Question

Guys im trying to join a comments table to posts table using the following query in a method.

public function feedView($session,$friend,$updateid) {
         $sql2=" select  u.update&#95;body,u.author,u.time,u.title,u.account&#95;name,u.update&#95;id,"
            . "c.comment&#95;body, c.os&#95;id,c.author&#95;c,c.time&#95;c,c.comment&#95;id,c.type&#95;c  "
            . "from updates u join comment&#95;update c "
            . "on c.os&#95;id=:statusid WHERE u.account&#95;name = :session or u.account&#95;name=:friend and (u.type = 'a' or 'c') order by u.time asc,c.time&#95;c desc";
    $stmth=  $this->&#95;db->prepare($sql2);
    $stmth->bindValue(":session",$&#95;SESSION['uname']);
    $stmth->bindValue(":friend",$friend);
    $stmth->bindValue(":statusid",$updateid);
    $stmth->execute();
    return $stmth->fetchAll(PDO::FETCH&#95;ASSOC);
    }

it prints the posts fine but the problem is with comments content where it seems to print the comments in the same posts twice. don't know where the bug is coming from.

here is the DB schema:

here is the how it is displaying feeds:-

here is the full code for the post and comments logic as asked by partykar:-

<?php
include "includes/dbconfig.inc.php";
    $status_replies="";
       $status_list="";
       $statusui_edit="";
       $isowner="";
       $is_friend="";
       $friends = array();
$stmt=  $conn->prepare("select friend_one, friend_two from friends where "
        . "(friend_one=:session OR friend_two=:session) and accepted='1'");
$stmt->bindparam(":session",$_SESSION['uname']);
$stmt->execute();


foreach ($stmt->fetchAll(PDO::FETCH_ASSOC) as $i=> $r ) {
    $r["friend_one"] == $_SESSION['uname'] ? $friends[]= $r["friend_two"] : $friends[] = $r["friend_one"]; 
$friend=$friends[$i];
//fetch update_id from user table in db and inject it to the feed query.
$status2view=$project->statusView($_SESSION['uname']);
foreach ($status2view as $val) {
   $updateid=$val['update_id'];

//select all relevant posts and comments using the following query and print it.
$feedView=$project->feedView($_SESSION['uname'],$friend,$updateid);

          foreach  ($feedView as $row1) {

                $status_reply_id=$row1['comment_id'];
                $reply_d=htmlentities($row1['comment_body']);
                $reply_data=  stripslashes($reply_d);
                $reply_osid=$row1['os_id'];
                $reply_date=$row1['time_c'];
                $reply_author=$row1['author_c'];
                $updateid=$row1['update_id'];
                $account_name=$row1['account_name'];
                $os_id=$row1['os_id'];
                $author=$row1['author'];
                $post_date=$row1['time'];
                $title= stripslashes($row1['title']);
                $data= stripslashes($row1['update_body']);
                $statusdeletebutton='';     
                $reply_delete_button="";
        if ($reply_author==$_SESSION['uname'] ) {
                   $reply_delete_button="<li><a href='#'type='".$status_reply_id."' class='delete_reply_btn glyphicon glyphicon-trash delete_reply_".$status_reply_id."' title='Delete this comment'> Remove</a></span></li>";
               } 


                         $status_replies="<div  class='replyboxes pull-left reply_".$status_reply_id."'>"
                      . "Reply by:- "
                      . "<a href='home.php?u=".$reply_author."'>".$reply_author."</a>"
                      . "<span class='pull-right'>".$reply_date 
                       . "<b class='dropdown'>
                         <small><span class='btn btn-xs btn-danger dropdown-toggle pull-right' data-toggle='dropdown'  >
                         <span class='glyphicon glyphicon-edit'></span></span>
                        <ul class='dropdown-menu'>".$reply_delete_button
                      . "<li><a class='glyphicon glyphicon-warning-sign' href='report.php?u=".$reply_author."'> Report</a><li></ul></span>"
                      . "</small></b><br><legend>".  html_entity_decode($reply_data)."</legend><br></div>";




              if ($author==$_SESSION['uname'] || $account_name==$_SESSION['uname']) {
                $statusdeletebutton='<li>'
                           . '<a href="#" type="'.$updateid.'" class="delete_4_session hidden_text_delete_'.$updateid.' glyphicon glyphicon-trash delete_reply_btn" title="Delete this status and its replies">Remove</a></li>';
                $edit_btn='<li>'
                        . '<a href="#" attr="'.$updateid.'" type="'.$updateid.'" class="edit_4_session hidden_text_edit glyphicon glyphicon-pencil" title="Edit this status" >Edit</a></li>';

                }



                $status_list= $statusui_edit.'<div attr="'.$updateid.'" type="'.$updateid.'" class="statusboxes status_'.$updateid.'  jumbotron">'
                        . '<h3 style="color:black; margin-bottom:5px; margin-top:5px;" class="pull-left">'
                        . '<div id="'.$updateid.'" class="title_s_2copy" value="'.html_entity_decode($title).'">'.html_entity_decode($title).'</div></h3>'
                        . '<span class="pull-right">'
                        . '<div class="dropdown">'
                        . '<button type="button" class="btn btn-danger dropdown-toggle" data-toggle="dropdown"  >'
                        . '<span class="glyphicon glyphicon-edit"></span></button>'
                        . '<ul class="dropdown-menu">'
                         .$edit_btn .' '. $statusdeletebutton .'</ul></div></span><br><hr>'
                        . '<legend><span class=" data_s_2copy" type="'.$updateid.'" >'
                        . html_entity_decode($data).'</span><br><br></legend><b style="text-align:right; color:black;"><small>Posted by:-  <a href="home.php?u='.$author.'">'.$author.   '</a>   '.$post_date.'</small></b>'
                        . '<br><p>'.$status_replies.'</p><br>';

                    $status_list.= '<textarea id="reply_textarea_'.$updateid.'"  class="status_reply_'.$updateid.' input-custom2" placeholder="comment\'s"></textarea>'
                            . '<button id="reply_btn_'.$updateid.'" attr="'.$updateid.'" type="b" class="btn btn-warning pull-right btn-sm reply_btn reply_'.$updateid.'">Reply</button></div>';



               echo "$status_list";




}         }        }

Answer 1

Your JOIN query will duplicate the table records you are joining to, so your news will be printed as many times as the number of comments attached to each post.

I would rather recommend you running different SELECT query for comments separately.

Answer 2

首先，我建议您检查UPDATE和COMMENT的顺序是否正确。不要去设计。只需查看订单。保留y0ur文件的备份。而且，有耐心并试试这个。并且，在$stmth= $this->$db->prepare($sql2);的函数$db中检查此行的语法。（这是否正确。）

<?php
include "includes/dbconfig.inc.php";
$status_replies="";
$status_list="";
$statusui_edit="";
$isowner="";
$is_friend="";
$friends = array();
$stmt=  $conn->prepare("select friend_one, friend_two from friends where (friend_one=:session OR friend_two=:session) and accepted='1'");
$stmt->bindparam(":session",$_SESSION['uname']);
$stmt->execute();

foreach ($stmt->fetchAll(PDO::FETCH_ASSOC) as $i=> $r ) {
    $r["friend_one"] == $_SESSION['uname'] ? $friends[]= $r["friend_two"] : $friends[] = $r["friend_one"]; 
    $friend=$friends[$i];

    //fetch update_id from update table in db and inject it to the feed query.
    $totalUpdates=$project->totalUpdates($_SESSION['uname']);   
    foreach ($totalUpdates as $updates)
    {
        $updateid=$updates['update_id'];
        $updatebody=$updates['update_body'];
        $updatetitle=$updates['title'];
        echo $updatetitle."<br>".$updatebody."<br>";

        // Fetch Comments of update
        $totalComments=$project->totalComments($_SESSION['uname'],$friend,$updateid);   
        foreach($totalComments as $comments)
        {
            echo $comments['comment_body']."<br>";
        }
        echo "<textarea rows='4' placeholder='Comments'></textarea>";
    }

}

创建这两个函数

public function totalComments($session,$friend,$updateid) {
    $sql2="SELECT * FROM comment_update WHERE os_id=:updateid AND (account_name = :session or u.account_name=:friend) AND (type = 'a' or 'c')";
    $stmth=  $this->$db->prepare($sql2); //Check here syntax of $db 
    $stmth->bindValue(":session",$session);
        $stmth->bindValue(":friend",$friend);
        $stmth->bindValue(":updateid",$updateid);
    $stmth->execute();
    return $stmth->fetchAll(PDO::FETCH_ASSOC);
}
public function totalUpdates($session) {
    $sql2="SELECT * FROM updates WHERE account_name=:session";
    $stmth=  $this->$db->prepare($sql2);//Check here syntax of $db 
    $stmth->bindValue(":session",$session);
    $stmth->execute();
    return $stmth->fetchAll(PDO::FETCH_ASSOC);
}

how to append comment values to respective posts in php

2 个答案: