PHP - Get data from database then fetch it again - php

Question

I am trying to get data from database then fetch it again with different mysql_query using while() in both query , but the problem it is producing results more than one time because i used while in first query . So any answer to get all data without while() for first query ?
$AllFrnd = "SELECT friend , followers FROM frndlist WHERE userid = '".$_SESSION[' user_id ']."' ORDER BY id DESC";
$getfrnd = mysql_query($AllFrnd);
while($frnd = mysql_fetch_array($getfrnd)) {
$query2 = "SELECT * FROM post WHERE (userid ='".$frnd['friend']."') OR (userid = '".$frnd['followers']."') OR (userid = '".$_SESSION[' user_id ']."') ORDER BY id DESC";
$rs = mysql_query($query2);
while($row = mysql_fetch_array($rs)) {
echo ''.$row['content'].'';

Answer 1

you can try this :
// Associative array
$frnd =mysql_fetch_array($getfrnd,MYSQL_ASSOC);
then get your data as like :
echo $frnd ["friend"]
echo $frnd ["followers"]
And you should use mysqli_fetch_array instead of mysql_fetch_array
Hope it helps

Answer 2

You can use a query just like this :
SELECT *
FROM post
WHERE userid IN (
SELECT followers
FROM frndlist
WHERE userid = '" . $_SESSION['user_id'] . "'
)
OR userid IN (
SELECT friend
FROM frndlist
WHERE userid = '" . $_SESSION['user_id'] . "'
)
OR userid = '" . $_SESSION['user_id'] . "'
ORDER BY id DESC

Answer 3

You can easyly handle by using this function
function sel($table,$field="*", $condition="1",$sort="" ){
if($sort!='') $sort="order by $sort ";
//echo "select $field from $table where $condition $sort ";
$sel_query=mysql_query("select $field from $table where $condition $sort ");
//$sel_result=array();
while($temp_res=#mysql_fetch_array($sel_query))
{
$sel_result[]=$temp_res;
}
return isset($sel_result)?$sel_result: 0;
}
while($frnd = mysql_fetch_array($getfrnd)) {
$temp_res=sel("post","*"," (userid ='".$frnd['friend']."') OR (userid = '".$frnd['followers']."') OR (userid = '".$_SESSION[' user_id ']."') ORDER BY id DESC");
if($temp_res)foreach($temp_res as $row){
echo $row['content'];
}
}