PHP - For Each Loop On Common Value In Db

If I have three files such as the following, and put session_start() in each, the session cookie will be domain: "mydomain.com" and path "/".  As such, the session will be shared between all three files.

http://mydomain.com/index.php
http://mydomain.com/folder1/index.php
http://mydomain.com/folder1/folder2/index.php

If I want the cookie to be unique to each file, then it seems I have several options. I could use session_name() to give the cookie a unique name for each file. I could use session_set_cookie_params() to set a unique path for each (/, /folder1, /folder1/folder2), however, the index files in the children directories will also be sent the root directories session cookie, right?  Will this cause problems? Should both approaches be implemented? Or is there another approach? Thanks

This topic has been moved to MySQL Help.

http://www.phpfreaks.com/forums/index.php?topic=321735.0

Hi,    I have the following query 

SELECT 
user_details.User_club_ID, 
user_details.fname, 
user_details.lname, 
user_details.email, 
user_details.club_No 
club.CLUBCODE, 
club.club_id
FROM user_details, club
WHERE club_id = $cid AND user_details.club_No = club.CLUBCODE AND user_status = 'active'";

which I converted to a prepared statement as 

SELECT 
user_details.User_club_ID, 
user_details.fname, 
user_details.lname, 
user_details.email, 
user_details.club_No 
club.CLUBCODE, 
club.club_id
FROM user_details, club
WHERE club_id = ? AND user_details.club_No = club.CLUBCODE AND user_status = ?";

Please note that user_status is a field in the table user_details. The original query (non -PDO) works correctly.   I want to know if this is correct and that the comparison in the WHERE clause  i.e. user_details.club_No = club.CLUBCODE is security safe. If not then how should this be modified.   Also if there is a better way to write this statement, kindly show that as well.  Thanks    Thanks all !
Edited by ajoo, 11 December 2014 - 02:35 AM.

I'm showcasing user avatars and nicknames on the page, the mistake I did was I used session variables for that which are being set after login, now obviously those will be deleted as soon as the session is over.

So I thought of inserting the values into scalar variables instead of session variables. The problem I'm encountering is, how to make those variables available at the necessary spots on other pages?

Let's say I fetch data off the database after login inside login.php and I put the data into scalar variables, what would be common practice to make those scalar variables accessible in index.php?

Is this solution a good solution at all to make the avatar and nickname of the user permanent visible?

What would be common practice?

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?

Hello

I have a from that updates a few things in the db, and uses "<?php echo $PHP_SELF;?>".

The form does update everything fine, however that page does not reflect it. If I refresh the page manually
I can see the new values.

Is this a common thing, and can anything be done to fix this?

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

Good Evening -  I am in the process of trying to call back a list of categories and sub categories using a WHILE LOOP inside of a WHILE LOOP. It works on a different part of the site within the admin panel but not here. Here it only calls one sub category and moves on to the next parent category instead of finishing the loop and pulling all sub categories out...

// CATEGORIES

$query  = "SELECT * FROM cat";
$result = mysql_query($query);



while($row = mysql_fetch_array($result, MYSQL_ASSOC))
{

$catid = $row['id'];
$catname = $row['name'];

$output .= "<li class=\"level0 nav-2 parent\" onmouseover=\"toggleMenu(this,1)\" onmouseout=\"toggleMenu(this,0)\">
<a href=\"product.php?cat=$catid\">
<span>$catname</span>
</a>\n";


$querynav = "SELECT * FROM subcat WHERE pid = '$catid'";
$resultnav = mysql_query($querynav);

while($array = mysql_fetch_array($resultnav, MYSQL_ASSOC))
{

$subcatid = $row['id'];
$subcatname = $row['name'];

$output .= "<ul class=\"level0\">
<li class=\"level1 nav-2-1 first\">
<a href=\"product.php?cat=$catid&subid=$subcatid\">
<span>$subcatname</span>
</a>
</li>
</ul>
</li>";
}

}

Hi,

I am new to PHP. Can someone explain me clearly how to use while loop inside while loop to print "*" in square shape.

Thank you for your help.

Hi..
I have while loop inside while loop but I encountered problem in displaying data inside while loop or the second while loop.

here is my code:

Code: [Select]
<?php
  error_reporting(0);
$con = mysql_connect('localhost', 'root','');

if (!$con) {
    echo 'failed';
    die();
}

mysql_select_db("mes", $con);
?>
<script type="text/javascript">
function showDetails(pcode) {
 
 var clickElement = pcode.value;
 var click_id = pcode.id;
               
// var value_ =  document.getElementById(click_id).checked
 //    =  document.getElementById(clickElement).checked;   
 //var Table = (document.getElementsByName('list')[0].value);     
 
 var Table = document.getElementById('kanban_list');

 var rows = Table.rows;   
 
 var strSelect = document.getElementById(click_id).value;
 //alert(strSelect)
 
 for (var i = 0; i < rows.length; i++) {     
      var row = rows[i];     
    //row.style.display = (row.id.substr(0,3) == strSelect) ?      'none'         :          '';   
    //row.style.display = (row.id.substr(0,3) == strSelect) ?
   // row.style.display = 'none';
   // row.style.display = '';
   
    if (row.id.substr(0,3) == strSelect) {
        row.style.display = ((document.getElementById(click_id).checked) == false) ?  'none' : ''
    }
    //(document.getElementById(click_id).checked == false) ?  'none'               : '' : '';   
 
 } 
   
}

</script>
<?php
$sql = "SELECT kc.PCODE, kc.count_wip_chemical_weighing, kc.count_wip_compounding, kc.count_wip_extrusion, 
kc.count_wip_forming, kc.count_wip_deflashing, kc.kanban, kc.virtual, p.max_lot, p.min_lot FROM kanban_checker kc 
JOIN plan p ON kc.PCODE = p.PCODE ORDER BY p.PCODE";    
$result = mysql_query($sql, $con);       
?><label>Display Details:</label><input  onclick='showDetails(this);' id='chkDetail'   type='checkbox' checked='checked' value='wip'/>
<?php
echo "<table id='kanban_list'>";
echo "<tr>
        <th> PCODE </th>
        <th> LOT CODE </th>
        <th> CHEMICAL WEIGHING </th>
        <th> COMPOUNDING </th>
        <th> EXTRUSION </th>
        <th> FORMING </th>
        <th> DEFLASHING </th>
        <th> KANBAN </th>
        <th> VIRTUAL </th>
        <th> MAX LOT </th>
        <th> MIN LOT </th>
     </tr>";
while($row = mysql_fetch_assoc($result)){ 
    echo "<tr>
        <td>$row[PCODE]</td>
        <td>&nbsp;</td>
       <!-- <td>$row[LOT_CODE]</td>   -->
        <td>$row[count_wip_chemical_weighing]</td>
        <td>$row[count_wip_compounding]</td>
        <td>$row[count_wip_extrusion]</td>
        <td>$row[count_wip_forming]</td>
        <td>$row[count_wip_deflashing]</td>
        <td>$row[kanban]</td>
        <td>$row[virtual]</td>
        <td>$row[max_lot]</td>
        <td>$row[min_lot]</td>
        </tr>";     
$sql = "SELECT kd.LOT_CODE, kd.wip_chemicalweighing, kd.wip_compounding, kd.wip_extrusion, kd.wip_forming, kd.wip_deflashing 
FROM kanban_data kd JOIN plan p ON kd.PCODE = p.PCODE ORDER BY p.PCODE "; 
$result_kanban_data = mysql_query($sql, $con);   

while($row_data = mysql_fetch_assoc($result_kanban_data)){    
    echo "<tr id='wip'>
    <td></td>
    <td>&nbsp;$row_data[LOT_CODE]</td>
    <td>&nbsp;$row_data[wip_chemicalweighing]</td>
    <td>&nbsp;$row_data[wip_compounding]</td>
    <td>&nbsp;$row_data[wip_extrusion]</td>
    <td>&nbsp;$row_data[wip_forming]</td>
    <td>&nbsp;$row_data[wip_deflashing]</td>
    </tr>"; 
}       
}
echo "</table>";
     
?>
I attach the image of result from this code

But the output that I want is all LOT_CODE with P35 PCODE will only display below P35
and all LOTCODE with P35M PCODE will only display below P35M.

Thank you

I hope somebody can help me..

Code: [Select]
<?php 
$hierachy = new hierachy;
$iterator = new RecursiveIteratorIterator(new recursiveArrayIterator($hierachy->getLocalSubNodes($name1)));
try {
    foreach($iterator as $key=>$value)
        {
        echo $value = substr($value,0,-1).'<br />';
        }
    }
catch(Exception $e)
    {
    echo $e->getMessage();
    }?>

So I have a PHP parent page that is accesses that scans the database for the passed token in the URL and then replaces content on the template page using a loop. My issue is that I am trying to use a loop on the secondary page which causes the white screen of death. From what I can tell the loop inside a loop is causing the issue.
I'll paste the code below, let a newbie know if you have any ideas or can point me in the right direction.

Thanks everyone!


Here is the chunk of code from the parent page with the loop function....


// output pre content
eval("\$preContent = \"$preContent\";");
print_r( replaceChar($preContent) );

$sqlSearch = "SELECT * FROM ".$row[tdbd_name]." WHERE ".$sqlKeyword." LIMIT ".MAX_ROWS;
$resultSearch = mysql_query($sqlSearch);

while($displayrows = mysql_fetch_assoc($resultSearch)) {
   $display = replaceTokens($loopTemplate);
   $display = str_replace('\\', '[backslash]', $display);
   $display = str_replace('[%', '$displayrows[', $display);
   $display = addslashes(str_replace('%]', ']', $display));
   $display = replaceTokens($display);
   $display = changeCase($display);

   eval("\$display = \"$display\";");

   $display = stripslashes($display);
   $display = str_replace('[backslash]', '\\', $display);
   $display = replaceChar($display);

   print_r( $display );

}
// output post content


And here is the loop function from the page that the above code loops through replacing tokens in.



<?php
$mySQLServer = "xxxxxxxxx";
$mySQLUser = "xxxxxxxxxx";
$mySQLPass = "xxxxxxxx";
$mySQLDB = "xxxxxxxxxxxxx";
$SQLToday = date("m/d/y") . "<br />";
$SQLsevendays = mktime(0,0,0,date("n"),date("j")-7,date("Y"));
$SQLsevenname = (date("l", $SQLsevendays));
$SQLsevennumber = (date("jS", $SQLsevendays));
$dbhandle = mssql_connect($mySQLServer, $mySQLUser, $mySQLPass)
  or die("Couldn't connect to SQL Server on $myServer");
$selected = mssql_select_db($mySQLDB, $dbhandle)
  or die("Couldn't open database $myDB");
$query = "WEB_ApproveHistory @State='CA', @Days=5, @Records=8";
$data = mssql_query($query);
$result = array();

while ($row = mssql_fetch_object($data))
{
       $result[] = $row;
       $returnedresults = (97*($row->TotalApprovals)) ;
 }

$englishreturnedresults = number_format($returnedresults);
echo 'In just the last week since ' . $SQLsevenname . ' the ' . $SQLsevennumber . '  has delivered ';
echo $englishreturnedresults;
echo '  Here are just a few people ';

echo '<ul class="BulletCheck">';

mssql_next_result($data);


while ($row = mssql_fetch_object($data))
{
       $result[] = $row;
       echo '<li>' . '  ' . $row->FirstName  . ' From '. $row->City . ', ' . $row->State .' PreApproved On ' .$row->ApprovedDate . '</li>';
 }


mssql_close($dbhandle);
?>