web2

web2/php/database.php

@@ -0,0 +1,127 @@
+<?php
+  require_once('constants.php');
+
+  //----------------------------------------------------------------------------
+  //--- dbConnect --------------------------------------------------------------
+  //----------------------------------------------------------------------------
+  // Create the connection to the database.
+  // \return False on error and the database otherwise.
+  function dbConnect()
+  {
+    try
+    {
+      $db = new PDO('mysql:host='.DB_SERVER.';dbname='.DB_NAME.';charset=utf8',
+        DB_USER, DB_PASSWORD);
+      $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); 
+    }
+    catch (PDOException $exception)
+    {
+      error_log('Connection error: '.$exception->getMessage());
+      return false;
+    }
+    return $db;
+  }
+
+  //----------------------------------------------------------------------------
+  //--- dbRequestAlertes --------------------------------------------------------
+  //----------------------------------------------------------------------------
+  // Function to get all alertes 
+  // \param db The connected database.
+  // \return The list of alertes.
+  function dbRequestAlerts($db)
+  {
+    try
+    {
+      $request = 'SELECT * FROM alertes';
+      $statement = $db->prepare($request);
+      $statement->execute();
+      $result = $statement->fetchAll(PDO::FETCH_ASSOC);
+    }
+    catch (PDOException $exception)
+    {
+      error_log('Request error: '.$exception->getMessage());
+      return false;
+    }
+    return $result;
+  }
+
+  //----------------------------------------------------------------------------
+  //--- dbAddCTweet ------------------------------------------------------------
+  //----------------------------------------------------------------------------
+  // Add a tweet.
+  // \param db The connected database.
+  // \param login The login of the user.
+  // \param text The tweet to add.
+  // \return True on success, false otherwise.
+  function dbAddTweet($db, $login, $text)
+  {
+    try
+    {
+      $request = 'INSERT INTO tweets(login, text) VALUES(:login, :text)';
+      $statement = $db->prepare($request);
+      $statement->bindParam(':login', $login, PDO::PARAM_STR, 20);
+      $statement->bindParam(':text', $text, PDO::PARAM_STR, 80);
+      $statement->execute();
+    }
+    catch (PDOException $exception)
+    {
+      error_log('Request error: '.$exception->getMessage());
+      return false;
+    }
+    return true;
+  }
+  
+  //----------------------------------------------------------------------------
+  //--- dbModifyTweet ----------------------------------------------------------
+  //----------------------------------------------------------------------------
+  // Function to modify a tweet.
+  // \param db The connected database.
+  // \param id The id of the tweet to update.
+  // \param login The login of the user.
+  // \param text The new tweet.
+  // \return True on success, false otherwise.
+  function dbModifyTweet($db, $id, $login, $text)
+  {
+    try
+    {
+      $request = 'UPDATE tweets SET text=:text WHERE id=:id AND login=:login ';
+      $statement = $db->prepare($request);
+      $statement->bindParam(':id', $id, PDO::PARAM_INT);
+      $statement->bindParam(':login', $login, PDO::PARAM_STR, 20);
+      $statement->bindParam(':text', $text, PDO::PARAM_STR, 80);
+      $statement->execute();
+    }
+    catch (PDOException $exception)
+    {
+      error_log('Request error: '.$exception->getMessage());
+      return false;
+    }
+    return true;
+  }
+
+  //----------------------------------------------------------------------------
+  //--- dbDeleteTweet ----------------------------------------------------------
+  //----------------------------------------------------------------------------
+  // Delete a tweet.
+  // \param db The connected database.
+  // \param id The id of the tweet.
+  // \param login The login of the user.
+  // \return True on success, false otherwise.
+  function dbDeleteTweet($db, $id, $login)
+  {
+    try
+    {
+      $request = 'DELETE FROM tweets WHERE id=:id AND login=:login';
+      $statement = $db->prepare($request);
+      $statement->bindParam(':id', $id, PDO::PARAM_INT);
+      $statement->bindParam(':login', $login, PDO::PARAM_STR, 20);
+      $statement->execute();
+    }
+    catch (PDOException $exception)
+    {
+      error_log('Request error: '.$exception->getMessage());
+      return false;
+    }
+    return true;
+  }
+?>