Possible To Use Insert Query In Fetch Array - php

I am not sure why this hasn't been answered yet will not that I know of, I am wondering if it's possible to add a insert query with in a while loop I have tried,
but it keeps inserting the comment more then it should (say if it finds 4 status updates it will post the comment in the database 4 times)
I know I have the insert query twice this is not the problem as I had the query where it submits a comment to the database the current query is there for testing purposes.
<?php
require_once ("core/connection.php");
require_once ("core/group_functions.php");
//We need to post the message update in to the database
if(isset($mybb->input['post_message_submit'])) {
$post_message_submit = $mybb->input['post_message_submit'];
$post_message = $mybb->input['post_message'];
$comment_post = $mybb->input['comment_post'];
if(($post_message_submit) && ($post_message)) {
$insert_query = $db->query("INSERT INTO " . TABLE_PREFIX . "groups_posts" . "(posted_by, group_name, post_body)
VALUES ('$mybb_username', '$get_group_url' ,'$post_message')");
} else {
echo "<text style='color:red;'> You Must Specify A Message</a></text>";
}
}
echo "
<form action='' method='POST'>
<textarea name='post_message' id='post_message' placeholder='Whats Going On?'></textarea><br>
<input type='submit' name='post_message_submit' value='Post'>
</form>
";
$fetch_index_query = $db->query("SELECT post_id,posted_by,post_body,post_active,group_name FROM " . TABLE_PREFIX . "groups_posts WHERE group_name='$get_group_url'");
while($fetch_index_groups_array = $db->fetch_array($fetch_index_query)) {
$post_id_row = $fetch_index_groups_array['post_id'];
$posted_by = $fetch_index_groups_array['posted_by'];
$g_name = $_fetch_index_groups_array['g_name'];
$g_body = $fetch_index_groups_array['post_body'];
echo"<br>" . "<a href=''> $posted_by </a>" . "<br>" . $gname
. "<br>____________";
$fetch_comments_query = $db->query("SELECT g_name,post_body,comment_by FROM spud_groups_comments WHERE post_id='$post_id_row'");
while($fetch_groups_comments = $db->fetch_array($fetch_comments_query)) {
$post_body = $fetch_groups_comments['post_body'];
echo ("<br>" . $post_body);
}
$insert_query2 = $db->query("INSERT INTO " . TABLE_PREFIX . "groups_comments" . "(comment_by, post_id, post_body)
VALUES ('$mybb_username', '$post_id_row' ,'$comment_post')");
echo "<br>
<form action='' method='POST'>
<input type='text' name='comment_post' placeholder='Comment then Hit Enter'>
</form>
";
}
//We have done everything we need to do we can now exit and not execute anything beyond this point
exit();
?>

Try to instantiate other $DB object for the insert query. i.e. do not use the same one you are using to fetch the array, as the next use will overwrite the result of the first query that you are looping through.

Related

My php variable reverts back to original value after resetting its value in a foreach loop

I have a php page that interacts with a database. I am trying to display data from the database as options for a user to select. I am trying to record which option a user selects but the variable I use ($a_game_id) to record which button is clicked gets reverted back to its original value after submitting another form. I have tried declaring the variable as global within the loop and using session variables.
$a_game_id = 9;//starting value - it changes from 9 as desired, but reverts back when another form is submitted
$sql = "SELECT * FROM nbagames WHERE date = '" .$date ."'";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
global $a_game_id;
// output data of each row
$results = $conn->query($sql);
$resultset = array();
while($a_row = $results->fetch_assoc()){
$resultset[] = $a_row;
}
foreach ($resultset as $row){
echo "<form action='display_lines.php' method='POST'>
<br>" . $row["away"] . " " . $row['away_spread'] . "---TOTAL AVAILABLE: " . $away_sum_array[$row['game_id']].
" <input type='submit' value='Bet " . $row['away'] ."' name='" . $row['game_id']."A' />
at " . $row["home"] . " " . $row['home_spread'] . "---TOTAL AVAILABLE: " .$home_sum_array[$row['game_id']]. "
<input type='submit' value= 'Bet " . $row['home'] ."' name='" . $row['game_id']."H' /> " . $row['date'] . "
</form>
<br>";
///HERE $a_game_id has gets the desired value
if(isset($_POST[$row['game_id'].'H'])){
$a_game_id = intval($row['game_id']);
}else if(isset($_POST[$row['game_id'].'A'])){
$a_game_id = intval($row['game_id']);
}
}
} else {
echo "<br> 0 results";
}
$sql = "SELECT * FROM nbagames WHERE date = '" .$date ."'";
$result = $conn->query($sql);
while($row = $result->fetch_assoc()) {
if(isset($_POST[strval($row['game_id']).'H'])){
echo '<h3>'.$row['game_id'].'<br>';
echo $row['home'].' '.$row['home_spread'].'<br>';
$team = $row['home'];
$team_spread = $row['away_spread'];
echo '<form action="display_lines.php" method="post">
<input type="text" name="new_bet_amount" placeholder="Enter Bet Amount">
<input type="submit" name="new_bet_submit" value="Submit Bet">
</form></h3>';
}
else if(isset($_POST[strval($row['game_id']).'A'])){
echo '<h3>' .$row['game_id'].'<br>';
echo $row['away'].' '.$row['away_spread'].'<br>';
$team = $row['away'];
$team_spread = $row['away_spread'];
echo '<form action="display_lines.php" method="post">
<input type="text" name="new_bet_amount" placeholder="Enter Bet Amount">
<input type="submit" name="new_bet_submit" value="Submit Bet">
</form></h3>';
}
}
if(isset($_POST['new_bet_submit'])){
//HERE $a_game_id reverts back to its original value which is undesirable
$sql3 = "INSERT INTO placed_bets (user_id, game_id, bet_amount, game_date) VALUES ('".$_SESSION['id']."', '".$a_game_id."', '".$_POST['new_bet_amount']."', '".$date."')";
echo $a_game_id.'<br>';
if ($conn->query($sql3) === TRUE) {
echo "<br><h3>BET PLACED SUCCESSFULLY</h3><br>";
} else {
echo '<h3>Error placing bet<br>';
echo $conn->error;
echo '</h3>';
}
}
Thank you for taking a look
Do you mean "when I make another request all my global variables get reset?" If so, yes, that's how they work. Each request is completely independent of others. They do not share variables or other data. All you get is what's in $_SESSION, $_GET, $_POST and $_COOKIE.
If you need to persist between requests you must put that in the session, the database, or something persistent.
If you're used to code where the process persists and the variables stick, like in client-side situations, that's a mode of thinking you need to completely abandon.

PHP deleting variable after new form

In my code, I have two forms for users to select options. The first variable will save but as soon as the user submits the second form, the variable from the first form is no longer saved.
<div class = "school">
<h3>Please select the university you previously attended</h3>
<form action = "" method = "post" name = "school_form">
<select name="school" size ="10">
<?php
//shows options for $selected_school
$sql = "SELECT DISTINCT school FROM data;";
$result = mysqli_query($conn, $sql);
$resultCheck = mysqli_num_rows($result);
if ($resultCheck > 0){
while($row = mysqli_fetch_assoc($result)){
// inserts all data as array
echo "<option>". $row['school'] ."</option>";
}
}
?>
</select>
<br>
<input type ="submit" name = "submit_school" value = "Enter">
</form>
<?php
//saves selected option as $selected_school
if(isset($_POST['submit_school'])){
$selected_school = mysqli_real_escape_string($conn, $_POST['school']);
echo "You have selected: " .$selected_school;
}
?>
</div>
<div class ="courses">
<h3>Please select the courses you took</h3>
<form action = "" method ="post" name ="course_form">
<?php
//user shown options for courses
$sql2 = "SELECT transfer_course, transfer_title FROM data WHERE school = ? ORDER BY transfer_course ASC";
$stmt = mysqli_stmt_init($conn);
if(!mysqli_stmt_prepare($stmt, $sql2)) {
echo "SQL statement failed";
} else {
mysqli_stmt_bind_param($stmt, "s", $selected_school);
mysqli_stmt_execute($stmt);
$result2 = mysqli_stmt_get_result($stmt);
while($row2 = mysqli_fetch_assoc($result2)){
echo "<input type='checkbox' name ='boxes[]' value = '" . $row2['transfer_course'] . "' >" . $row2['transfer_course'] . "<br>";
}
}
?>
<br>
<input type ="submit" name = "submit_courses" value = "Enter">
</form>
<br>
<?php
//saved selected option(s) as $selected_course
if(isset($_POST['submit_courses'])){//to run PHP script on submit
if(!empty($_POST['boxes'])){
foreach($_POST['boxes'] as $selected_course){
echo "You have selected: " . $selected_course . "</br>";
}
}
}
?>
</div>
<div class = "output">
<h3>Course Equivalency</h3>
<?php
$sql3 = "SELECT arcadia_course, arcadia_title FROM data WHERE school = " . $selected_school . " AND transfer_course = " . $selected_course . "";
$result3 = mysqli_query($conn, $sql3);
if($result3)
{
while($row3 = mysqli_fetch_assoc($result3)){
echo $row3['arcadia_course'] . " " . $row3['arcadia_title'] . "<br>";
}
} else {
echo "failed";
echo $sql3;
}
?>
So by the time I get to my next sql statement
$sql3 = "SELECT arcadia_course, arcadia_title FROM data WHERE school = " . $selected_school . " AND transfer_course = " . $selected_course . "";
When the school is selected, it saves the variable, but when the course is selected, $selected_school becomes blank again.
I already have session_start() at the top of the page.
You can used session variable ,it will help to make data accessible across the various pages .
So,whenever form get submitted you can save that value in session and retrieve it anytime.In top of your php file you need to start session i.e session_start(); .Then in your code
<?php
//saves selected option as $selected_school
if(isset($_POST['submit_school'])){
$_SESSION['selected_school ']=$selected_school;// here you are storing value to session
$selected_school = mysqli_real_escape_string($conn, $_POST['school']);
echo "You have selected: " .$selected_school;
}
?>
Same you can do with your $selected_course also .Then you can passed value to your query like below :
$sql3 = "SELECT arcadia_course, arcadia_title FROM data WHERE school = " .$_SESSION['selected_school ']. " AND transfer_course = " .$_SESSION['selected_course']. "";
For more information refer here
It looks like your option doesn't have a value it is passing. Try this in your first form while loop:
echo '<option value="' . $row['school'] . '">' . $row['school'] . '</option>';
It looks like there may be some more issues you are having as well. If this doesn't fix your issue, I'll dig deeper.
EDIT: Then, yes, as others have suggested, you probably want to add a hidden input field to pass that variable value on the second form submit as well.
What we are saying about the hidden input field is this:
<input type="hidden" name="selected_school" value="<?php if(isset($selected_school) echo $selected_school; ?>">

PHP problem with insert into database in while loop

i try to write a website for library as an exercise. I have while loop to display all books in my database. If user is logged in and state(stan) of book(ksiazka) is free(Wolny) it shows button under book. After clicking it takes all free books to database and update their state as hired not only that one which user want. Here is the code, thanks.
$findbook2 ="select ksiazka.id_ksiazka, ksiazka.tytul, ksiazka.id_stan, autor.id_autor, autor.imie_autor, ksiazka.rok_wydania, autor.nazwisko_autor, stan.id_stan, stan.nazwa_stan FROM ((ksiazka inner join autor ON ksiazka.id_autor = autor.id_autor) inner join stan ON ksiazka.id_stan = stan.id_stan);";
$stan = mysqli_query($connect, $findbook2);
while($row = mysqli_fetch_array($stan))
{
echo "Tytuł:" . " " .$row['tytul']." ". "Autor:" . " " . $row['imie_autor']." ". $row['nazwisko_autor']. " ". "Rok wydania" . " ". $row['rok_wydania'] . " ". "Stan ". $row['nazwa_stan']. " ";
if(isset($_SESSION['id_czytelnik'])){
if($row['nazwa_stan']=='Wolny'){
echo '<form method = "GET" action = "ksiazki.php">';
echo '<input type = "submit" name = "submit" value = "Wypożycz"/>';
echo '</form>';
if(isset($_REQUEST['submit'])){
$id_czytelnik = $_SESSION['id_czytelnik'];
$id_ksiazka = $row['id_ksiazka'];
$data_oddania = date('Y-m-d', strtotime('+30 days'));
$wstaw_ksiazke = "INSERT INTO `wypozyczenie`(`id_wypozyczenie`, `id_czytelnik`, `id_ksiazka`, `id_pracownik`, `data_wypozyczenia`, `data_oddania`) VALUES ('','$id_czytelnik','$id_ksiazka',2,NOW(),'$data_oddania')";
if(mysqli_query($connect, $wstaw_ksiazke)){
$update = "Update ksiazka set id_stan = 3 where id_ksiazka = '$id_ksiazka'";
if(mysqli_query($connect, $update)){
echo "Wypozyczyłeś książkę";
}
}
}
}
}
echo "</br>";
}
Consider the statement if(isset($_REQUEST['submit'])) which is always true inside your while loop after clicking submit as it is not unset anyway.It causes repeated execution of a statement while the Array is not empty.

PHP Query Inserting Data Twice?

I am trying to make a feature for the Mybb system going to call it social groups, so far it's been great but when I try to insert a comment in the database it inserts it twice due to the msql_fetch_array and how it works (php should fix this)
Anyway how can I get the Posts id the user is commenting on and insert it only once in the database not twice
<?php
require_once ("core/connection.php");
require_once ("core/group_functions.php");
//We need to post the message update in to the database
if(isset($_POST['post_message_submit'])) {
$post_message_submit = $_POST['post_message_submit'];
$post_message = $_POST['post_message'];
if(($post_message_submit) && ($post_message)) {
$insert_query = $db->query("INSERT INTO " . TABLE_PREFIX . "groups_posts" . "(posted_by, group_name, post_body)
VALUES ('$mybb_username', '$get_group_url' ,'$post_message')");
} else {
echo "<text style='color:red;'> You Must Specify A Message</a></text>";
}
}
echo "
<form action='' method='POST'>
<textarea name='post_message' id='post_message' placeholder='Whats Going On?'></textarea><br>
<input type='submit' name='post_message_submit' value='Post'>
</form>
";
$fetch_index_query = $db->query("SELECT post_id,posted_by,post_body,post_active,group_name FROM " . TABLE_PREFIX . "groups_posts WHERE group_name='$get_group_url'");
while($fetch_index_groups_array = $db->fetch_array($fetch_index_query)) {
$post_id_row = $fetch_index_groups_array['post_id'];
$posted_by = $fetch_index_groups_array['posted_by'];
$g_name = $_fetch_index_groups_array['g_name'];
$g_body = $fetch_index_groups_array['post_body'];
echo("<br>" . "<a href=''> $posted_by </a>" . "<br>" . $gname
. "<br>____________
<br>
<form action='' method='POST'>
<input type='text' name='comment_post' placeholder='Comment then Hit Enter'>
</form>
"
);
$fetch_comments_query = $db->query("SELECT g_name,post_body,comment_by FROM spud_groups_comments WHERE post_id='$post_id_row'");
while($fetch_groups_comments = $db->fetch_array($fetch_comments_query)) {
$post_body = $fetch_groups_comments['post_body'];
echo ("<br>" . $post_body);
}
$insert_query = $db->query("INSERT INTO " . TABLE_PREFIX . "groups_posts" . "(posted_by, group_name, post_body)
VALUES ('$mybb_username', '$get_group_url' ,'$post_message')");
}
//We have done everything we need to do we can now exit and not execute anything beyond this point
exit();
?>
This software is going to be open source so you are really contributing to the feature by helping as I have never gone this advanced before.
Thanks!
because you are using insert query twice :)
<?php
require_once ("core/connection.php");
require_once ("core/group_functions.php");
//We need to post the message update in to the database
if(isset($_POST['post_message_submit'])) {
$post_message_submit = $_POST['post_message_submit'];
$post_message = $_POST['post_message'];
if(($post_message_submit) && ($post_message)) {
// $insert_query = $db->query("INSERT INTO " . TABLE_PREFIX . "groups_posts" . "(posted_by, group_name, post_body) VALUES ('$mybb_username', '$get_group_url' ,'$post_message')");
} else {
echo "<text style='color:red;'> You Must Specify A Message</a></text>";
}
}
echo "
<form action='' method='POST'>
<textarea name='post_message' id='post_message' placeholder='Whats Going On?'></textarea><br>
<input type='submit' name='post_message_submit' value='Post'>
</form>
";
$fetch_index_query = $db->query("SELECT post_id,posted_by,post_body,post_active,group_name FROM " . TABLE_PREFIX . "groups_posts WHERE group_name='$get_group_url'");
while($fetch_index_groups_array = $db->fetch_array($fetch_index_query)) {
$post_id_row = $fetch_index_groups_array['post_id'];
$posted_by = $fetch_index_groups_array['posted_by'];
$g_name = $_fetch_index_groups_array['g_name'];
$g_body = $fetch_index_groups_array['post_body'];
echo("<br>" . "<a href=''> $posted_by </a>" . "<br>" . $gname
. "<br>____________
<br>
<form action='' method='POST'>
<input type='text' name='comment_post' placeholder='Comment then Hit Enter'>
</form>
"
);
$fetch_comments_query = $db->query("SELECT g_name,post_body,comment_by FROM spud_groups_comments WHERE post_id='$post_id_row'");
while($fetch_groups_comments = $db->fetch_array($fetch_comments_query)) {
$post_body = $fetch_groups_comments['post_body'];
echo ("<br>" . $post_body);
}
$insert_query = $db->query("INSERT INTO " . TABLE_PREFIX . "groups_posts" . "(posted_by, group_name, post_body)
VALUES ('$mybb_username', '$get_group_url' ,'$post_message')");
}
//We have done everything we need to do we can now exit and not execute anything beyond this point
exit();
?>
Remove second insert query from code.

What is wrong with my SQL Insert code?

I'm struggling with trying to find out why this code isn't working for me. I have tables: albums (albumid, albumname), composers (composerid, composername) and tracks (trackid, tracktitle, albumid, composerid).
When I use my form to add a track and link it to a composer and an album from this:
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<p>Enter the new track:<br />
<textarea name="tracktitle" rows="1" cols="20"></textarea></p>
<p>Composer: <select name="cid" size="1">
<option selected value="">Select One</option>
<option value="">---------</option>
<?php while ($composer= mysql_fetch_array($composers)) {
$cid = $composer['composerid'];
$cname = htmlspecialchars($composer['composername']);
echo "<option value='$cid'>$cname</option>\n";} ?>
</select></p>
<p>Place in albums:<br />
<?php while ($alb = mysql_fetch_array($albs)) {
$aid = $alb['albumid'];
$aname = htmlspecialchars($alb['albumname']);
echo "<label><input type='checkbox' name='albs[]'
value='$aid' />$aname</label><br />\n";
} ?>
</p>
<input type="submit" value="SUBMIT" />
</form>
<?php endif; ?>
I get this message:
New track added
Error inserting track into album 2:
Track was added to 0 albums.
The php code that precedes the form is:
if (isset($_POST['tracktitle'])):
// A new track has been entered
// using the form.
$tracktitle = mysql_real_escape_string($tracktitle);
$cid= $_POST['cid'];
$tracktitle = $_POST['tracktitle'];
$albs = $_POST['albs'];
if ($cid == '') {
exit('<p>You must choose an composer for this track. Click
"Back" and try again.');}
$sql = "INSERT INTO tracks (tracktitle)
VALUES ('$tracktitle')" ;
if (#mysql_query($sql)) {
echo '<p>New track added</p>';
} else {
exit('<p>Error adding new track' . mysql_error() . '</p>
echo mysql_error() ');}
$trackid = mysql_insert_id();
if (isset($_POST['albs'])) {
$albs = $_POST['albs'];
} else {
$albs = array();
}
$numAlbs = 0;
foreach ($albs as $albID) {
$sql = "INSERT IGNORE INTO tracks (trackid, albumid,
composerid) VALUES " .
"($trackid, $albs, $cid)";
if ($ok) {
$numAlbs = $numAlbs + 1;
} else {
echo "<p>Error inserting track into album $albID: " .
mysql_error() . '</p>'; }}?>
<p>Track was added to <?php echo $numAlbs; ?> albums.</p>
<?php
else: // Allow the user to enter a new track
$composers = #mysql_query('SELECT composerid, composername
FROM composers');
if (!$composers) {
exit('<p>Unable to obtain composer list from the database.</p>');
}
$albs = #mysql_query('SELECT albumid, albumname FROM albums');
if (!$albs) {
exit('<p>Unable to obtain album list from the database.</p>');}?>
I keep searching for why this is failing and I keep hitting brick walls. I also know that at present it's not very secure which will be the next thing I sort out. I just want to get the actual function working first.
#paj: Change
if ($ok) {
to
if (mysql_query($sql)) {
-
I also suggest you update your SQL statements to
$sql = "INSERT INTO tracks (tracktitle) VALUES ('" . $tracktitle . "')";
$sql = "INSERT IGNORE INTO tracks (trackid, albumid, composerid) VALUES (" . $trackid . ", " . $albID . ", " . $cid . ")";
Looks to me like $ok doesn't exist except in the if ($ok) {
line. It needs to be defined somewhere prior, otherwise it will always read false because it doesn't exist.
Actually you can skip the $ok which doesn't exist and put in if (#mysql_query($sql)) { for that line like you have above. I do have to agree with the comments that the code needs some love, but if you want to know why it's breaking down, it appears this is why.

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