PHP - Foreach Loop - Array Overwriting

hi, i’m currently facing a new problem (i managed to use array_unique function successfully but i face this problem)with my php loop. i couldn’t seem to increment in my foreach loop to get the value of an array.
here is my code:

$update_id1=Array ( [0] => 398 [1] => 397 [2] => 393 [3] => 391 [8] => );

//$i=0;
foreach ($update_id1 as $i => $v) {

     $ex= explode(",", $v);
     $unique=array_unique($ex);

//f$ketch username from update table in db and inject it to the feed query.
   $imp_id= implode(',', $ids);
//$id1=$ids[$i];
  // $x=0;
 // for($x=0;$x<count(unique);$x++){ 
   echo 'ids:- '.$i; print_r($unique[$i]); echo '<br>';
   
//}
   

            
$totalUpdates=$project->totalUpdates($ids[$i],$_SESSION['uname'] ,$unique[$i],$load);   

 //$i++;
 }

i tried every method nothing seems to work can anyone help me in this regard please.

Edited December 25, 2019 by narutofan

Hi.
I'm making a registration form, that will put each entered item into $_POST, which will then submit to the same page.
First, I need to has the password with this method:
Code: [Select]
<?php
public function hash_password($password) {
$result = hash(sha512, $password . SALT);
return $result;
}
>?then prepare the entered data for mysql with this method:
Code: [Select]
<?php
public function query_prep($value) {
$result = $this->real_escape_string($value);
if (!$result) {
die("Preparing query failed: " . $this->errno);
}
return $result;
}
?>
However, how can I "validate" the form.
I need to pass the now prepared $_POST array into a loop, that executes the prepare method on each item in the array and then puts it in an array again.
Also, how could I do some kind of function that checks if all required fields were filled, and how I can fail the submission if invalid characters were used.

Hi I am new this forum and looking for some much appreciated help with something that has me stumped.

I have extracted regions from image names in a directory.

example: 'edinburgh_castle_(Edinburgh).jpg' (Extracted Edinburgh from in-between the brackets)

So I have a list of Regions, extracted from all the various image names in the directory which I want to populate into a dynamic drop down menu for filtering purposes.

Here's my issue...

I want there to be only one 'Edinburgh' option appearing in my drop down menu. I don't want duplicates.
  Here is my code so far.
  php: [Select]

I have a database query set up that returns an array. I then cycle through the rows in a foreach statement that wraps each value in a <td> tag to output it to a table.

It works really great, but now I need to access two of the values and add some info to them. The first field returned is an image filename and I want to wrap it in an image tag that also concatenates the image path location to the value. All the images are stored in the same location, so basically I want to take the first value form the array and add the path to where the images are and wrap the whole thing in an <img> tag.

The other field I need to modify is the last value in the array which is actually an email address. For that field I want to make them an active email link so I need to wrap an <a>href=mailto: </a> tag around the value.

How could I modify this code so I could add the necessary tags to these elements of the array?

Here is the code I am running:
Code: [Select]
$query = "Select
                 member_image as 'Image',
                 member_name as 'Name',
                 city as 'City',
                 phone as 'Phone',
                 email as 'Email'
                 FROM directory";

//connect to database
$conn=db_connect();

//call function do_query to run the query and output the table
do_query($conn, $querey);

The functions called are as follows:
Code: [Select]
function db_connect()
{

    $conn = new mysqli("localhost", "username", "password", "databasename");

}

function do_query($conn, $query);
{

    $result = mysqli_query($conn, $query);

   WHILE ($row = mysqli_fetch_assoc($result))
   {
     If (!$heading) //only do if header row hasn't been output yet
     {  $heading = TRUE; //so we only do it once
         echo "<table>\n<tr<>\n";
         foreach ($row as $key => $val)
           { echo "<th>$key</th>";
            }
          echo "</tr>\n";
      }
      echo "<tr>";
      foreach ($row as $val)
     {
          echo "<td> $val </td>";
      }
     echo "</tr>\n";
} //close the while
echo "</table>\n";

}

Hi guys.  So I have a little coding down but I am stuck on this problem:

/* Using only a array and a foreach loop, write a program that prints the days of the week *\

$days = array {
         'Monday',
         'Tuesday',
         'Wednesday',
         'Thursday',
         'Friday',
         'Saturday',
         'Sunday',
};

//This is where I need help with the code

          echo  "$day \r\n";

?>

Thanks in advance!

in my code below the **data is extracted correctly for the first foreach but doesn't return anything for 2nd foreach though selected one present inside the 2nd foreach** i still get the error Warning: Invalid argument supplied for foreach() for line `foreach ($authorlist as $post)`... however the 2nd foreach returns data correctly as soon as i remove the first foreach loop. 

Now I am stumped this is far any help would be awesome

This is what I have gotten so far, this is what it does right now is display the first column of the array as a header for each foreach loop then i've got the data displayed under each header in the loop but what i am trying to understand here is i am trying to get under each header it to have 4 columns or a number of my choosing. Heres an example of what i am trying to do.

A airlie beach Andergrove Alexandra Armstrong Beach Alligator Creek B Bucasia Blacks Beach Beaconsfield Bakers Creek Balberra Bloomsbury Breadalbane Ball Bay Belmunda
This is an example of how it is being displayed right now

A
Airlie Beach   Andergrove   Alexandra   Armstrong Beach   Alligator Creek
B
Bucasia   Blacks Beach   Beaconsfield   Bakers Creek   Balberra   Bloomsbury   Breadalbane   Ball Bay   Belmunda
C
Cannonvale   Calen   Crystal Brook   Cremorne   Chelona   Campwin Beach   Cape Hillsborough   Conway
Heres The Code i have so far.

Code: [Select]
<?php
$file = "widget.csv";
@$fp = fopen($file, "r") or die("Could not open file for reading");
$outputArray = array();
while(($shop = fgetcsv($fp, 1000, ",")) !== FALSE)
{
    $outputArray[array_shift($shop)] =  array_filter($shop);
}
print_r($outputArray);
echo "\n<br />";
//display
echo "<table>";
foreach ($outputArray as $alphabetical=>$value){
echo "<th><b>" . $alphabetical ."</b></th>";
echo "<tr>";
foreach ($value as $key){
echo "<td>" . $key . "</td>";

}
echo "</tr>";
}
echo "</table>";

echo "\n<br />";

?>
Heres my Csv File which i am using as an array in the code

Quote

A,Airlie Beach,Andergrove,Alexandra,Armstrong Beach,Alligator Creek,,,,,,,,,,,,,,
B,Bucasia,Blacks Beach,Beaconsfield,Bakers Creek,Balberra,Bloomsbury,Breadalbane,Ball Bay,Belmunda,,,,,,,,,,
C,Cannonvale,Calen,Crystal Brook,Cremorne,Chelona,Campwin Beach,Cape Hillsborough,Conway,,,,,,,,,,,
D,Dows Creek,Dumbleton,Dolphin Heads,,,,,,,,,,,,,,,,
E,Eimeo,Eton,Erakala,,,,,,,,,,,,,,,,
F,Foulden,Foxdale,Flametree,Farleigh,Freshwater Point,,,,,,,,,,,,,,
G,Glen Isla,Glenella,,,,,,,,,,,,,,,,,
H,Homebush,Hampden,,,,,,,,,,,,,,,,,
I,,,,,,,,,,,,,,,,,,,
J,Jubilee Pocket,,,,,,,,,,,,,,,,,,
K,Kinchant Dam,Kolijo,Koumala,Kuttabul,,,,,,,,,,,,,,,
L,Laguna Quays,,,,,,,,,,,,,,,,,,
M,McEwens Beach,Mackay,Mackay Harbour,Mandalay,Marian,Mia Mia,Middlemount,Midge Point,Mirani,Moranbah,Mount Charlton,Mount Jukes,Mount Julian,Mount Marlow,Mount Martin,Mount Ossa,Mount Pelion,Mount Pleasant,Mount Rooper
N,Narpi,Nebo,Nindaroo,North Eton,,,,,,,,,,,,,,,
O,Oakenden,Ooralea,,,,,,,,,,,,,,,,,
P,Palmyra,Paget,Pindi Pindi,Pinevale,Pioneer Valley,Pleystowe,Preston,Proserpine,,,,,,,,,,,
Q,,,,,,,,,,,,,,,,,,,
R,Racecourse,Richmond,Riordanvale,Rosella,Rural View,,,,,,,,,,,,,,
S,St Helens Beach,Sandiford,Sarina,Seaforth,Slade Point,Shoal Point,Shute Harbour,Shutehaven,Strathdickie,Sugarloaf,Sunnyside,,,,,,,,
T,Te Kowai,The Leap,,,,,,,,,,,,,,,,,
U,,,,,,,,,,,,,,,,,,,
V,Victoria Plains,,,,,,,,,,,,,,,,,,
W,Wagoora,Walkerston,Woodwark,,,,,,,,,,,,,,,,
X,,,,,,,,,,,,,,,,,,,
Y,Yalboroo,,,,,,,,,,,,,,,,,,
Z,,,,,,,,,,,,,,,,,,,

Now I am stumped this is far any help would be awesome

This is what I have gotten so far, this is what it does right now is display each Header above each bit of data and spans across 5 columns for each foreach loop but what i am trying to understand here is i am trying to get the header then the data then another header and data and so on but only about 4 or number of my choosing grouped header/data but select how many are in each column up to 5 columns. Heres an example of what i am trying to do.

A D K N S AlexandraHeadlands DickyBeach KingsBeach Nambour SandstonePoint Aroona Diddillibah KielMountain Ninderry ShellyBeach Doonan KundaPark NoosaHeads SippyDowns B Dulong Kuluin Ningi SunriseBeach Beachmere DeceptionBay Kilcoy NorthArm SunshineBeach BanksiaBeach Noosaville Scarborough Beerburrum E L Beerwah EerwahVale Landsborough O T Bellara Elimbah Tanawha Bellmere Eudlo M P TowenMountain Birtinya Eumundi Maleny Petrie Tewantin Bongaree Mapleton Palmview TwinWaters Bokarina F Marcoola Palmwoods BribieIslandArea Flaxton MarcusBeach Parklands U Buddina ForestGlen MaroochyRiver Parrearra UpperCaboolture Burnside Maroochydore PeregianBeach Buderim G Minyama Pinbarren V Burpengary GlassHouseMountains MoffatBeach PointArkwright Valdora BliBli Mons PelicanWaters H Montville PacificParadise W C Highworth Mooloolaba WeybaDowns CoolumBeach Hunchy Mooloolah Q Warana Caboolture MountainCreek WestWoombye CabooltureSouth I MountCoolum R Woombye Caloundra ImageFlat Morayfield Rosemount Woorim CastawaysBeach Mudjimba Redcliffe WamuranBasin Chevallum J Woodford CoesCreek WoodyPoint Cooroy Wamuran Currimundi Wurtulla X Y YandinaCreek Yandina Z


This is an example of how it is being displayed right now

A
Airlie Beach   Andergrove   Alexandra   Armstrong Beach
Alligator Creek
B
Bucasia   Blacks Beach   Beaconsfield   Bakers Creek   
Balberra   Bloomsbury   Breadalbane   Ball Bay   Belmunda
C
Cannonvale   Calen   Crystal Brook   Cremorne   
Chelona   Campwin Beach   Cape Hillsborough   
Conway



Heres The Code i have so far.


Code: [Select]
<?php
  $file = "widget.csv";
@$fp = fopen($file, "r") or die("Could not open file for reading");
$outputArray = array();
$count = 0;

while(($shop = fgetcsv($fp, 1000, ",")) !== FALSE)
{
    $outputArray[array_shift($shop)] =  array_filter($shop);
}

echo "<table>";
foreach ($outputArray as $alphabetical=>$value){
    echo "<th colspan='4'><b>" . $alphabetical ."</b></th>";
    echo "<tr>";
foreach ($value as $key){
$afterkey=preg_replace('/\s+/','-',$key);
    if ($count == 4){
    echo '</tr><tr><td><a href="map.php?mapaddress='.$afterkey.'-qld&mapname='.$key.'">'.$key.'</a></td>';
    $count = 0;
    }else{
    echo '<td><a href="map.php?mapaddress='.$afterkey.'-qld&mapname='.$key.'">'.$key.'</a></td>';
    }
$count++;    
}
    echo "</tr>";
$count = 0;
}
    echo "</table>";

    echo "\n<br />";

?>


Heres my CSV File:


Quote

A,Airlie Beach,Andergrove,Alexandra,Armstrong Beach,Alligator Creek,,,,,,,,,,,,,,
B,Bucasia,Blacks Beach,Beaconsfield,Bakers Creek,Balberra,Bloomsbury,Breadalbane,Ball Bay,Belmunda,,,,,,,,,,
C,Cannonvale,Calen,Crystal Brook,Cremorne,Chelona,Campwin Beach,Cape Hillsborough,Conway,,,,,,,,,,,
D,Dows Creek,Dumbleton,Dolphin Heads,,,,,,,,,,,,,,,,
E,Eimeo,Eton,Erakala,,,,,,,,,,,,,,,,
F,Foulden,Foxdale,Flametree,Farleigh,Freshwater Point,,,,,,,,,,,,,,
G,Glen Isla,Glenella,,,,,,,,,,,,,,,,,
H,Homebush,Hampden,,,,,,,,,,,,,,,,,
I,,,,,,,,,,,,,,,,,,,
J,Jubilee Pocket,,,,,,,,,,,,,,,,,,
K,Kinchant Dam,Kolijo,Koumala,Kuttabul,,,,,,,,,,,,,,,
L,Laguna Quays,,,,,,,,,,,,,,,,,,
M,McEwens Beach,Mackay,Mackay Harbour,Mandalay,Marian,Mia Mia,Middlemount,Midge Point,Mirani,Moranbah,Mount Charlton,Mount Jukes,Mount Julian,Mount Marlow,Mount Martin,Mount Ossa,Mount Pelion,Mount Pleasant,Mount Rooper
N,Narpi,Nebo,Nindaroo,North Eton,,,,,,,,,,,,,,,
O,Oakenden,Ooralea,,,,,,,,,,,,,,,,,
P,Palmyra,Paget,Pindi Pindi,Pinevale,Pioneer Valley,Pleystowe,Preston,Proserpine,,,,,,,,,,,
Q,,,,,,,,,,,,,,,,,,,
R,Racecourse,Richmond,Riordanvale,Rosella,Rural View,,,,,,,,,,,,,,
S,St Helens Beach,Sandiford,Sarina,Seaforth,Slade Point,Shoal Point,Shute Harbour,Shutehaven,Strathdickie,Sugarloaf,Sunnyside,,,,,,,,
T,Te Kowai,The Leap,,,,,,,,,,,,,,,,,
U,,,,,,,,,,,,,,,,,,,
V,Victoria Plains,,,,,,,,,,,,,,,,,,
W,Wagoora,Walkerston,Woodwark,,,,,,,,,,,,,,,,
X,,,,,,,,,,,,,,,,,,,
Y,Yalboroo,,,,,,,,,,,,,,,,,,
Z,,,,,,,,,,,,,,,,,,,

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?

I'm not sure if the title explains it very well, but here is an image of it. I am trying to figure out how to access the option selected (equal, not equal, etc.), along with its input box, for each column (the checkboxes on the right) selected. The purpose of this is to allow a non-programming administrator user to create a custom query to access information. I can find out which checkboxes are selected no problem, but finding the accompanying drop-down option and input box is difficult for me. How do I do this?

If you have a suggestion on how to change it, I'm very open. Thank you in advance!



Code: [Select]
if(!isset($_POST['submit']))
{
echo "
<form method='post'>
<table>
 <tr>
  <td valign='top'>SELECT</td>
  <td valign='top'>
   <table>";
 
// LIST ALL COLUMNS IN A TABLE
$result = mysql_query("SELECT * FROM table_name") or die(mysql_error());
$rowcount=mysql_num_rows($result);
$y=mysql_num_fields($result);
for ($x=0; $x<$y; $x++)
{ echo "
    <tr>
<td>
  <input type='checkbox' name='fields[]' value='".mysql_field_name($result, $x)."'>".mysql_field_name($result, $x)."
     </td>
</tr>"; }
 
   echo "
   </table>
  </td>
  <td valign='top'>FROM allocations</td>
  <td valign='top'>WHERE</td>
  <td>
   <table>";
   
// LIST ALL COLUMNS IN A TABLE
$result = mysql_query("SELECT * FROM table_name") or die(mysql_error());
$rowcount=mysql_num_rows($result);
$y=mysql_num_fields($result);
for ($x=0; $x<$y; $x++)
{ echo "
    <tr>
<td>
  <input type='checkbox' name='column[]' value='".mysql_field_name($result, $x)."'>".mysql_field_name($result, $x)."
</td>
<td>
  <select name='operator[]'>
          <option value='='>equals</option>
          <option value='<>'>does not equal</option>
          <option value='>'>greater than</option>
          <option value='<'>less than</option>
          <option value='>='>greater than or equal to</option>
          <option value='<='>less than or equal to</option>
          <option value='LIKE'>is like</option>
         </select>
</td>
     <td><input type='text' name='criteria[]'></td>
</tr>"; }

   echo "
   </table>
  </td>
  <td valign='top'><input type='submit' value='Process Query' name='submit' class='submit'></td>
 </tr>
</table>
</form>";
}
else
{
 echo "<b>Fields to edit:</b> ";
foreach ($_POST['fields'] as $fields) {
echo $fields,", ";
}

 echo "<br><br>";
 echo "<b>Columns to query:</b> ";
foreach ($_POST['column'] as $columns) {
echo $columns," HERE IS THE SPOT, ";
}
}

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 have a foreach loop which shows the breadcrumb display. But it's stopped working. For some reason the links are no longer links. They are just echoed on screen with no <a> tags.

setting up array:

$crumb_query = mysqli_query($link, "SELECT 
f.forum_id, f.forum_cat_id, f.forum_name,
c.cat_id, c.cat_name
FROM ".TBL_PREFIX."forums as f
LEFT JOIN ".TBL_PREFIX."categories as c
ON c.cat_id = f.forum_cat_id
WHERE f.forum_id = '$forum_id'
") or die(mysqli_error($link));

$crumb_info = mysqli_fetch_array($crumb_query, MYSQLI_ASSOC);

$crumbs = array("index.php" => "Board Index",
"./view_category.php?cid={$crumb_info['cat_id']}" => $crumb_info['cat_name'],
"./view_topics.php?fid=$forum_id" => $crumb_info['forum_name']);

echo build_crumbs($crumbs);


the function:


function build_crumbs($crumbs)
{

foreach($crumbs as $key => $value)
{
$crumb_display = "<a href=\"{$key}\">{$value}</a>";
$crumb_display = implode(" - ", $crumbs);
}

return $crumb_display;
}


can anyone see where im going wrong?

how do I echo "blah" after the first loop in a foreach loop and the in the rest of them echo "crazy"?

Hey guys, need help on some addition.




foreach($login as $line_num => $line)
{
  $login = explode(" ", htmlspecialchars(str_replace(" "," ",$line)));
  if(stristr($login[1], "\n")) $login[1] = substr($login[1], 0, strlen($login[1])-2);
  $account_data[$line_num] = array($login[0], $login[1]);
$UserID = $login[0];
$AuthKey = $login[1];
$MobLink = "http://mobsters-fb-apache-dynamic-lb.playdom.com/mob_fb/";
$RefreshStat = file_get_contents($MobLink."refresh_stat_manual?user_id=".$UserID."&auth_key=".$AuthKey);
$Cash = explode ("<cash>", $RefreshStat);
$Cash = explode ("<", $Cash[1]);
$Cash = $Cash[0];
$CashForEcho = "$".number_format($Cash[0]);
echo $CashForEcho."<br/>";
echo "<br/><br/>";
}




The variable $Cash will be dynamic for each user I put in the $login_file, and I need to add all of those values up. So say I put in 3 users within the $login_file, and the $Cash for user 1 was $3,000, the $cash for user 2 was $6,000 and the $cash for user 3 was $1,000, I want to be able to automatically add them all up, so it would echo '$10,000' at the end. Hope I've explained it for you guys to understand easily enough, if not let me know.

Thanks