<?php

class WDB {
  
	private $host;
	private $database;
	private $user;
	private $password;
	private $con_id;	// Connection ID with MySQL
	private $result;

	public function __construct($database='', $host='', $user='', $password='') {
	
		if ($host=='')		$this->host=MYSQL_HOST;
		else 				$this->host=$host;
		if ($user=='')		$this->user=MYSQL_USER;
		else 				$this->user=$user;
		if ($password=='')	$this->password=MYSQL_PASS;
		else 				$this->password=$password;
		if ($database=='')	$this->database=MYSQL_DEFAULT_DB;
		else 				$this->database=$database;
		
		//if (defined(MYSQL_PORT)) $this->host = $this->host.':'.MYSQL_PORT;
		$this->host = $this->host.':53336';
		
	    $this->con_id = mysql_connect($this->host, $this->user, $this->password);
        if (!($this->con_id === false)) {
            if (mysql_select_db($this->database, $this->con_id) === false) {
 				echo date('Y/m/d - H:i:s') ." - ERREUR ".mysql_errno()." : Connection à la base de données impossible !".EOL;
				echo date ('Y/m/d - H:i:s'). mysql_error();
				die();
			}
        }
       return mysql_query("SET NAMES 'utf8';", $this->con_id);
	}

	public function setCharSet($charSet) {
		return (mysql_query("SET CHARACTER SET $charSet;",  $this->con_id));
	}

	private function setDB() {
		return (mysql_query("USE $this->database;",  $this->con_id));
	}

	/** INSERTION d'un tableau dans une table.
	 ** Les index doivent avoir les mêmes noms que les champs.
	 ** @param string Table
	 ** @param array  Valeurs  insérer
	 ** @return int Dernière valeur de l'auto-incrément, 1 si pas d'auto-incrément et 0 si erreur
	 **/
public function insert($table, $toAdd, $debug=false, $low_priority=false){
		$this->setDB();
		$fields = implode(array_keys($toAdd), '`,`');
		foreach (array_values($toAdd) as $key=>$array_values)
			$tmp[$key]=checkaddslashes($array_values);

	 	$values = "'".implode(array_values($tmp), "','")."'"; # better
		$values = str_replace("'NULL'", 'NULL', $values);
	
	if ($low_priority)
		$query = 'INSERT DELAYED INTO `'.$table.'` (`'.$fields.'`) VALUES ('.$values.');';
	else
		$query = 'INSERT INTO `'.$table.'` (`'.$fields.'`) VALUES ('.$values.');';


		if ($debug) $tdeb=microtime(true);
		$res = mysql_query($query, $this->con_id);
		if ($res!==false)
		{
			if (mysql_insert_id()>0)
				$res=mysql_insert_id();
			else
				$res=true;
		}
		if ($debug)	$this->trace($query, $res, $tdeb);
		return $res;
	}

public function update($table, $update, $where, $debug=false, $limit=0, $low_priority=false){
		$this->setDB();
		$fields = array_keys($update);
		$values = array_values($update);
		$i=0;
	if ($low_priority)
		$query='UPDATE LOW_PRIORITY `'.$table.'` SET ';
	else
		$query='UPDATE `'.$table.'` SET ';
		while(isset($fields[$i])){
			if($i>0) { $query.=', '; }
			$query.=' `'.$fields[$i]."`='".checkaddslashes($values[$i])."'";
			$i++;
		}
		$query = str_replace("'NULL'", 'NULL', $query);
	    $query.=' WHERE '.$where;
		if ($limit>0) $query.=" LIMIT $limit";
		if ($debug) $tdeb=microtime(true);
		$res=mysql_query($query, $this->con_id);
		if ($debug)	$this->trace($query, $res, $tdeb);
		return $res;
	}

public function delete($table, $where, $debug=false, $low_priority=false) {
		$this->setDB();
	if ($low_priority)
		$query='DELETE LOW_PRIORITY QUICK FROM `'.$table.'` WHERE '.$where.' LIMIT 1;';
	else
		$query='DELETE FROM `'.$table.'` WHERE '.$where.' LIMIT 1;';
		if ($debug) $tdeb=microtime(true);
		$res=mysql_query($query, $this->con_id);
		if ($debug)	$this->trace($query, $res, $tdeb);
		return $res;
	}

	public function select($table, $fields, $where, $debug=false, $assoc=MYSQL_BOTH, $huge=false) {
		$this->setDB();
		if (mysql_select_db($this->database, $this->con_id) === false) {
	 		echo date('Y/m/d - H:i:s') ." - ERREUR ".mysql_errno()." : Connection à la base de données impossible !".EOL;
			echo date ('Y/m/d - H:i:s'). mysql_error();
			die();
		}
		$query="SELECT $fields FROM $table WHERE $where;";
		if ($debug) $tdeb=microtime(true);
		$this->result=mysql_query($query, $this->con_id);// or die(mysql_error());
		if  (mysql_errno())	{
			$fpErr=fopen(LOG_PATH.'/sqlerror.log','a');
			fwrite($fpErr, date('YmdHis'). ' - '.$query .EOL);
			fwrite($fpErr, date('YmdHis'). ' - '.mysql_errno() .' - '. mysql_error().EOL);
			return false;
		}
	//	echo ;
		if (!$huge) {
		$tab=array();
		while ($ligne = mysql_fetch_array($this->result, $assoc))
			$tab[]=$ligne;

		if ($debug)	$this->trace($query, sizeof($tab), $tdeb);
		return $tab;
		} else {
			$nbRows=mysql_num_rows($this->result);
			if ($debug)	$this->trace($query, $nbRows, $tdeb);
			return $nbRows;
		}
	}

	public function fetch($assoc=MYSQL_BOTH) {
			return mysql_fetch_array($this->result, $assoc);
	}

	public function trace($query, $res='', $tdeb=-1) {
	        if (!$fp=fopen(LOG_PATH.'/mysql_insert.log', 'a'))
	                return false;
	        $errnum=mysql_errno($this->con_id);
	        if ($tdeb>-1)	$duree=substr(''.microtime(true)-$tdeb, 0, 5);
	        else			$duree='N/D';
	        if (!fwrite($fp, date('Y/m/d - H:i:s') ." - $errnum - $res - $duree - $query\n"))
	                return false;
	        if (!fclose($fp))
	                return false;
	        return true;
	}

	/** Exécute la requête passé en paramètre **/
	public function query($query, $debug=false){
		$this->setDB();
		$this->result=mysql_query($query, $this->con_id);
		return $this->result;
	}

	/** Retourne le nombre de records de la dernière requête de sélection **
	public function getNumRows() {
		return mysql_num_rows($this->con_id);
	}
	*/
	/** Retourne le libellé de la dernière erreur **/
	public function getLastErrorMsg() {
		return mysql_error($this->con_id);
	}
	/** Retourne le numéro de la dernière erreur **/
	public function getLastErrorNum() {
		return mysql_errno($this->con_id);
	}

	/** Retourne le libellé et le numéro de la dernière erreur **/
	public function getLastError() {
		return mysql_error($this->con_id).' ('.mysql_errno($this->con_id).')';
	}

	/** Retourne le nombre de lignes modifiées par la dernière requête **/
	public function getAffectedRows() {
		return mysql_affected_rows($this->con_id);
	}

	/** Génère le fichier CSV pour la requete SQL
	 **
	 ** @param string $query
	 ** @param string $fileCsv
	 ** @return bool
	 */
	public function exportCSV($query, $fileCsv, $sep=',', $eol=EOL) {
		$i=$c=0;
		$fp = fopen($fileCsv, 'w');
		if (!$fp)	return false;

		$res=$this->query($query);
		$nbLignes=mysql_num_rows($res);

		while ($ligne=$this->fetch(MYSQL_ASSOC)) {
			if ($i==0) {
				$nbCols=count($ligne);
				foreach ($ligne as $libCol=>$col) {
					$c++;
					if ($c<$nbCols)	fwrite($fp, str_replace($sep,' ', $libCol).$sep);
					else 			fwrite($fp, str_replace($sep,' ', $libCol));
				}
				fwrite($fp, $eol);
			}
			$c=0;
			foreach ($ligne as $libCol=>$col) {
				$c++;
				if ($c<$nbCols)	fwrite($fp, str_replace($sep,' ', $col).$sep);
				else 			fwrite($fp, str_replace($sep,' ', $col));
			}
			fwrite($fp, $eol);
			$i++;
		}
		fclose($fp);
		return $nbLignes;//$this->getAffectedRows();
	}

}
?>