PHP - Adding In While Loop

I am trying to get info from a table, add rows in that table, and put the added value back into the table in another field...I want to add field1 and field2 of every row and put the total in the total row.
Heres what the echo gives me

Susan 14

Mary 18

Bob 13

Sam 21

heres the database
mysql> SELECT total_val FROM table;

+-----------+
| total_val |
+-----------+
|        21 |
|        21 |
|        21 |
|        21 |
+-----------+



heres the code....


<?php

require("connection.php");


mysql_select_db("database", $connection);
echo "<br />";

$result = mysql_query("SELECT * FROM table");

while($row = mysql_fetch_array($result))
  {
   
     $values = ($row['field1'] + $row['field2']);
    
    
   
   
   $sql=mysql_query("UPDATE table SET total = '$values'");
   
      
  echo $row['user_name'] . " " . $values;
  echo "<br />";
   
  }

?>

also note that if I put a INT in place of $values - the echo changes to match...why??

PLEASE help...I have been working on this for 2 entire days....

Hi I have currently written some code which uses of the Twitter API and extracts the information required to display my most current tweet on my website. This is all working perfectly but at the minute it is only displaying one tweet and I would like it to display as many as the variable $limit is set to.

I have tried numerous count with while loops but just cannot seem to get my head around the logic of it.

Here is the code im currently using which displays one tweet.


            <?php

$username = "my_twitter_username";
$limit = "2";
$twitter_url = "http://twitter.com/statuses/user_timeline/$username.xml?count=$limit";

$buffer = file_get_contents($twitter_url);
$xml = new SimpleXMLElement($buffer);

$status_item = $xml -> status;
$status_id = $xml -> status -> id;
$user_item = $xml -> status -> user;
$user_id = $xml -> status -> user -> screen_name;
$description =  $status_item -> text;
$status_time =  $status_item -> created_at;
$status_img = $user_item -> profile_image_url;

$description = preg_replace("#(^|[\n ])([\w]+?://[\w]+[^ \"\n\r\t< ]*)#", "\\1<a href=\"\\2\" target=\"_blank\">\\2</a>", $description);
        $description = preg_replace("#(^|[\n ])((www|ftp)\.[^ \"\t\n\r< ]*)#", "\\1<a href=\"http://\\2\" target=\"_blank\">\\2</a>", $description);
        $description = preg_replace("/@(\w+)/", "<a href=\"http://www.twitter.com/\\1\" target=\"_blank\">@\\1</a>", $description);
        $description = preg_replace("/#(\w+)/", "<a href=\"http://search.twitter.com/search?q=%23\\1\" target=\"_blank\">#\\1</a>", $description);

echo "
<div class='tweet-wrapper'>
<div class='tweet-img'>
<a href='http://www.twitter.com/la__academia' target='_BLANK'><img src='$status_img' alt='La Academia Twitter' style='width:30px height:30px;' /></a>
</div><!-- tweet-img -->
<div class='tweet-text'>
<p class='tweet-p'>$description</p>
<p class='tweet-time'>$status_time . <a href='http://twitter.com/?status=@$user_id%20&in_reply_to_status_id=$status_id&in_reply_to=$user_id' target='_BLANK' class='tweet-reply'>Reply</a></p>
</div><!-- tweet-text -->
<div class='cleaner'></div>
</div><!-- tweet-wrapper -->
";

?>

Thanks for any help.

Hope someone can help, I am trying to add up all the values of a variable in a PHP while loop and have tried several approaches but none seem to work. Hopefully someone can point out what the correct method is.

I've set up some code to pull the pay rate from a MySQL table, and then calculate that person's earnings based on the amount of time they spend on a particular job. That works fine:

           while ($row = $getrate->fetch_assoc()) {

              $staffrate = $row["Rate"];

              $earnings = ($staffrate/3600) * $jobeventtimeseconds;

              $earningsformatted = number_format($earnings, 2);

           }

However there may be a number of jobs for different people with different rates, so I want to add all of these up and output the total. So for example if I had values of 125.00, 35.50 and 22.75 I want to show 183.25 as the total.

So I tried a few things I found on forums on the subject:

$totalearnings = 0;

foreach($earningsformatted as $key => $value) {

   $totalearnings += $value;

}

echo $totalearnings;

That didn't work so I tried another method that someone suggested:

$total=array($earningsformatted);

echo array_sum($total);

The 2nd method outputted just the last individual value, the 1st method didn't work at all. Does anyone have a working method that can be used to do this?

Thanks

mysql_query("update pupils set record='running' where pid !='$testing[0]' 

Hi all,

I'm trying to write a function to return an array. But it keeps returning an empty array with NULL values ....

This is my code.


   function ShowUserData ($uid)
   {
      $con = mysql_connect("localhost","user","pass");
      if (!$con)
       {
          die('Oops !! something went wrong with the DB connection, Server said ' . mysql_error());
      }

      mysql_select_db("db", $con);
      
      $password = md5($password);
      
      $query = mysql_query("SELECT * FROM `table` WHERE `uid` = '".$uid."'");
      $num = mysql_num_rows($query);
      
      while ($row = mysql_fetch_array($query, MYSQL_NUM)) {
          $outArray = array('uid' =>$row['uid'], 'email' => $row['email'], 'name' => $row['name']); 
      }
      return $outArray;      
   }

what am i doing wrong?

Hi

I have an array of items that I am currently displaying a foreach loop

What I'm looking to do, is add a string, to all of items, a part from the last 4:


foreach ($pager->getResults() as $items => $item)
{
echo $item->getName(); 
//need to add a string to this for the all but the last 4
}


Thanks

Here is my dilemma and thank you in advance!

I am trying to create a variable variable or something of the sort for a dynamic associative array and having a hell of a time figuring out how to do this. I am creating a file explorer so I am using the directories as the keys in the array.

Example:
I need to get this so I can assign it values

$dir_list['root']['folder1']['folder2'] = value;

so I was thinking of doing something along these lines...

if ( $handle2 = @opendir( $theDir.'/'.$file ))
{
    $tmp_dir_url = explode($theDir);
    for ( $k = 1; $k < sizeof ( $tmp_dir_url ); $k++ )
    {
        $dir_list [ $dir_array [ sizeof ( $dir_array ) - 1 ] ][$tmp_dir_url[$k]]
    }

this is where I get stuck, I need to dynamically append a new dimension to the array durring each iteration through the for loop...but i have NO CLUE how

When a post is approved I only want

$details = $_POST['newstitle'];
update_user_actions(8, $details);

Being posted once with the corresponding news article title.
Any way to achieve this?

Right now it is looping through all of the titles and is posting them all.

Code: [Select]
foreach($posts as $post)
{
$displayName = ucwords("${post['firstname']} ${post['lastname']}");

if (isset($_POST['approve']))
{
if(is_array($_POST['approve'])) {
$keys = array_keys($_POST['approve']);
$id = $keys[0];

                                $details = $_POST['newstitle'];
        update_user_actions(8, $details);

$sql = "UPDATE `news` SET `newsdate` = NOW(), `approved` = 1 WHERE `id` = '$id'";
header("Location: " . $_SERVER['PHP_SELF'] . "?" . $_SERVER['QUERY_STRING'] );
}
}
else if (isset($_POST['deny']))
{
if(is_array($_POST['deny'])) {
$keys = array_keys($_POST['deny']);
$id = $keys[0];

$sql = "UPDATE `news` SET `newsdate` = NOW(), `approved` = -1 WHERE `id` = '$id'";
header("Location: " . $_SERVER['PHP_SELF'] . "?" . $_SERVER['QUERY_STRING'] );
}
}
else if (isset($_POST['delete']))
{
if(is_array($_POST['delete'])) {
$keys = array_keys($_POST['delete']);
$id = $keys[0];

$sql = "DELETE FROM `news` WHERE `id` = '$id'";
header("Location: " . $_SERVER['PHP_SELF'] . "?" . $_SERVER['QUERY_STRING'] );
}
}
if(isset($sql) && !empty($sql)) {
mysql_query($sql) or die(mysql_error());
}

?>

Hi iam currently writing some code for my website and i have a number of records that i simply want to display in a table format, i have done this in a while loop and it works well, however i only want to display a maximum of 10 records per page as my div needs to be a fixed height and was wondering how i could include a next button that would act as like a page number. The thing is at any given point there could be from 1 record to display to 500, so i need a way of allowing the user to quickly navigate to the other records. How can i do this without using mulitple pages.

Hope this makes sense.

Heres my code

Code: [Select]
<?php echo"<table width='100%' border='1' align='center'><tr><th>Referal Name</th><th>Amount Received</tr>";
while ($row = mysql_fetch_array($sql_info))
{
extract($row);
echo "<tr><td align='center'>".$username."</td><td align='center'>".$cumulative_referral."</td></tr>";
}
echo "</table>";


?>
Thanks for your help

So i have an event page where it will show the next 3 events, then i need logged in users to click either of two buttons to say there attending or not attending.

i have the below code showing events, and the <form> and the submit and both buttons, but if i submit 1 button on event ID: 1 it inserts data into the database but for event ID: 2, and if i click the button on event ID :2 it also puts it into database with eventid:2

so no matter which event i click it seems to submit data with the latest event ID shown on page, and not for "each" event seperatly.

i have moved the submit query everywhere around and still same results or duplicate results if its in the loop.

i assume its looping the submit and only submitting the latests event ID.

 

<?php
if ($result = $con->query("SELECT * FROM events ORDER BY id ASC LIMIT 3")) {
if ($result->num_rows > 0) {
while ($row = $result->fetch_object()) {
$event_id = $row->id;
// set up table and echo data!
echo "<table border='1' cellpadding='2' width='50%'>";
echo "<tr><td>";
echo "<p><img src='images/raid_banners/" . $row->bannerimg . "'>" . $row->name . " (iLvl: " . $row->itemlevel . ")</p>";
echo "<p>Event Starts: " . $row->datestart . " - " . $row->timestart . "</p>";
echo "<p>Event Ends: " . $row->dateend . " - " . $row->timeend . "</p>";
echo "<p>Raid Lead: " . $row->raidlead . "</p>";
echo "<form action='' name='$event_id' method='post'>";
// Process and populate SELECT form element
echo "<select name=\"charname\">";
$sql = mysqli_query($con, "SELECT * FROM characters WHERE userid = $userid");
while ($row = $sql->fetch_assoc()){ echo "<option value=\"{$row['id']}\">{$row['charname']}</option>"; }
echo "</select>";
echo "<input type='hidden' name='raidid' value ='$event_id'>";
echo "<input type='hidden' name='action' value='submit' />";
echo "<input type=\"submit\" name=\"submit\" value=\"going\">";
echo "<input type=\"submit\" name=\"submit\" value=\"notgoing\">";
echo "</form></td></tr></table><br><br>"; 
 } 
 if(isset($_POST['action'])){
$charid = $_POST['charname'];
$submit = $_POST['submit'];
// Submit the data from dropdown in the form
mysqli_query($con,"INSERT INTO eventsignup (eventid, charid, userid, status) VALUES ('$event_id', '$charid', '$userid', '$submit')");  } 
}
else { echo "No results to display!"; } }
else { echo "Error: " . $con->error; }
$con->close();
?>

any help would be awesome. im tearing my hair out here.

Hi, I have some code which displays my blog post in a foreach loop, and I want to add some social sharing code(FB like button, share on Twitter etc.), but the problem is the way I have my code now, creates 3 instances of the sharing buttons, but if you like one post, all three are liked and any thing you do affects all of the blog post. How can I fix this?


<?php
include ("includes/includes.php");

$blogPosts = GetBlogPosts();

foreach ($blogPosts as $post)
{
echo "<div class='post'>";
echo "<h2>" . $post->title . "</h2>";
echo "<p class='postnote'>" . $post->post . "</p";
echo "<span class='footer'>Posted By: " . $post->author . "</span>";
echo "<span class='footer'>Posted On: " . $post->datePosted . "</span>";
echo "<span class='footer'>Tags: " . $post->tags . "</span>";
echo '
<div class="addthis_toolbox addthis_default_style ">
<a class="addthis_button_facebook_like" fb:like:layout="button_count"></a>
<a class="addthis_button_tweet"></a>
<a class="addthis_counter addthis_pill_style"></a>
</div>
<script type="text/javascript">var addthis_config = {"data_track_clickback":true};</script>
<script type="text/javascript" src="http://s7.addthis.com/js/250/addthis_widget.js#username=webguync"></script>';

echo "</div>";
}


?>

Hey.   So the issue I'm having is consecutive loops on semi-large arrays, over and over. Consider this array:

$firstArray = array(
'row1' => array(
'dates' => array(
'2014-01-01' => array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', 'key6' => 'value6', 'key7' => 'value7', 'key8' => 'value8', 'key9' => 'value9', 'key10' => 'value10'),
'2014-01-02' => array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', 'key6' => 'value6', 'key7' => 'value7', 'key8' => 'value8', 'key9' => 'value9', 'key10' => 'value10'),
'2014-01-03' => array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', 'key6' => 'value6', 'key7' => 'value7', 'key8' => 'value8', 'key9' => 'value9', 'key10' => 'value10'),
'2014-01-04' => array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', 'key6' => 'value6', 'key7' => 'value7', 'key8' => 'value8', 'key9' => 'value9', 'key10' => 'value10'),
'2014-01-05' => array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', 'key6' => 'value6', 'key7' => 'value7', 'key8' => 'value8', 'key9' => 'value9', 'key10' => 'value10'),
'2014-01-06' => array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', 'key6' => 'value6', 'key7' => 'value7', 'key8' => 'value8', 'key9' => 'value9', 'key10' => 'value10'),
'2014-01-07' => array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', 'key6' => 'value6', 'key7' => 'value7', 'key8' => 'value8', 'key9' => 'value9', 'key10' => 'value10'),
)
),
'row2' => array(
'dates' => array(
'2014-02-01' => array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', 'key6' => 'value6', 'key7' => 'value7', 'key8' => 'value8', 'key9' => 'value9', 'key10' => 'value10'),
'2014-02-02' => array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', 'key6' => 'value6', 'key7' => 'value7', 'key8' => 'value8', 'key9' => 'value9', 'key10' => 'value10'),
'2014-02-03' => array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', 'key6' => 'value6', 'key7' => 'value7', 'key8' => 'value8', 'key9' => 'value9', 'key10' => 'value10'),
'2014-02-04' => array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', 'key6' => 'value6', 'key7' => 'value7', 'key8' => 'value8', 'key9' => 'value9', 'key10' => 'value10'),
'2014-02-05' => array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', 'key6' => 'value6', 'key7' => 'value7', 'key8' => 'value8', 'key9' => 'value9', 'key10' => 'value10'),
'2014-02-06' => array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', 'key6' => 'value6', 'key7' => 'value7', 'key8' => 'value8', 'key9' => 'value9', 'key10' => 'value10'),
'2014-02-07' => array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', 'key6' => 'value6', 'key7' => 'value7', 'key8' => 'value8', 'key9' => 'value9', 'key10' => 'value10'),
'2014-02-08' => array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', 'key6' => 'value6', 'key7' => 'value7', 'key8' => 'value8', 'key9' => 'value9', 'key10' => 'value10'),
'2014-02-09' => array('key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3', 'key4' => 'value4', 'key5' => 'value5', 'key6' => 'value6', 'key7' => 'value7', 'key8' => 'value8', 'key9' => 'value9', 'key10' => 'value10'),
)
)
);

Originally the data comes from ~2-3 database tables, of course. But to ilustrate the point, this is how the main array looks like. This array usually contains anywhere between 10-50 rows, each row containing at least 10 dates, with 10 key/values each.   And after setting up all the data, it needs to be processed. Currently this is how a friend of mine did it..

$placeDataHere = array();
foreach($firstArray as $key => $dates) {
foreach($dates as $date => $values) {
foreach($values as $key => $value) {
$placeDataHere['DV_' . $date]['SM_' . $key] = 'KS_' . $value;
//Followed by another ~50-70 lines of processing the 3 loop's data..
...
...
....
....
....
....
....
....
}
}
}

Obviously this isn't good practise, but we can't seem to figure out a better way of doing it, since both the data and the loops are horribly nested.   This loop and setup of $firstArray is run anywhere between 10-20 times/request, due to amount of users we wish to process. So, the result is that this code can take up to over 2-3 minutes to complete, which isn't really optimal performance.   In short my question is, are there any better methods of handling this with the data setup we currently have?

Below is my output on the browser:

    Student: Kevin Smith (u0867587)
    Course: INFO101 - Bsc Information Communication Technology Course Mark 70 Grade
    Year: 3
   
   
    Module: CHI2550 - Modern Database Applications Module Mark: 41 Mark Percentage: 68 Grade: B
   
    Session: AAB Session Mark: 72 Session Weight Contribution 20%
   
    Session: AAE Session Mark: 67 Session Weight Contribution 40%


    Module: CHI2513 - Systems Strategy Module Mark: 31 Mark Percentage: 62 Grade: B
   
    Session: AAD Session Mark: 61 Session Weight Contribution 50%

Now where it says course mark above it says 70. This is incorrect as it should be 65 (The average between the module marks percentage should be 65 in the example above) but for some stange reason I can get the answer 65. I have a variable called $courseMark and that does the calculation. Now if the $courseMark is echo outside the where loop, then it will equal 65 but if it is put in while loop where I want the variable to be displayed, then it adds up to 70. Why does it do this.
   
    Below is the code:

Code: [Select]
    $sessionMark = 0;
    $sessionWeight = 0;
    $courseMark = 0;
   
    $output = "";
   
    $studentId = false;
    $courseId  = false;
    $moduleId  = false;
   
    while ($row = mysql_fetch_array($result))
    {
   
   
    $sessionMark += round($row['Mark'] / 100 * $row['SessionWeight']);
    $sessionWeight  += ($row['SessionWeight']);
        $courseMark = ($sessionMark /  $sessionWeight * 100);
   
          if($studentId != $row['StudentUsername'])
        {
   
            //Student has changed
            $studentId = $row['StudentUsername'];
   
            $output .= "<p><strong>Student:</strong> {$row['StudentForename']} {$row['StudentSurname']} ({$row['StudentUsername']})\n";
   
        }
             
        if($courseId != $row['CourseId'])
        {
   
            //Course has changed
            $courseId = $row['CourseId'];
   
            $output .= "<br><strong>Course:</strong> {$row['CourseId']} - {$row['CourseName']} <strong>Course Mark</strong>" round($courseMark) "<strong>Grade</strong>  <br><strong>Year:</strong> {$row['Year']}</p>\n";
   
        }
   
        if($moduleId != $row['ModuleId'])
        {
   
            //Module has changed
            if(isset($sessionsAry)) //Don't run function for first record
            {
   
                //Get output for last module and sessions
                $output .= outputModule($moduleId, $moduleName, $sessionsAry);
            }
   
            //Reset sessions data array and Set values for new module
   
            $sessionsAry = array();
            $moduleId    = $row['ModuleId'];
            $moduleName  = $row['ModuleName'];
        }
             
        //Add session data to array for current module
             
        $sessionsAry[] = array('SessionId'=>$row['SessionId'], 'Mark'=>$row['Mark'], 'SessionWeight'=>$row['SessionWeight']);
             
    }    //Get output for last module
   
    $output .= outputModule($moduleId, $moduleName, $sessionsAry);
   
    //Display the output
    echo $output;
I think the problem is that it is outputting the answer of the calculation only for the first session mark. How in the while loop can I do it so it doesn't display it for the first mark only but for all the session marks so that it ends up showing the correct answer 65 and not 72?

Hey guys,

Got another question im hoping someone can help me with.

I have a foreach loop (for use in a mysql query):

   foreach ($interests as $interest) {
       $query .= "($id, $interest), ";
   }

problem is i do not want the comma(,) in the last loop.

Is there some kinda of function i can use so it does not insert it on last loop?

Or should i just use a for loop with a nested if loop? something like ;

   for($i=0; $i < count($interests); $i++){
      $query .=
      "($id, '$interests[$i]')";
      if($i + 1 < count($interests)) {
         $query .= ", ";
      }
      }


Cheers guys

I am working to echo the results in a while or for loop... Both of my sample codes work, but the results are wrong!

The while loop ONLY echos a result IF the first record in the postings table matches the id passed (does not display a result unless the first record has a match)

The if loop displays ALL listings with the same name (counts them all) so there are no unique listings!


<?php

$posts_by_city_sql = "SELECT * FROM postings WHERE id='$_GET[id]'";
$posts_by_city_results = (mysqli_query($cxn, $posts_by_city_sql)) or die("Was not able to grab the Postings!");

/* While Loop  */
while($posts_by_city_row = mysqli_fetch_array($posts_by_city_results)) {
echo "<li><a href='posting_details.php?id=$posts_by_city_row[id]'>$posts_by_city_row[title]</a></li>";
}

/* For Loop  */
$posts_by_city_row = mysqli_fetch_array($posts_by_city_results);
 
for ($i=0; $i<sizeof($posts_by_city_row); $i++) {
echo "<li><a href='posting_details.php?id=$posts_by_city_row[id]'>$posts_by_city_row[title]</a></li>";
 }

?>

Results with for loop (there are 7 total unique book names, but it's just counting the first match on id 7 times like below):

AJAX for Beginners
AJAX for Beginners
AJAX for Beginners
AJAX for Beginners
AJAX for Beginners
AJAX for Beginners
AJAX for Beginners
AJAX for Beginners