PHP&MySQL tarih ve saat

 
  <?php 
  include_once('dbcon.php'); 
  $select=""; 
  function check_value($value) 
  { 
      $value = htmlspecialchars($value); 
      $value = mysql_real_escape_string($value); 
      return $value; 
       
  } 
       
      @$value = $_POST['value']; 
      if(check_value($value)) 
      { 
           
          $tarih = strtotime(date("Y-m-d H:i:s")); 
          mysql_query("INSERT INTO post VALUES('0','$value','$tarih')"); 
          $select = mysql_query("SELECT * FROM post WHERE post = '$value'"); 
      } 
      else{ 
      $select = mysql_query("SELECT * FROM post ORDER BY tarih DESC"); 
      } 
      while($row = mysql_fetch_assoc($select)) 
      { 
          ?> 
          <div class="eachpost" id="post-<?php echo $row['id']; ?>"> 
          <span><?php echo $row['post']; ?></span><br> 
          <abbr><?php echo date("Y-m-d H:i:s" , $row['tarih']); ?></abbr> 
          </div> 
          <?php 
   
      } 
       
  ?>