PHP Loading data from mysql according to time -


i creating social networking website using php , mysql. facing problem in loading posts of friends , current user, , arranging them according recent. here program, know not method manage code.

<?php if(isset($_cookie["uid"])) {     include("includes/functions.php");     include("includes/config.php");     $uid=$_cookie["uid"];     $posts=array();     $friends=array();     $sql="select * posts uid='$uid'";     $result = $conn->query($sql);     if ($result->num_rows > 0) {         while($row = $result->fetch_assoc()) {             $posts[]=[$row["pid"],$row["uid"],$row["post"],$row["time"]];         }     }     $sql="select * friends uid1='$uid' or uid2='$uid' , status='1'";     $result = $conn->query($sql);     if ($result->num_rows > 0) {         while($row = $result->fetch_assoc()) {             if($uid1==$uid){$friends[]=$uid2;}else{$friends[]=$uid1;}         }     }     for($i=0;$i<count($friends);$i++)     {         $temp_uid=$friends[$i];         $sql="select * posts uid='$temp_uid'";         $result = $conn->query($sql);         if ($result->num_rows > 0) {             while($row = $result->fetch_assoc()) {                 $posts[]=[$row["pid"],$row["uid"],$row["post"],$row["time"]];             }         }     }     $eo=0;     for($i=0;$i<count($posts);$i++)     {         echo "username: ".u2u($posts[$i][1])."<br>post message: ".nl2br($posts[$i][2])."<br>time: ".t2t($posts[$i][3])."<p>";     }  } else {     echo "error"; } ?>

config.php

<?php $servername = "localhost"; $username = "root"; $password = ""; $dbname = "evenure";  // create connection $conn = new mysqli($servername, $username, $password, $dbname); // check connection if ($conn->connect_error) {     die("connection failed: " . $conn->connect_error); } ?>

functions.php

<?php function u2u($temp_uid){     require("../config.php");     $sql="select username users uid='$temp_uid'";     $result = $conn->query($sql);     if ($result->num_rows > 0) {         while($row = $result->fetch_assoc()) {             return $row["username"];         }     }     else     {         return "invalid uid";     } }  function t2t($temp_time){     date_default_timezone_set('asia/kolkata');     $etime = time() - $temp_time;      if ($etime < 1)     {         return '0 seconds';     }      $a = array( 365 * 24 * 60 * 60  =>  'year',                  30 * 24 * 60 * 60  =>  'month',                       24 * 60 * 60  =>  'day',                            60 * 60  =>  'hour',                                 60  =>  'minute',                                  1  =>  'second'                 );     $a_plural = array( 'year'   => 'years',                        'month'  => 'months',                        'day'    => 'days',                        'hour'   => 'hours',                        'minute' => 'minutes',                        'second' => 'seconds'                 );      foreach ($a $secs => $str)     {         $d = $etime / $secs;         if ($d >= 1)         {             $r = round($d);             return $r . ' ' . ($r > 1 ? $a_plural[$str] : $str) . ' ago';         }     } } ?>

my above codes work problem not able arrange them according recent time, i.e., load new posts first , old posts.

<?php if(isset($_cookie["uid"])) {     include("includes/functions.php");     include("includes/config.php");     $uid=$_cookie["uid"];     $posts = [];     $friends = [];     $sql="select uid1, uid2 friends uid1='$uid' or uid2='$uid' , status='1'";     $result = $conn->query($sql);     if ($result->num_rows > 0) {         while($row = $result->fetch_assoc()) {             $friends[$uid1] = $uid1;             $friends[$uid2] = $uid2;          }     }     $friends[$uid] = $uid;     // $friends contain friends , person himself      $friendssql = implode(', ', $friends);     $sql="select * posts uid in ($friendssql)' order posts.time desc";     $result = $conn->query($sql);     if ($result->num_rows > 0) {         while($row = $result->fetch_assoc()) {             $posts[]=[$row["pid"],$row["uid"],$row["post"],$row["time"]];         }     }     // $posts contain posts of person , friends in desc order }

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