I've got the following code which queries a table. Then it uses the result to make another query. That result is then used to make a third query.
But how do I grab the userid field from the 2nd query in order to grab a name from a users table and join that to the result of the 3rd query?
Please note once I figure out the code I will convert this to a prepared statement. It's just easier for me to work with legacy code when figuring out queries.
$selectaudioid = "SELECT audioid FROM subscribe WHERE userid = $userid";
$audioResult=$dblink->query($selectaudioid);
if ($audioResult->num_rows>0) {
while ($row = $audioResult->fetch_assoc()) {
$newaudio = $row[audioid];
$getallaudio = "SELECT opid, userid from audioposts WHERE audioid = $newaudio" ;
$getallresult = $dblink->query($getallaudio);
if ($getallresult->num_rows>0) {
while ($row = $getallresult->fetch_assoc()) {
$opid = $row[opid];
$opuserid = $row[userid];
$getreplies =
"SELECT * from audioposts ap WHERE opid = $opid AND opid
NOT IN (SELECT opid FROM audioposts WHERE audioposts.opid = '0' )";
$getreplyresults = $dblink->query($getreplies);
if ($getreplyresults->num_rows>0) {
while ($row = $getreplyresults->fetch_assoc()) {
$dbdata[]=$row;
}
}
}
}
}
} "SELECT * from audioposts ap WHERE opid = $opid AND opid
NOT IN (SELECT opid FROM audioposts WHERE audioposts.opid = '0' )";
$getreplyresults = $dblink->query($getreplies);
if ($getreplyresults->num_rows>0) {
while ($row = $getreplyresults->fetch_assoc()) {
$dbdata[]=$row;
}
}
}
}
}
}
echo json_encode($dbdata);
The result I need are rows of json encoded instances of $getreplyresults with the $row[userid] from the original result joined to each row.
Here's what I did in the end. Now I just have to figure out how to convert this to a prepared statement in order to avoid malicious injection.
$selectaudioid = "SELECT audioid FROM subscribe WHERE userid = $userid";
$audioResult=$dblink->query($selectaudioid);
if ($audioResult->num_rows>0) {
while ($row = $audioResult->fetch_assoc()) {
$newaudio = $row[audioid];
$getallaudio = "
SELECT ap.audioid, ap.title, us.name FROM audioposts ap
INNER JOIN audioposts a2 ON a2.audioid = ap.opid
INNER JOIN users us ON us.id = a2.userid
WHERE ap.opid = $newaudio AND ap.opid <> '0'
";
$getallresult = $dblink->query($getallaudio);
if ($getallresult->num_rows>0) {
while ($row = $getallresult->fetch_assoc()) {
$dbdata[]=$row;
}}}}
I created a SELECT to get my communities.
And create two SELECTs to get the communities I'm following.
But I get just my communities.
I do not get the communities I'm following.
$user_id = $_GET["id"];
$row1 = array();
$row2 = array();
// get my communities
$res1 = mysql_query("SELECT * FROM communities where user_id = '$user_id'");
while($r1 = mysql_fetch_assoc($res1)) {
$row1[] = $r1;
}
// get "id" of my communities I'm following
$res = mysql_query("SELECT * FROM communities_follow where user_id = '$user_id'");
while($r = mysql_fetch_assoc($res)) {
$coid = $r["coid"];
// get my communities I'm following
$res2 = mysql_query("SELECT * FROM communities where id = '$coid'");
while($r2 = mysql_fetch_assoc($res2)) {
$row2[] = $r2;
}
}
$resp = array_replace_recursive($row1, $row2);
print json_encode( $resp );
The inner join will get you those communities only, where you are following:
SELECT c.* FROM communities c
INNER JOIN communities_follow cf ON c.id = cf.coid
WHERE cf.user_id = '$user_id';
Or, without a JOIN:
SELECT * FROM communities
WHERE EXISTS (SELECT 1 FROM communities_follow cf
WHERE c.id = cf.coid AND cf.user_id = '$user_id')
Try this sql.
SELECT * FROM communities c LEFT JOIN communities_follow cf ON c.user_id = cf.user_id where
cf.user_id = '$user_id';
1- I'm building a comparison app which compares the relationship between two users.
If the user A and user B has the same country address then it will print alert to any of the same similar values.
2- There is another issue which is some users has multiple addresses for example user A has address x1 and user b has address x1 and address x2, in this scenario how do I compare user A's address with the multiple addresses with user B and alert that the address x1 is matched between the two users?
here is the queries for both users
$query1 = "
SELECT
a.PID, a.`Name`, a.Avatar, a.Email,
b.City, a.LDate, b.Country, b.MPhone,
b.Gender, b.Birthday
FROM
`Profile` AS a
LEFT JOIN Details AS b ON a.PID = b.PID
WHERE
a.PID = '1'
";
$UserInfo1 = mysqli_query($mysqli, $query1);
while( $row = mysqli_fetch_array($UserInfo1) ){
$Avatar1 = "{$row['Avatar']}";
$Name1 = "{$row['Name']}";
$Email1 = "{$row['Email']}";
$Country1 = "{$row['Country']}</td>";
$MPhone1 = "{$row['MPhone']}</td>";
$Gender1 = "{$row['Gender']}</td>";
$City1 = "{$row['City']}</td>";
$Birthday1 = "{$row['Birthday']}</td>";
}
$query2 = "
SELECT
a.PID, a.`Name`, a.Avatar, a.Email,
b.City, a.LDate, b.Country, b.MPhone,
b.Gender, b.Birthday
FROM
`Profile` AS a
LEFT JOIN Details AS b ON a.PID = b.PID
WHERE
a.PID = '2'
";
$UserInfo2 = mysqli_query($mysqli, $query2);
while( $row = mysqli_fetch_array($UserInfo2) ){
$Avatar2 = "{$row['Avatar']}";
$Name2 = "{$row['Name']}";
$Email2 = "{$row['Email']}";
$Country2 = "{$row['Country']}</td>";
$MPhone2 = "{$row['MPhone']}</td>";
$Gender2 = "{$row['Gender']}</td>";
$City2 = "{$row['City']}</td>";
$Birthday2 = "{$row['Birthday']}</td>";
}
3- The final results is that I want to make flowchart and point the matched information to each other something like this screenshot:
What would be the best and simplest way to make this comparison in php or Mysql?
Your help is highly needed and appreciated.
if user select anything besides "all" it will lead to a where statement involving KodDaerah
$where = '';
$sql= "SELECT * FROM maklumatakaun
LEFT JOIN detailakaun ON maklumatakaun.id = detailakaun.id
LEFT JOIN maklumatbilakaun ON maklumatakaun.NoAkaun = maklumatbilakaun.NoAkaun
LEFT JOIN kodjenisakaun ON detailakaun.KodJenisAkaun = kodjenisakaun.KodJenisAkaun
LEFT JOIN kodlokasi ON detailakaun.KodLokasi = kodlokasi.KodLokasi
LEFT JOIN kodkategori ON maklumatakaun.KodKategori = kodkategori.KodKategori
LEFT JOIN koddaerah ON maklumatakaun.KodDaerah = koddaerah.KodDaerah
WHERE maklumatakaun.KodKategori = '$KodKategori'
AND detailakaun.KodJenisAkaun = '$KodJenisAkaun'
AND maklumatbilakaun.BulanBil = '$BulanBil'
AND maklumatbilakaun.TahunBil ='$TahunBil'
".mysql_real_escape_string($where)."
ORDER BY koddaerah.NamaDaerah ";
if($KodDaerah != "all"){
$where = "AND maklumatakaun.KodDaerah = '$KodDaerah' "; //Add your where statement here
//Whatever you want to do
}
else {
$where = "";
}
if user select all then the system will just use the current sql statement that i provided, for now im not sure what's wrong, so here is where user select the KodDaerah from drop down list box
<?php include('dbase.php');
$sql = "SELECT KodDaerah, NamaDaerah FROM koddaerah";
$result = mysql_query($sql);
echo "<select name='KodDaerah' id='KodDaerah' class='input_field' required />
<option>Pilih Daerah</option>
<option value='all'>Seluruh Pahang</option>";
while ($kod = mysql_fetch_array ($result)){
echo "<option value=".$kod['KodDaerah'].">" .$kod['NamaDaerah']."</option>
<option value='all'>Seluruh Pahang</option>";
}
echo "<?select>";
?>
The problem is now even when i select a certain KodDaerah, it will just run the provided sql query without using the WHERE statement in the $where. Can anybody help?
EDIT:
$sql = $sql . $where;
$result = mysql_query ($sql);
$BilAkaun = mysql_num_rows ($result);
try to move up the if statement:, remove mysql_real_escape_string
(escape before)
$where = '';
if($KodDaerah != "all"){
$where = "AND maklumatakaun.KodDaerah = '$KodDaerah' "; //Add your where statement here
//Whatever you want to do
}
else {
$where = "";
}
$sql= "SELECT * FROM maklumatakaun
LEFT JOIN detailakaun ON maklumatakaun.id = detailakaun.id
LEFT JOIN maklumatbilakaun ON maklumatakaun.NoAkaun = maklumatbilakaun.NoAkaun
LEFT JOIN kodjenisakaun ON detailakaun.KodJenisAkaun = kodjenisakaun.KodJenisAkaun
LEFT JOIN kodlokasi ON detailakaun.KodLokasi = kodlokasi.KodLokasi
LEFT JOIN kodkategori ON maklumatakaun.KodKategori = kodkategori.KodKategori
LEFT JOIN koddaerah ON maklumatakaun.KodDaerah = koddaerah.KodDaerah
WHERE maklumatakaun.KodKategori = '$KodKategori'
AND detailakaun.KodJenisAkaun = '$KodJenisAkaun'
AND maklumatbilakaun.BulanBil = '$BulanBil'
AND maklumatbilakaun.TahunBil ='$TahunBil'
".$where."
ORDER BY koddaerah.NamaDaerah ";
and then do not append $where again
$result = mysql_query ($sql);
$BilAkaun = mysql_num_rows ($result);
I am trying to refactor this code a bit. Originally I had two different models, both extending MY_Model. However, most of the code was repetitive so now I am having First_model extend MY_Model and Second_model extends First_model. I cleaned up most of code from Second_model that it inherits from First_model, but I have several methods within Second_model that are only slightly different from the same method in First_model. Consider the following code:
First_model
class First_model extends MY_Model
{
private function getPostsByPostIDs($postIDs)
{
$postIDs = $this->strictCastIntArray($postIDs);
$postIDSqlArray = implode(",", $postIDs);
$year = date('Y');
$month = date('n');
$sql = "SELECT
post.id,
post.useraccount_id,
user.first_name user_first_name,
user.last_name user_last_name,
user.gender user_gender,
user.profile_pic user_profile_pic,
post.class_id,
post.school_id school_id,
school.display_name school_name,
school.state,
school.city,
post.karma_awarded_id,
post.is_parent_post,
post.reply_to_post_id,
post.comment_text,
post.image_url,
post.ts_created,
UNIX_TIMESTAMP(post.ts_created) post_timestamp,
post.ts_modified,
user.facebook_uid user_facebook_id,
user.id user_id,
sum(ka.karma) monthly_karma
FROM
WallPosts post
JOIN UserAccounts account ON (account.id = post.useraccount_id)
JOIN Users user ON (user.id = account.user_id)
LEFT JOIN Schools school ON (post.school_id = school.id)
LEFT JOIN KarmaAwarded ka ON (ka.user_id IN (SELECT
IFNULL(u_all.id, user.id)
FROM UserAccounts ua
INNER join Users u ON u.id = ua.user_id
LEFT join Users u_all ON u_all.facebook_uid = u.facebook_uid
WHERE ua.id = post.useraccount_id)
AND YEAR(ka.ts_created) = {$year}
AND MONTH(ka.ts_created) = {$month})
WHERE
post.id IN ({$postIDSqlArray})
GROUP BY post.id";
$query = $this->db->query($sql);
$queryResults = $query->result_array();
$functionResults = array();
foreach ($queryResults as $row) {
$functionResults[$row["id"]] = $row;
}
return $functionResults;
}
}
Second_model
class Second_model extends First_model
{
private function getPostsByPostIDs($postIDs)
{
$postIDs = $this->strictCastIntArray($postIDs);
$postIDSqlArray = implode(",", $postIDs);
$year = date("Y");
$month = date("n");
$sql = "SELECT
post.id,
post.useraccount_id,
user.first_name user_first_name,
user.last_name user_last_name,
user.gender user_gender,
user.profile_pic user_profile_pic,
post.class_id,
post.school_id school_id,
school.display_name school_name,
school.state,
school.city,
post.karma_awarded_id,
post.is_parent_post,
post.reply_to_post_id,
post.comment_text,
post.image_url,
UNIX_TIMESTAMP(post.ts_created) ts_created,
post.ts_modified,
user.facebook_uid user_facebook_id,
user.id user_id,
SUM(ka.karma) monthly_karma,
post.answer_status_flags
FROM
WallPosts post
JOIN UserAccounts account ON (account.id = post.useraccount_id)
JOIN Users user ON (user.id = account.user_id)
LEFT JOIN Schools school ON (post.school_id = school.id)
LEFT JOIN KarmaAwarded ka ON (ka.user_id IN (
SELECT
IFNULL(u_all.id, user.id)
FROM
UserAccounts ua
INNER JOIN Users u ON (u.id = ua.user_id)
LEFT OUTER JOIN Users u_all ON (u_all.facebook_uid = u.facebook_uid)
WHERE ua.id = post.useraccount_id)
AND YEAR(ka.ts_created) = {$year} AND MONTH(ka.ts_created) = {$month})
WHERE
post.id IN ({$postIDSqlArray})
GROUP BY post.id";
$query = $this->db->query($sql);
$queryResults = $query->result_array();
$functionResults = array();
foreach ($queryResults as $row) {
$functionResults[$row['id']] = $row;
}
return $functionResults;
}
}
Notice the only thing different is the query in the $sql variable. I am wondering can I somehow make the method in the first model protected and only change the query in the second? Or is there a more efficient way to trim down this code? I have several methods this same thing applies to and it seems a bit much to keep redefining the methods in the new Class.
I would think about pass the $sql as a variable in your models:
In your First Model you would have:
private $sqlPostId = '';
public function __construct() {
$this->sqlPostId = "SELECT
post.id,
post.useraccount_id,
user.first_name user_first_name,
user.last_name user_last_name,
user.gender user_gender,
user.profile_pic user_profile_pic,
post.class_id,
post.school_id school_id,
school.display_name school_name,
school.state,
school.city,
post.karma_awarded_id,
post.is_parent_post,
post.reply_to_post_id,
post.comment_text,
post.image_url,
post.ts_created,
UNIX_TIMESTAMP(post.ts_created) post_timestamp,
post.ts_modified,
user.facebook_uid user_facebook_id,
user.id user_id,
sum(ka.karma) monthly_karma
FROM
WallPosts post
JOIN UserAccounts account ON (account.id = post.useraccount_id)
JOIN Users user ON (user.id = account.user_id)
LEFT JOIN Schools school ON (post.school_id = school.id)
LEFT JOIN KarmaAwarded ka ON (ka.user_id IN (SELECT
IFNULL(u_all.id, user.id)
FROM UserAccounts ua
INNER join Users u ON u.id = ua.user_id
LEFT join Users u_all ON u_all.facebook_uid = u.facebook_uid
WHERE ua.id = post.useraccount_id)
AND YEAR(ka.ts_created) = {$year}
AND MONTH(ka.ts_created) = {$month})
WHERE
post.id IN ({$postIDSqlArray})
GROUP BY post.id";
}
private function getPostsByPostIDs($postIDs)
{
$postIDs = $this->strictCastIntArray($postIDs);
$postIDSqlArray = implode(",", $postIDs);
$year = date('Y');
$month = date('n');
// Here you use the defined variable in the constructor
$query = $this->db->query($this->sqlPostId);
$queryResults = $query->result_array();
$functionResults = array();
foreach ($queryResults as $row) {
$functionResults[$row["id"]] = $row;
}
return $functionResults;
}
And then you just have to change the SQL in the construct function in your second Model and go.