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/