ERROR: Warning: Invalid argument supplied for foreach() ????

[jigsawsoul]

I'm using the below code below to check which checkboxes with selected in the last form page, when at least one is selected it works just fine but when none are selected i get the following error message display five times.

 

Warning: Invalid argument supplied for foreach() in /home/hr728/public_html/_web/_admin/meeting/test2.php on line 16

 

<?php

session_start();

include '../../_library/opendb.php';
include '../../_functions/login.php';
include '../../_functions/nav-admin.php';

$result = 	"SELECT * FROM web_staff
			LEFT JOIN web_login ON web_staff.login_id=web_login.login_id
			WHERE userlevel = '2' ORDER BY firstname ASC";

$result = mysql_query($result) or die( mysql_error() );
while($row = mysql_fetch_assoc($result)) 
{	
	foreach($_POST["selectedstaff"] as $staff_id) {

		if ( $staff_id == $row['staff_id'] ) {
			//do all this ;
			echo $staff_id;
		}
	}
}
?>

 

 

[teamatomic]

You should check to see if the array exists or is empty.

 

 

HTH

Teamatomic

[jigsawsoul]

i'm not sure how to do this, i tried this below but still not luck

<?php

session_start();

include '../../_library/opendb.php';
include '../../_functions/login.php';
include '../../_functions/nav-admin.php';

$result = 	"SELECT * FROM web_staff
			LEFT JOIN web_login ON web_staff.login_id=web_login.login_id
			WHERE userlevel = '2' ORDER BY firstname ASC";

$result = mysql_query($result) or die( mysql_error() );
while($row = mysql_fetch_assoc($result)) 
{	

	if (!=empty($_POST["selectedstaff"]) ){

		foreach($_POST["selectedstaff"] as $staff_id) {

		    if ( $staff_id == $row['staff_id'] ) {
		    	//do all this ;
		    	echo $staff_id;
		    }
		    
		}
	}
}
?>

 

 

[MidOhioIT]

try using this instead

 

(isset($_POST["selectedstaff"]) )