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<?php
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namespace core;
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use core\HTML\flashmessage\FlashMessage;
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use PDO;
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class Database {
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private $db_type;
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private $db_name;
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private $db_user;
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private $db_pass;
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private $db_host;
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private $dbc;
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//-------------------------- CONSTRUCTEUR ----------------------------------------------------------------------------//
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public function __construct($db_type, $db_name, $db_user, $db_pass, $db_host) {
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$this->db_type = $db_type;
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$this->db_name = $db_name;
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$this->db_user = $db_user;
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$this->db_pass = $db_pass;
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$this->db_host = $db_host;
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}
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//-------------------------- FIN CONSTRUCTEUR ----------------------------------------------------------------------------//
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//-------------------------- GETTER ----------------------------------------------------------------------------//
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/**
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* function qui fait la connexion a la bdd ne peu etre appelee que dans la classe
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* @return PDO
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*/
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private function getPdo() {
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if ($this->dbc === null) {
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$dbc = new PDO($this->db_type.':host='.$this->db_host.';dbname='.$this->db_name, $this->db_user, $this->db_pass);
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$dbc->exec("set names utf8");
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$this->dbc = $dbc;
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}
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return $this->dbc;
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}
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//-------------------------- FIN GETTER ----------------------------------------------------------------------------//
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//-------------------------- FUNCTION QUI FONT DES REQUETES SUR LA BDD --------------------------------------------//
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/**
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* effectue une requete en selectr dans la BDD, si ok on renvoit les donnees sinon on renvoi une erreur
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* @param $req
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* @return array
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*/
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public function query($req) {
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$query = $this->getPdo()->query($req);
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if ($query) {
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$obj = $query->fetchAll(PDO::FETCH_OBJ);
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return $obj;
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}
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else {
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FlashMessage::setFlash("Une erreur est survenue en executant cette requette : ".$req);
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}
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}
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/**
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* fonction qui prepare une requete et qui l'envoi, marche pour insert et update et delete
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* @param $req -> la req a executer
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* @param $value -> le ou les tableaux de valeurs
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*/
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public function prepare($req, $value) {
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$query = $this->getPdo()->prepare($req);
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//si on a plusieurs tableaux
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if (array_key_exists(0, $value)) {
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foreach ($value as $val) {
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if (!$query->execute($val)) {
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$err = true;
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}
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}
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}
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else {
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if (!$query->execute($value)) {
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$err = true;
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}
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}
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//si on a une erreur on renvoi un message
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if (isset($err)) {
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FlashMessage::setFlash("Une erreur est survenue en executant cette requette : ".$req);
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}
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}
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/**
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* pour savoir si une valeur sur un champ précis existe deja en bdd, renvoi true si vrai
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* @param $table
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* @param $champ
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* @param $value
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* @return boolean|null
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*/
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public function rechercherEgalite($table, $champ, $value, $id_table = null, $id = null) {
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if ($id == null) {
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$query = $this->getPdo()->query("SELECT COUNT($champ) as nb FROM $table WHERE $champ LIKE '$value'");
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}
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else {
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$query = $this->getPdo()->query("SELECT COUNT($champ) as nb FROM $table WHERE $champ LIKE '$value' AND $id_table != $id");
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}
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if (count($query) > 0) {
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foreach ($query as $obj) {
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$nb = $obj["nb"];
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}
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if ((isset($nb)) && ($nb != 0)) return true;
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}
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else {
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return false;
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}
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}
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//-------------------------- FIN FUNCTION QUI FONT DES REQUETES SUR LA BDD --------------------------------------------//
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/**
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* tester si une table dans la base donnee existe
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* @param string $table definit la table pour laquelle on doit tester l'existance
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* @return boolean
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*/
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public function TestTableExist($table) {
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$query = $this->getPdo()->query("SHOW TABLES LIKE '$table'");
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if ($query->rowCount() > 0) {
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return true;
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}
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else {
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return false;
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}
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}
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public function quote($quote) {
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return $this->getPdo()->quote($quote);
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}
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public function lastInsertId() {
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return $this->getPdo()->lastInsertId();
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}
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//-------------------------- QUERY BUILDER in construction no test have been done --------------------------------------------//
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private $fiels = [];
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private $conditions = [];
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private $from = [];
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public function select() {
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$this->fiels = func_get_args();
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return $this;
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}
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public function where() {
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foreach (func_get_args() as $arg) {
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$this->conditions[] = $arg;
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}
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return $this;
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}
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public function from($table, $alias) {
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if (is_null($alias)) {
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$this->from[] = $table;
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}
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else {
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$this->from[] = "$table as $alias";
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}
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return $this;
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}
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public function getQuery() {
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return "SELECT ". implode(", ", $this->fiels) . " FROM " . implode(",", $this->from) . " WHERE " . implode(" AND ", $this->conditions);
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}
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} |
Piou-piou /
ribs-framework
