PHP - Delete Multiple Entries

$error=array();
$sql = 'INSERT INTO staff(username, email, phone)
VALUES (?, ?, ?)';
$stmt = $conn->stmt_init();
$stmt = $conn->prepare($sql);
// bind parameters and insert the details into the database
$stmt->bind_param('sss', $username, $email, $phone);
$stmt->execute();
if ($stmt->errno == 1062) {
$errors[] = "One of the fields is already in use.";
}

Hi All,

I am adding a button that will delete many things in the system which all have the same $job_id

There is going to be 10 or so tables that need to delete *  where $job_id = ?

Is there a better way to do this rather than just iterating my code 10 times.

I was looking at just joining but isnt one benefit of prepared statements that they can be used again and again to increase speed.

//Delete all matches not accepted after 1 day
$arrayin = array();
$autorefund = mysql_query("SELECT * FROM `challenges` WHERE `a` = " . $team['id'] . " "
. "AND `accepted` = 0 AND `completed` = 0 AND `chtype` = 1 AND (`expires` < " . ((int) time()) . ")");
if (mysql_num_rows($autorefund) > 0) {
while ($autorefund = mysql_fetch_assoc($autorefund)) {
$arrayin[] = $autorefund['id'];
mysql_query("UPDATE `teams` SET `balance` = `balance` + " . $autorefund['credits'] . " "
. "WHERE `id` IN (" . mysql_real_escape_string(implode(',', $arrayin)) . ")");
mysql_query("DELETE FROM `challenges` WHERE `a` IN "
. "(" . mysql_real_escape_string(implode(',', $arrayin)) . ") "
. "AND `accepted` = 0 AND `completed` = 0 AND `chtype` = 1 "
. "AND (`expires` < " . ((int) time()) . ")");
}
}

$autorefund   = mysql_query("SELECT * FROM `challenges` WHERE `a` = " . $team['id'] . " AND  `accepted` = 0 AND `completed` = 0 AND `chtype` = 1 AND (`expires` < ".((int)time()).")");
if (mysql_num_rows($autorefund) > 0) {
while ($autorefund  = mysql_fetch_assoc($autorefund)) {
if ($autorefund['accepted'] == 0 and $autorefund['expires'] < time()) {
mysql_query("UPDATE `teams` SET `balance` =  `balance` + " . $autorefund['credits'] . " WHERE `id` = " . $team['id'] . "");
mysql_query("DELETE FROM `challenges` WHERE `a` = " . $team['id'] . " AND  `accepted` = 0 AND `completed` = 0 AND `chtype` = 1 AND (`expires` < ".((int)time())."));
}
}
}

 
       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>
              }