gets language options from the cookie or session
* @access public
*/
function db()
{
global $pref, $eTraffic, $db_defaultPrefix;
$eTraffic->BumpWho('Create db object', 1);
$this->mySQLPrefix = MPREFIX; // Set the default prefix - may be overridden
$langid = 'e107language_'.$pref['cookie_name'];
if ($pref['user_tracking'] == 'session')
{
if (!isset($_SESSION[$langid])) { return; }
$this->mySQLlanguage = $_SESSION[$langid];
}
else
{
if (!isset($_COOKIE[$langid])) { return; }
$this->mySQLlanguage = $_COOKIE[$langid];
}
}
/**
* @return null or string error code
* @param string $mySQLserver IP Or hostname of the MySQL server
* @param string $mySQLuser MySQL username
* @param string $mySQLpassword MySQL Password
* @param string $mySQLdefaultdb The database schema to connect to
* @desc Connects to mySQL server and selects database - generally not required if your table is in the main DB.<br />
* <br />
* Example using e107 database with variables defined in config.php:<br />
* <code>$sql = new db;
* $sql->db_Connect($mySQLserver, $mySQLuser, $mySQLpassword, $mySQLdefaultdb);</code>
* <br />
* OR to connect an other database:<br />
* <code>$sql = new db;
* $sql->db_Connect('url_server_database', 'user_database', 'password_database', 'name_of_database');</code>
*
* @access public
*/
function db_Connect($mySQLserver, $mySQLuser, $mySQLpassword, $mySQLdefaultdb, $newLink = FALSE, $mySQLPrefix = MPREFIX)
{
global $eTraffic, $db_ConnectionID, $db_defaultPrefix;
$eTraffic->BumpWho('db Connect', 1);
$this->mySQLserver = $mySQLserver;
$this->mySQLuser = $mySQLuser;
$this->mySQLpassword = $mySQLpassword;
$this->mySQLdefaultdb = $mySQLdefaultdb;
$this->mySQLPrefix = $mySQLPrefix;
$temp = $this->mySQLerror;
$this->mySQLerror = FALSE;
if(defined("USE_PERSISTANT_DB") && USE_PERSISTANT_DB == true)
{
if (!$this->mySQLaccess = @mysql_pconnect($this->mySQLserver, $this->mySQLuser, $this->mySQLpassword)) // No persistent link parameter permitted
{
return 'e1';
}
}
else
{
if (!$this->mySQLaccess = @mysql_connect($this->mySQLserver, $this->mySQLuser, $this->mySQLpassword, $newLink))
{
return 'e1';
}
}
if (!@mysql_select_db($this->mySQLdefaultdb,$this->mySQLaccess))
{
return 'e2';
}
$this->dbError('dbConnect/SelectDB');
if ($db_ConnectionID == NULL) $db_ConnectionID = $this->mySQLaccess; // Save the connection resource
return TRUE;
}
/**
* @return void
* @param unknown $sMarker
* @desc Enter description here...
* @access private
*/
function db_Mark_Time($sMarker)
{
if (E107_DEBUG_LEVEL > 0)
{
global $db_debug;
$db_debug->Mark_Time($sMarker);
}
}
/**
* @return void
* @desc Enter description here...
* @access private
*/
function db_Show_Performance() {
return $db_debug->Show_Performance();
}
/**
* @return void
* @desc add query to dblog table
* @access private
*/
function db_Write_log($log_type = '', $log_remark = '', $log_query = '') {
global $tp, $e107;
list($time_usec, $time_sec) = explode(" ", microtime());
$uid = (USER) ? USERID : '0';
$userstring = ( USER === true ? USERNAME : "LAN_ANONYMOUS");
$ip = $e107->getip();
$qry = $tp->toDB($log_query);
$this->db_Insert('dblog', "0, {$time_sec}, {$time_usec}, '{$log_type}', 'DBDEBUG', {$uid}, '{$userstring}', '{$ip}', '', '{$log_remark}', '{$qry}'");
}
/**
* @return unknown
* @param unknown $query
* @param unknown $rli
* @desc Enter description here...
* @access private
* This is the 'core' routine which handles much of the interface between other functions and the DB
*/
function db_Query($query, $rli = NULL, $qry_from = '', $debug = FALSE, $log_type = '', $log_remark = '') {
global $db_time,$db_mySQLQueryCount,$queryinfo, $eTraffic;
$db_mySQLQueryCount++;
if ($debug == 'now') {
echo "** $query";
}
if ($debug !== FALSE || strstr(e_QUERY, 'showsql'))
{
$queryinfo[] = "<b>{$qry_from}</b>: $query";
}
if ($log_type != '') {
$this->db_Write_log($log_type, $log_remark, $query);
}
if(!$this->mySQLaccess)
{
global $db_ConnectionID;
$this->mySQLaccess = $db_ConnectionID;
}
$b = microtime();
$sQryRes = is_null($rli) ? @mysql_query($query,$this->mySQLaccess) : @mysql_query($query, $rli);
$e = microtime();
$eTraffic->Bump('db_Query', $b, $e);
$mytime = $eTraffic->TimeDelta($b,$e);
$db_time += $mytime;
$this->mySQLresult = $sQryRes;
if ((strpos($query,'SQL_CALC_FOUND_ROWS') !== FALSE) && (strpos($query,'SELECT') !== FALSE))
{ // Need to get the total record count as well. Return code is a resource identifier
// Have to do this before any debug action, otherwise this bit gets messed up
$fr = mysql_query("SELECT FOUND_ROWS()", $this->mySQLaccess);
$rc = mysql_fetch_array($fr);
$this->total_results = $rc['FOUND_ROWS()'];
}
if (E107_DEBUG_LEVEL) {
global $db_debug;
$aTrace = debug_backtrace();
$pTable = $this->mySQLcurTable;
if (!strlen($pTable)) {
$pTable = '(complex query)';
} else {
$this->mySQLcurTable = ''; // clear before next query
}
if(is_object($db_debug)) {
$buglink = is_null($rli) ? $this->mySQLaccess : $rli;
$nFields = $db_debug->Mark_Query($query, $buglink, $sQryRes, $aTrace, $mytime, $pTable);
} else {
echo "what happened to db_debug??!!<br />";
}
}
return $sQryRes;
}
/**
* @return int Number of rows or false on error
*
* @param string $table Table name to select data from
* @param string $fields Table fields to be retrieved, default * (all in table)
* @param string $arg Query arguments, default null
* @param string $mode Argument has WHERE or not, default=default (WHERE)
*
* @param bool $debug Debug mode on or off
*
* @desc Perform a mysql_query() using the arguments suplied by calling db::db_Query()<br />
* <br />
* If you need more requests think to call the class.<br />
* <br />
* Example using a unique connection to database:<br />
* <code>$sql->db_Select("comments", "*", "comment_item_id = '$id' AND comment_type = '1' ORDER BY comment_datestamp");</code><br />
* <br />
* OR as second connection:<br />
* <code>$sql2 = new db;
* $sql2->db_Select("chatbox", "*", "ORDER BY cb_datestamp DESC LIMIT $from, ".$view, 'no_where');</code>
*
* @access public
*/
function db_Select($table, $fields = '*', $arg = '', $mode = 'default', $debug = FALSE, $log_type = '', $log_remark = '')
{
global $db_mySQLQueryCount;
$table = $this->db_IsLang($table);
$this->mySQLcurTable = $table;
if ($arg != '' && $mode == 'default')
{
if ($this->mySQLresult = $this->db_Query('SELECT '.$fields.' FROM '.$this->mySQLPrefix.$table.' WHERE '.$arg, NULL, 'db_Select', $debug, $log_type, $log_remark)) {
$this->dbError('dbQuery');
return $this->db_Rows();
} else {
$this->dbError("db_Select (SELECT $fields FROM ".$this->mySQLPrefix."{$table} WHERE {$arg})");
return FALSE;
}
} elseif ($arg != '' && $mode != 'default') {
if ($this->mySQLresult = $this->db_Query('SELECT '.$fields.' FROM '.$this->mySQLPrefix.$table.' '.$arg, NULL, 'db_Select', $debug, $log_type, $log_remark)) {
$this->dbError('dbQuery');
return $this->db_Rows();
} else {
$this->dbError("db_Select (SELECT {$fields} FROM ".$this->mySQLPrefix."{$table} {$arg})");
return FALSE;
}
} else {
if ($this->mySQLresult = $this->db_Query('SELECT '.$fields.' FROM '.$this->mySQLPrefix.$table, NULL, 'db_Select', $debug, $log_type, $log_remark)) {
$this->dbError('dbQuery');
return $this->db_Rows();
} else {
$this->dbError("db_Select (SELECT {$fields} FROM ".$this->mySQLPrefix."{$table})");
return FALSE;
}
}
}
/**
* @return int Last insert ID or false on error
* @param string $table
* @param string $arg
* @param string $debug
* @desc Insert a row into the table<br />
* <br />
* Example:<br />
* <code>$sql->db_Insert("links", "0, 'News', 'news.php', '', '', 1, 0, 0, 0");</code>
*
* @access public
*/
function db_Insert($table, $arg, $debug = FALSE, $log_type = '', $log_remark = '') {
$table = $this->db_IsLang($table);
$this->mySQLcurTable = $table;
if(is_array($arg))
{
$keyList= "`".implode("`,`", array_keys($arg))."`";
$valList= "'".implode("','", $arg)."'";
$query = "INSERT INTO `".$this->mySQLPrefix."{$table}` ({$keyList}) VALUES ({$valList})";
}
else
{
$query = 'INSERT INTO '.$this->mySQLPrefix."{$table} VALUES ({$arg})";
}
if(!$this->mySQLaccess)
{
global $db_ConnectionID;
$this->mySQLaccess = $db_ConnectionID;
}
if ($result = $this->mySQLresult = $this->db_Query($query, NULL, 'db_Insert', $debug, $log_type, $log_remark )) {
$tmp = mysql_insert_id($this->mySQLaccess);
return ($tmp) ? $tmp : TRUE; // return true even if table doesn't have auto-increment.
} else {
$this->dbError("db_Insert ($query)");
return FALSE;
}
}
/**
* @return int number of affected rows, or false on error
* @param string $table
* @param string $arg
* @param bool $debug
* @desc Update fields in ONE table of the database corresponding to your $arg variable<br />
* <br />
* Think to call it if you need to do an update while retrieving data.<br />
* <br />
* Example using a unique connection to database:<br />
* <code>$sql->db_Update("user", "user_viewed='$u_new' WHERE user_id='".USERID."' ");</code>
* <br />
* OR as second connection<br />
* <code>$sql2 = new db;
* $sql2->db_Update("user", "user_viewed = '$u_new' WHERE user_id = '".USERID."' ");</code><br />
*
* @access public
*/
function db_Update($table, $arg, $debug = FALSE, $log_type = '', $log_remark = '') {
$table = $this->db_IsLang($table);
$this->mySQLcurTable = $table;
if(!$this->mySQLaccess)
{
global $db_ConnectionID;
$this->mySQLaccess = $db_ConnectionID;
}
if ($result = $this->mySQLresult = $this->db_Query('UPDATE '.$this->mySQLPrefix.$table.' SET '.$arg, NULL, 'db_Update', $debug, $log_type, $log_remark)) {
$result = mysql_affected_rows($this->mySQLaccess);
if ($result == -1) return FALSE; // Error return from mysql_affected_rows
return $result;
} else {
$this->dbError("db_Update ($query)");
return FALSE;
}
}
/* Similar to db_Update(), but splits the variables and the 'WHERE' clause.
$vars may be an array (fieldname=>newvalue) of fields to be updated, or a simple list.
$arg is usually a 'WHERE' clause
The way the code is written at the moment, a call to db_Update() with just the first two parameters specified can be
converted simply by changing the function name - it will still work.
*/
function db_UpdateArray($table, $vars, $arg='', $debug = FALSE, $log_type = '', $log_remark = '')
{
$table = $this->db_IsLang($table);
$this->mySQLcurTable = $table;
if(!$this->mySQLaccess)
{
global $db_ConnectionID;
$this->mySQLaccess = $db_ConnectionID;
}
$new_data = '';
if (is_array($vars))
{
$spacer = '';
foreach ($vars as $fn => $fv)
{
$new_data .= $spacer."`{$fn}`='{$fv}'";
$spacer = ', ';
}
$vars = '';
}
if ($result = $this->mySQLresult = $this->db_Query('UPDATE '.$this->mySQLPrefix.$table.' SET '.$new_data.$vars.' '.$arg, NULL, 'db_UpdateArray', $debug, $log_type, $log_remark))
{
$result = mysql_affected_rows($this->mySQLaccess);
if ($result == -1) return FALSE; // Error return from mysql_affected_rows
return $result;
}
else
{
$this->dbError("db_Update ($query)");
return FALSE;
}
}
/**
* @return array MySQL row
* @param string $mode
* @desc Fetch an array containing row data (see PHP's mysql_fetch_array() docs)<br />
* <br />
* Example :<br />
* <code>while($row = $sql->db_Fetch()){
* $text .= $row['username'];
* }</code>
*
* @access public
*/
function db_Fetch($type = MYSQL_BOTH) {
global $eTraffic;
if (!(is_int($type))) {
$type=MYSQL_BOTH;
}
$b = microtime();
$row = @mysql_fetch_array($this->mySQLresult,$type);
$eTraffic->Bump('db_Fetch', $b);
if ($row) {
$this->dbError('db_Fetch');
return $row;
} else {
$this->dbError('db_Fetch');
return FALSE;
}
}
/**
* @return int number of affected rows or false on error
* @param string $table
* @param string $fields
* @param string $arg
* @desc Count the number of rows in a select<br />
* <br />
* Example:<br />
* <code>$topics = $sql->db_Count("forum_t", "(*)", " WHERE thread_forum_id='".$forum_id."' AND thread_parent='0' ");</code>
*
* @access public
*/
function db_Count($table, $fields = '(*)', $arg = '', $debug = FALSE, $log_type = '', $log_remark = '') {
$table = $this->db_IsLang($table);
if ($fields == 'generic') {
$query=$table;
if ($this->mySQLresult = $this->db_Query($query, NULL, 'db_Count', $debug, $log_type, $log_remark)) {
$rows = $this->mySQLrows = @mysql_fetch_array($this->mySQLresult);
return $rows['COUNT(*)'];
} else {
$this->dbError("dbCount ($query)");
return FALSE;
}
}
$this->mySQLcurTable = $table;
$query='SELECT COUNT'.$fields.' FROM '.$this->mySQLPrefix.$table.' '.$arg;
if ($this->mySQLresult = $this->db_Query($query, NULL, 'db_Count', $debug, $log_type, $log_remark)) {
$rows = $this->mySQLrows = @mysql_fetch_array($this->mySQLresult);
return $rows[0];
} else {
$this->dbError("dbCount ($query)");
return FALSE;
}
}
/**
* @return void
* @desc Closes the mySQL server connection.<br />
* <br />
* Only required if you open a second connection.<br />
* Native e107 connection is closed in the footer.php file<br />
* <br />
* Example :<br />
* <code>$sql->db_Close();</code>
*
* @access public
*/
function db_Close() {
global $eTraffic;
if(!$this->mySQLaccess)
{
global $db_ConnectionID;
$this->mySQLaccess = $db_ConnectionID;
}
$eTraffic->BumpWho('db Close', 1);
$this->mySQLaccess = NULL; // correct way to do it when using shared links.
$this->dbError('dbClose');
}
/**
* @return int number of affected rows, or false on error
* @param string $table
* @param string $arg
* @desc Delete rows from a table<br />
* <br />
* Example:
* <code>$sql->db_Delete("tmp", "tmp_ip='$ip'");</code><br />
* <br />
* @access public
*/
function db_Delete($table, $arg = '', $debug = FALSE, $log_type = '', $log_remark = '') {
$table = $this->db_IsLang($table);
$this->mySQLcurTable = $table;
if(!$this->mySQLaccess)
{
global $db_ConnectionID;
$this->mySQLaccess = $db_ConnectionID;
}
if (!$arg) {
if ($result = $this->mySQLresult = $this->db_Query('DELETE FROM '.$this->mySQLPrefix.$table, NULL, 'db_Delete', $debug, $log_type, $log_remark)) {
return $result;
} else {
$this->dbError("db_Delete ($arg)");
return FALSE;
}
} else {
if ($result = $this->mySQLresult = $this->db_Query('DELETE FROM '.$this->mySQLPrefix.$table.' WHERE '.$arg, NULL, 'db_Delete', $debug, $log_type, $log_remark)) {
$tmp = mysql_affected_rows($this->mySQLaccess);
return $tmp;
} else {
$this->dbError('db_Delete ('.$arg.')');
return FALSE;
}
}
}
/**
* @return unknown
* @desc Enter description here...
* @access private
*/
function db_Rows() {
$rows = $this->mySQLrows = @mysql_num_rows($this->mySQLresult);
$this->dbError('db_Rows');
return $rows;
}
/**
* @return unknown
* @param unknown $from
* @desc Enter description here...
* @access private
*/
function dbError($from) {
if ($error_message = @mysql_error()) {
if ($this->mySQLerror == TRUE) {
message_handler('ADMIN_MESSAGE', '<b>mySQL Error!</b> Function: '.$from.'. ['.@mysql_errno().' - '.$error_message.']', __LINE__, __FILE__);
return $error_message;
}
}
}
/**
* @return void
* @param unknown $mode
* @desc Enter description here...
* @access private
*/
function db_SetErrorReporting($mode) {
$this->mySQLerror = $mode;
}
/**
* @return unknown
* @param unknown $arg
* @desc Enter description here...
* @access private
*/
function db_Select_gen($query, $debug = FALSE, $log_type = '', $log_remark = '')
{
/*
changes by jalist 19/01/05:
added string replace on table prefix to tidy up long database queries
usage: instead of sending "SELECT * FROM ".$this->mySQLPrefix."table", do "SELECT * FROM #table"
Returns result compatible with mysql_query - may be TRUE for some results, resource ID for others
*/
$this->tabset = FALSE;
if(strpos($query,'`#') !== FALSE)
{
$query = preg_replace_callback("/\s`#([\w]*?)`\W/", array($this, 'ml_check'), $query);
}
elseif(strpos($query,'#') !== FALSE)
{
$query = preg_replace_callback("/\s#([\w]*?)\W/", array($this, 'ml_check'), $query);
}
if (($this->mySQLresult = $this->db_Query($query, NULL, 'db_Select_gen', $debug, $log_type, $log_remark)) === TRUE)
{ // Successful query which doesn't return a row count
$this->dbError('db_Select_gen');
return TRUE;
}
elseif ($this->mySQLresult === FALSE)
{ // Failed query
$this->dbError('dbQuery ('.$query.')');
return FALSE;
}
else
{ // Successful query which does return a row count - get the count and return it
$this->dbError('db_Select_gen');
return $this->db_Rows();
}
}
function ml_check($matches)
{
$table = $this->db_IsLang($matches[1]);
if($this->tabset == false)
{
$this->mySQLcurTable = $table;
$this->tabset = true;
}
return ' `'.$this->mySQLPrefix.$table.'`'.substr($matches[0],-1);
}
/**
* @return unknown
* @param unknown $offset
* @desc Enter description here...
* @access private
*/
function db_Fieldname($offset) {
$result = @mysql_field_name($this->mySQLresult, $offset);
return $result;
}
/**
* @return unknown
* @desc Enter description here...
* @access private
*/
function db_Field_info() {
$result = @mysql_fetch_field($this->mySQLresult);
return $result;
}
/**
* @return unknown
* @desc Enter description here...
* @access private
*/
function db_Num_fields() {
$result = @mysql_num_fields($this->mySQLresult);
return $result;
}
/**
* @return unknown
* @param unknown $table
* @desc Enter description here...
* @access private
*/
function db_IsLang($table,$multiple=FALSE) {
global $pref, $mySQLtablelist;
if ((!$this->mySQLlanguage || !$pref['multilanguage']) && $multiple==FALSE) {
return $table;
}
if(!$this->mySQLaccess)
{
global $db_ConnectionID;
$this->mySQLaccess = $db_ConnectionID;
}
if (!$mySQLtablelist) {
$tablist = mysql_list_tables($this->mySQLdefaultdb,$this->mySQLaccess);
while (list($temp) = mysql_fetch_array($tablist)) {
$mySQLtablelist[] = $temp;
}
}
$mltable = "lan_".strtolower($this->mySQLlanguage.'_'.$table);
// ---- Find all multi-language tables.
if($multiple == TRUE){ // return an array of all matching language tables. eg [french]->e107_lan_news
if(!is_array($table)){
$table = array($table);
}
foreach($mySQLtablelist as $tab){
if(stristr($tab, $this->mySQLPrefix."lan_") !== FALSE){
$tmp = explode("_",str_replace($this->mySQLPrefix."lan_","",$tab));
$lng = $tmp[0];
foreach($table as $t){
if(eregi($t."$",$tab)){
$lanlist[$lng][$this->mySQLPrefix.$t] = $tab;
}
}
}
}
return ($lanlist) ? $lanlist : FALSE;
}
// -------------------------
if (in_array($this->mySQLPrefix.$mltable, $mySQLtablelist)) {
return $mltable;
}
return $table;
}
/**
* @return array
* @param string fields to retrieve
* @desc returns fields as structured array
* @access public
*/
function db_getList($fields = 'ALL', $amount = FALSE, $maximum = FALSE, $ordermode=FALSE) {
$list = array();
$counter = 1;
while ($row = $this->db_Fetch()) {
foreach($row as $key => $value) {
if (is_string($key)) {
if (strtoupper($fields) == 'ALL' || in_array ($key, $fields)) {
if(!$ordermode)
{
$list[$counter][$key] = $value;
}
else
{
$list[$row[$ordermode]][$key] = $value;
}
}
}
}
if ($amount && $amount == $counter || ($maximum && $counter > $maximum)) {
break;
}
$counter++;
}
return $list;
}
/**
* @return integer
* @desc returns total number of queries made so far
* @access public
*/
function db_QueryCount() {
global $db_mySQLQueryCount;
return $db_mySQLQueryCount;
}
/*
Multi-language Query Function.
*/
function db_Query_all($query,$debug=""){
$error = "";
$query = str_replace("#",$this->mySQLPrefix,$query);
if(!$this->db_Query($query)){ // run query on the default language first.
$error .= $query. " failed";
}
$tmp = explode(" ",$query);
foreach($tmp as $val){
if(strpos($val,$this->mySQLPrefix) !== FALSE){
$table[] = str_replace($this->mySQLPrefix,"",$val);
$search[] = $val;
}
}
// Loop thru relevant language tables and replace each tablename within the query.
if($tablist = $this->db_IsLang($table,TRUE)){
foreach($tablist as $key=>$tab){
$querylan = $query;
foreach($search as $find){
$lang = $key;
$replace = ($tab[$find] !="") ? $tab[$find] : $find;
$querylan = str_replace($find,$replace,$querylan);
}
if(!$this->db_Query($querylan)){ // run query on other language tables.
$error .= $querylan." failed for language";
}
if($debug){ echo "<br />** lang= ".$querylan; }
}
}
return ($error)? FALSE : TRUE;
}
// Determines if a plugin field (and key) exist. OR if fieldid is numeric - return the field name in that position.
// If $retinfo is true, returns complete array of field data; FALSE if not found
function db_Field($table,$fieldid="",$key="", $retinfo = FALSE)
{
if(!$this->mySQLdefaultdb)
{
global $mySQLdefaultdb;
$this->mySQLdefaultdb = $mySQLdefaultdb;
}
$convert = array("PRIMARY"=>"PRI","INDEX"=>"MUL","UNIQUE"=>"UNI");
$key = ($convert[$key]) ? $convert[$key] : "OFF";
if(!$this->mySQLaccess)
{
global $db_ConnectionID;
$this->mySQLaccess = $db_ConnectionID;
}
$result = mysql_query("SHOW COLUMNS FROM ".$this->mySQLPrefix.$table,$this->mySQLaccess);
if (mysql_num_rows($result) > 0)
{
$c=0;
while ($row = mysql_fetch_assoc($result))
{
if(is_numeric($fieldid))
{
if($c == $fieldid)
{
if ($retinfo) return $row;
return $row['Field']; // field number matches.
}
}
else
{ // Check for match of key name - and allow that key might not be used
if(($fieldid == $row['Field']) && (($key == "OFF") || ($key == $row['Key'])))
{
if ($retinfo) return $row;
return TRUE;
}
}
$c++;
}
}
return FALSE;
}
/**
* A pointer to mysql_real_escape_string() - see http://www.php.net/mysql_real_escape_string
*
* @param string $data
* @return string
*/
function escape($data, $strip = true)
{
if ($strip)
{
$data = strip_if_magic($data);
}
if(!$this->mySQLaccess)
{
global $db_ConnectionID;
$this->mySQLaccess = $db_ConnectionID;
}
return mysql_real_escape_string($data,$this->mySQLaccess);
}
/*
* Verify whether a table exists, without causing an error
*
* @param string $table
* @return string
*
* NOTES: the 'official' way to do this uses SHOW TABLE STATUS, but that is 20x slower!
* LIMIT 0 is 3x slower than LIMIT 1
*/
function db_Table_exists($table){
$res = $this->db_Query("SELECT 1 FROM ".$this->mySQLPrefix.$table." LIMIT 1"); // error if not there
if ($res) return TRUE;
return FALSE;
}
}
?>