config.php

<?php
	session_start();

	$bdd = new PDO('mysql:host=localhost;dbname=hsh', 'root', '', [PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8']);
	$bdd->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

/*----------------------------------------------------------------------------------------------------------------------------*/

	function escape($text)
		{
		return htmlspecialchars($text, ENT_QUOTES); 
		}

/*----------------------------------------------------------------------------------------------------------------------------*/

	function showErrors($messages)
		{
        $messages = (array) $messages;
 
        //Count != 0 donc ça équivaut à un true pour php
        if(count($messages))
        	{
            foreach($messages AS $error)
            	{
?>

	<span class="error"><?= escape($error); ?></span>

<?php
                }
        	}
		}

/*----------------------------------------------------------------------------------------------------------------------------*/

	function isConnected()
		{ 
		return isset($_SESSION["logged"]) && $_SESSION["logged"]; 
		}
?>