Warning: Invalid argument supplied for foreach() in ...

[abs0lut]

Warning: Invalid argument supplied for foreach() in ...

<?php 
session_start();
include 'conn.php';
$post = $_GET['post'];

if(isset($_POST['checkb'])){
    if(count($_POST['$iqid']) > 0){            
        foreach($_POST['$iqid'] as $awr) {
        $result = mysql_query("UPDATE ctable SET updated='yes' WHERE id='$awr'") or die(mysql_error());
        
            }        
    }            
} else{

?>   
<form method="post" name="formk" action="<?= $_SERVER['PHP_SELF']. '?' . $_SERVER['QUERY_STRING'] ?>">
<?php
$result = mysql_query("SELECT cid, iqid, cost, usersid FROM ctable WHERE post=$post");
while ($row = mysql_fetch_array($result))
{
  $arr[$row['iqid']][$row['usersid']] = $row['cost'];
  $arr2[$row['iqid']][$row['usersid']] = $row['cid'];
  $uid[] = $row['usersid'];
}
$uid = array_unique($uid);
$qid = array_keys($arr);

echo '<table><tr><td></td>';
foreach($uid as $userid) echo "<td>$userid</td>";
echo '</tr>';
foreach($qid as $iqid)
{
  echo "<tr><td>$iqid</td>";
  foreach($uid as $userid)
  {
    if (isset($arr[$iqid][$userid]))
    {       
        echo "<td>".$arr[$iqid][$userid]."<input type='radio' name='$iqid' value='{$arr2[$iqid][$userid]}'></td>";    
    }
    else echo "<td></td>";    
  }
  echo "</tr>";
}
echo '</table>';
echo '<input type="submit" name="checkb" />';
echo'</form>';    

}
?> 

thanks, please check...

[kenrbnsn]

What is the full error message? It tells you which line has the problem.

 

Ken

[abs0lut]

Warning: Invalid argument supplied for foreach() in n /public_html/****/***** online 8

[vbnullchar]

change your condition to this

 

if(!empty($_POST['$iqid']) &&  count($_POST['$iqid']) > 0)

 

 

[.josh]

in your form, iqid is a radio button, so only 1 option will be selected, and $_POST['iqid'] will not be an array.  Were you perhaps meaning to do name='iqid[]' and have checkboxes?

[abs0lut]

Crayon Violent,

the name of the radio button is $iqid

I don't want to use checkbox

 

vbnullchar, don't I need to change

foreach($_POST['$iqid'] as $awr) ??

 

could you please help me?

[vbnullchar]

Crayon Violent,

the name of the radio button is $iqid

I don't want to use checkbox

 

vbnullchar, don't I need to change

foreach($_POST['$iqid'] as $awr) ??

 

could you please help me?

 

if $_POST['$iqid'] is an array just leave it that way.. just add an array check before that

 

[.josh]

okay...so you want a radio button.  But that's the point.  Your form has a bunch of radio buttons. Only one will be selected.  So $_POST['iqid'] will never be an array.  It will always be just a variable with one of those radio button values.  Therefore, your foreach loop will never work.  There's no point in even having your query inside a loop at all.  You're getting a single value from your form and updating your database with that value.  No foreach loop or any loop at all required.

 

If you do what vbnullchar says, your query will never be executed because it will never be an array.