created api for getting all posts

res/forum/api/get_posts.php

@@ -0,0 +1,35 @@
+<?php
+
+include("../../global.php");
+session_start();
+
+if (!isset($_SESSION["username"])) goto fail;
+
+$out = $database -> query("SELECT username FROM user WHERE BINARY username=\"" . $_SESSION["username"] . "\"");
+
+if ($out -> num_rows != 1)
+{
+    fail:
+    echo "nope";
+    header("Location: ../../../index.php");
+    return;
+}
+
+$out = $database -> query("SELECT title, description, photo_id FROM post");
+
+$output = array();
+
+while (($res = $out -> fetch_assoc()))
+{
+    $buffer_array = array();
+
+    foreach ($res as $key => $value)
+    {
+        $buffer_array[$key] = $value;
+    }
+
+    array_push($output, $buffer_array);
+}
+
+header('Content-type: application/json');
+echo json_encode($output);