Where do you define the $strandx array? What is it's value? ---John W. Holmes...
PHP Architect - A monthly magazine for PHP Professionals. Get your copy today. http://www.phparch.com/ > -----Original Message----- > From: Peter Gumbrell [mailto:[EMAIL PROTECTED]] > Sent: Sunday, February 02, 2003 2:08 PM > To: [EMAIL PROTECTED] > Subject: RE: [PHP] selecting from an array based on form content > > Thanks for the suggestion, John. When I implement your code, however, I > get > an error saying > Warning: Invalid argument supplied for foreach() in > home/student/peter/public_html/week4.php on line 153 > > where line 153 is > > foreach($strandx[$subject] as $strandy ) > > This is the code as I have it now: > > switch($_POST['fsubject']) > { > case "English": > $subject = "English"; > break; > case "Mathematics": > $subject = "Mathematics"; > break; > } > Print "<h4>Now select the strands for Grade $grades: > $subject:</h4></td></tr><tr><td>"; > > print "<td>"; > print "$subject"; //this tells me that I have the correct value > foreach($strandx[$subject] as $strandy ) > { > //print " <li><b>".$subject."</b>.<br />\n"; > > > print " <ul>\n"; > > foreach( $strandy as $str ) > > { print "<li>"; > checkbox("fstrand[]",$strandx,$str,0,0); > print "</li>\n"; > } > > Any help would again be appreciated. > > Peter > -----Original Message----- > From: John W. Holmes [mailto:[EMAIL PROTECTED]] > Sent: Sunday, February 02, 2003 1:28 PM > To: 'Peter Gumbrell'; [EMAIL PROTECTED] > Subject: RE: [PHP] selecting from an array based on form content > > > > The following code loops through a multidimensional array, printing > the > > subject heading and then the strand: > > > > foreach( $strandx as $subjectx=>$strandy ) > > { > > print " <li><b>".$subjectx."</b>.<br />\n"; > > > > > > print " <ul>\n"; > > asort( $strandy ); // sorts the strands > > foreach( $strandy as $str ) > > > > { print "<li>"; > > checkbox("fstrand[]",$subjectx,$str,0,0); > > print "</li>\n"; > > } > > print " </ul>\n"; > > } > > print "</ol>\n"; > > > > This is the array so far: > > $strandx = array('English' => array('Reading', 'Writing','Oral and > Visual > > Communication'), > > 'Mathematics' => array('Number Sense and Numeration', 'Measurement', > > 'Geometry and Spatial Sense','Patterning and Algebra','Data Management > and > > Probability')); > > > > I would like to limit the subject and strand being printed based on > the > > subject selected in a form. So, for example, if "English" is selected > in > > the > > form, only the subject name and the strands for English would be > > published. > > Could someone please help me with the code for this. > > Since you already know $subjectx (English or Math), then just use that > value in your foreach() loop... > > Foreach($strandx[$subjectx] as $strandy) > > Where $subjectx would come from your form. Provide some validation > first. > > So something like this: > > //Many ways to do this, just validate > //whatever is coming from your form > //matches a key in $strandx > switch($_POST['subject']) > { > case "English" > $subject = "English" > break; > default: > $subject = "Mathematics"; > break; > } > > print " <ol><li><b>".$subject."</b>.<br />\n"; > foreach( $strandx[$subject] as $strandy ) > { > print " <ul>\n"; > asort($strandy ); // sorts the strands > foreach( $strandy as $str ) > { > print "<li>"; > checkbox("fstrand[]",$subjectx,$str,0,0); > print "</li>\n"; > } > print " </ul>\n"; > } > print "</li></ol>\n"; > > ---John W. Holmes... > > PHP Architect - A monthly magazine for PHP Professionals. Get your copy > today. http://www.phparch.com/ > > > > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
