php - comment-reply jquery gets reply and store it in table but not comment_id -


i have created comment-reply system usign php , jquery. code includes function comments , using jquery trying comments_id id each comment , reply , save table called comments_reply. problem cannot comments_id, can successfuly reply , store in comments_reply table. idea why code cannot comments_id store it?

this function in php including jquery:

<?php  <script>  $(document).ready(function(){    $('.reply').keyup(function(e){     if(e.keycode == 13){         var comments_id = $(this).attr('comments_id');         var reply = $(this).val();         $.post('reply.php', {comments_id:comments_id, reply:reply});           $('.reply').val('');         }  });  });  </script>   function getcomments(){  $comments = "";  $sql = mysql_query("select * comments order comment_date desc ") or die (mysql_error());  if(mysql_num_rows($sql) == 0){     $comments = " <div class='each_comment'> there no comments ...</div> "; } else {   while ($row= mysql_fetch_assoc($sql)){          $comments .= "user says : <div class='each_comment'> ".$row['comment_date']."".$row['comment']."  <input type='text' class='reply' comments_id='<?php ".$row['comments_id']." ?>' />      </div> ";    }  }    return $comments;   } ?>

and page: reply.php 

<?php  $comments_id = $_post['comments_id'];  $reply = $_post['reply'];   mysql_query("insert comments_reply values ('', '$comments_id', '$reply') ");   ?>

to prevent confusion between value , propery name (being same) when submitting server should add quotes name.

$('.reply').keyup(function(e){     if(e.keycode == 13){         var comments_id = $(this).attr('comments_id');         var reply = $(this).val();         $.post('reply.php', {"comments_id":comments_id, "reply":reply});           $('.reply').val('');         }  });

that may fix issue

edit

i change custom html attribute names so:

change comments_id data-comment-id , reply data-reply sake of convention , possibly usefull html5 support , don't forget update usages (in html , javscript code).

i have noticed sql code values ('', '$comments_id', '$reply') shows inserting blank value first column in table there reason this?

edit2

for when people @ answer instead of reading comments of answer put here:

replace

<input type='text' class='reply' comments_id='<?php ".$row['comments_id']." ?>' />

with

<input type='text' class='reply' comments_id='{$row['comments_id']}' />

or id include unwanted characters.


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