PHP - New Order After Delete

I have a mysql table with the following sequential number

Order

1
2
3
4
5
6
7

Say I choose to delete number 4, how do I create a script to subtract 1 from each number greater than 4 in the list to keep the remaining numbers in sequence?

Hello all,

I have used the phpfreaks custom order list script to create, well, a custom order list, but for some reason the Delete section of the code is not reassigning the numbers correctly after an item is deleted. It deletes the record okay, but if I have:

1
2
3
4
and delete 3, then 4 should become 3
but 4 stays as 4 until it moves two places and then it becomes 3.
I am sure its related to part of this code, but please let me know if you have any ideas.

Cheers
Pockitz


 // delete row from table
   $sql = "DELETE FROM images WHERE imgsequenceid = '$seqid'";
   $result = mysql_query($sql) or die(mysql_error());
   
   if($result){
echo "Image $seqid successfully deleted from $id";
}else{
echo "ERROR";
}


// select the info, ordering by sequenceid
   $sql = "SELECT imgsequenceid, imgid FROM images ORDER BY imgsequenceid";
   $result = mysql_query($sql) or die(mysql_error());
   // initialize a counter for rewriting sequenceid
   $seqid = 1;
   // while there is info to be fetched...
   while ($r = mysql_fetch_assoc($result)) {
      $imgid = $r['imgid'];
      // update the sequenceid number to the one in the next number
      $sql = "UPDATE images SET imgsequenceid = '$seqid' WHERE imgid = '$imgid'";
      $update = mysql_query($sql) or die(mysql_error());
      // inc to next avail number
      $seqid++;
   } // end while
} // end if del  

Hi everyone. I'm very new into self learning programming. Presently I'm trying to develop a simple basic Robot that would only Place a Market Order every seconds and it will cancel the Order every followed seconds. Using the following library:
https://docs.b2bx.exchange/en/_docs/api-reference.html#private-api

It would place Trade Order at a ( Price = ex.com api * Binance api Aggregate Trades Price)

I have already wrote the api to call for xe.com exchange rate with php 

<?php

$auth = base64_encode("username:password");
$context = stream_context_create([
    "http" => [
        "header" => "Authorization: Basic $auth"
    ]
]);
$homepage = file_get_contents("https://xecdapi.xe.com/v1/convert_from?to=NGN&amount=1.195", false, $context );
$json = json_decode($homepage, TRUE);
foreach ($json as $k=>$to){
    echo $k; // etc
};


?>

And also for the Binance Aggregate Price in JavaScript

 

<script>
var burl = "https://api3.binance.com";

var query = '/api/v3/aggTrades'; 

query += '?symbol=BTCUSDT';

var url = burl + query;

var ourRequest = new XMLHttpRequest();

ourRequest.open('GET',url,true);
ourRequest.onload = function(){
    console.log(ourRequest.responseText);
}
ourRequest.send();
</script>

  My problem  is how to handle these two api responds  and also the functions to use them to place a trade and cancel it.
Please help me out. Thanks in advance on any help.

Hi all.
Here is my scripts which allow user to check multiple rows of data and delete it , but it require select data and click for twice to delete the rows , what should be the error?

Code: [Select]
<form name="frmSearch" method="post" action="insert-add.php">

<table width="600" border="1">
  <tr>
    <th width="50"> <div align="center">#</div></th>
    <th width="91"> <div align="center">ID </div></th>
    <th width="198"> <div align="center">First Name </div></th>
    <th width="198"> <div align="center">Last Name </div></th>
    <th width="250"> <div align="center">Mobile Company </div></th>
    <th width="100"> <div align="center">Cell </div></th>
    <th width="100"> <div align="center">Workphone </div></th>
    <th width="100"> <div align="center">Group </div></th>
  </tr>
    </form>
<?

    echo "<form name='form1' method='post' action=''>";

while($objResult = mysql_fetch_array($objQuery))
{


    echo "<tr>";
    echo "<td align='center'><input name=\"checkbox[]\" type=\"checkbox\" id=\"checkbox[]\" value=\"$objResult[addedrec_ID]\"></td>";
    echo "<td>$objResult[addedrec_ID] </td>";
    echo "<td>$objResult[FirstName]</td>";
    echo "<td>$objResult[LastName] </td>";
    echo "<td>$objResult[MobileCompany] </td>";
    echo "<td>$objResult[Cell] </td>";
    echo "<td>$objResult[WorkPhone] </td>";
    echo "<td>$objResult[Custgroup] </td>";

   echo "</tr>";

}


 echo "<td colspan='7' align='center'><input name=\"delete\" type=\"submit\" id=\"delete\" value=\"Delete\">";

 if (isset($_POST['delete']) && isset($_POST['checkbox'])) // from button name="delete"
 {
 $checkbox = ($_POST['checkbox']); //from name="checkbox[]"
     $countCheck = count($_POST['checkbox']);

 for($d=0;$d<$countCheck;$d++)
     {
         $del_id  = $checkbox[$d];

 $sql = "DELETE from UserAddedRecord where addedrec_ID = $del_id";

 $result2=mysql_query($sql)  or trigger_error(mysql_error());;;

     }
         if($result2)
     { 
          $fgmembersite->GetSelfScript();
         }
         else
         {
 echo "Error: ".mysql_error();
         }
 }
  echo "</form>";


Thanks for every reply.

 <body>
 
 
  <?php
    

 
       include 'sql.php';
       $query = "SELECT * FROM validation";
       $result = mysqli_query($con , $query);  
       $rows = mysqli_fetch_assoc($result) ;
       $totals = mysqli_num_rows($result) ;
   
      
      
          ?>
            <div id="css">
    <form >
       <table width="80%" border="0" cellpadding="2" cellspacing="2" >
          <caption><h2>Personal Details of Customers</h2></caption>
          <tr class="white">
              <td bgcolor="#330033"> &nbsp; </td>
              <td bgcolor="#330033"> Id Number </td>
              <td bgcolor="#330033"> Full Name </td>
              <td bgcolor="#330033"> Email Address </td>
              <td bgcolor="#330033"> Website </td>
              <td bgcolor="#330033"> Comment </td>
              <td bgcolor="#330033"> Time </td>   
     
</tr>
       <?php while($rows=mysqli_fetch_assoc($result)
       {
       <tr>
      
      <input type="raido" name="ID" value="<?php echo $rows['ID']; ?>"  />
      <td bgcolor="#FFFFCC"><?php  echo $rows['ID'];?></td>
      <td bgcolor="#FFFFCC"><?php  echo $rows['Name'];?> </td>
      <td bgcolor="#FFFFCC"><?php  echo $rows['Email'];?></td>
      <td bgcolor="#FFFFCC"><?php  echo  $rows['Website'];?></td>
      <td bgcolor="#FFFFCC"><?php  echo $rows['Comment'];?></td>
      <td bgcolor="#FFFFCC"><?php  echo $rows['Time'];?></td>  
      
       <td>&nbsp;</td>
     
       <td> <a href="delete.php? ID= "$rows[ID]" /"> <input type="submit" name="del" value="Delete" /> </a> &nbsp;                                                     <input type="button" name=   "edit" value="Edit"  /> </td>
       </tr>
              } 

?>
 
     </table>
   </form>
  </div>
 
 </body>