PHP - How To Delete The Last 4 Entrys In An Array.

//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>
              } 

Hi All,

Suppose I have the following array, with a series of subarrays.

Is there a quicker/better way than the one below to delete the subarrays whose ALL values are contained in another subarray ?

Thanks!

$global_array = array(
  $sub_array1 = array
(
    0 => 8661,
    1 => 8662
),
 
  $sub_array2 = array
(
    0 => 8662
   ),
  $sub_array3 = array
(
    0 => 8667,
    1 => 8770
),
  $sub_array4 = array
(
    0 => 8672,
    1 => 8770,
    2 => 8772,
),
  $sub_array5 = array
(
    0 => 8706,
    1 => 8707,
    2 => 8805,
),
  $sub_array6 = array
(
    0 => 8707,
    1 => 8805
),
  $sub_array7 = array
(
    0 => 8714,
    1 => 8811,
    2 => 8816,
),
  $sub_array8 = array
(
    0 => 8718,
    1 => 8720,
    2 => 8816,
),
  $sub_array9 = array
(
    0 => 8720
 ),
  $sub_array10 = array
(
    0 => 8724,
    1 => 8726,
    2 => 8727,
),
  $sub_array11 = array
(
    
    0 => 8726,
    1 => 8727
),
  $sub_array12 = array
(
    0 => 8727
)

);

print_r($global_array);
$tobedeleted=array();

foreach ($global_array as $k=>$v ){
foreach ($global_array as $k2=>$v2){
    if(($k<>$k2) &&(count($global_array[$k])<=count($global_array[$k2])))
  {
  $count=count(array_diff($global_array[$k], $global_array[$k2]));
   
  
   if($count==0 && !in_array($k,$tobedeleted))
    {
    
    
    $tobedeleted[]=$k;
        
    }
  }   
 }
}
print_r($tobedeleted);
foreach ($tobedeleted as $k=>$v )
{
unset ($global_array[$v]);
}
print_r($global_array);