shams Posted August 5, 2018 Share Posted August 5, 2018 Hi, This is a code dd.php with two drop down list options, when select the value from the first drop down it retrieves the related values from the column subcategory from the second table subcategory and prents only these two columns: Value of $cat = 2 Value of $subcat = user@gmx.ca My question is how to pass the value of $subcat to the query below in the same dd.php page and prints the full row of the table subcategory which has more 4 columns: SELECT * FROM subcategory WHERE subcategory=?; this is dd.php: <?php require 'config.php'; // Database connection //////// End of connecting to database //////// ?> <!doctype html public "-//w3c//dtd html 3.2//en"> <html> <head> <title>Multiple drop down list box from plus2net</title> <SCRIPT language=JavaScript> function reload(form) { var val=form.cat.options[form.cat.options.selectedIndex].value; self.location='dd.php?cat=' + val ; } </script> </head> <body> <?Php @$cat=$_GET['cat']; // Use this line or below line if register_global is off if(strlen($cat) > 0 and !is_numeric($cat)){ // to check if $cat is numeric data or not. echo "Data Error"; exit; } ///////// Getting the data from Mysql table for first list box////////// $quer2="SELECT DISTINCT category,cat_id FROM category order by category"; ///////////// End of query for first list box//////////// /////// for second drop down list we will check if category is selected else we will display all the subcategory///// if(isset($cat) and strlen($cat) > 0){ $quer="SELECT DISTINCT * FROM subcategory where cat_id=$cat order by subcategory"; }else{$quer="SELECT DISTINCT * FROM subcategory order by subcategory"; } ////////// end of query for second subcategory drop down list box /////////////////////////// echo "<form method=post name=f1 action='dd-check.php'>"; /// Add your form processing page address to action in above line. Example action=dd-check.php//// ////////// Starting of first drop downlist ///////// echo "<select name='cat' onchange=\"reload(this.form)\"><option value=''>Select one</option>"; foreach ($dbo->query($quer2) as $noticia2) { if($noticia2['cat_id']==@$cat){echo "<option selected value='$noticia2[cat_id]'>$noticia2[category]</option>"."<BR>";} else{echo "<option value='$noticia2[cat_id]'>$noticia2[category]</option>";} } echo "</select>"; ////////////////// This will end the first drop down list /////////// ////////// Starting of second drop downlist ///////// echo "<select name='subcat'><option value=''>Select one</option>"; foreach ($dbo->query($quer) as $noticia) { echo "<option value='$noticia[subcategory]'>$noticia[subcategory]</option>"; } echo "</select>"; ////////////////// This will end the second drop down list /////////// //// Add your other form fields as needed here///// echo "<input type=submit value=Submit>"; echo "</form>"; while ($row = $quer->fetch(PDO::FETCH_ASSOC)) { echo ('cat_id =' . $row['cat_id'] . "\r\n" . 'subcategory=' . $row['subcategory']. "\r\n". 'user=' . $row['user'] . "\r\n". 'passw=' . $row['passw']. "\r\n". 'server=' . $row['server'] . '<br />'); } ?> <br><br> <a href=dd.php>Reset and start again</a> <br><br> <center><a href='http://www.plus2net.com' rel="nofollow">PHP SQL HTML free tutorials and scripts</a></center> </body> </html> Link to comment Share on other sites More sharing options...
benanamen Posted August 5, 2018 Share Posted August 5, 2018 So, you want us to debug some third party code that you literally just copy/pasted from the internet? Perhaps you should contact the author of the script at https://www.plus2net.com/php_tutorial/php_drop_down_list.php Link to comment Share on other sites More sharing options...
requinix Posted August 5, 2018 Share Posted August 5, 2018 HTML 3.2!? Link to comment Share on other sites More sharing options...
Barand Posted August 6, 2018 Share Posted August 6, 2018 Probably using Netscape. Link to comment Share on other sites More sharing options...
requinix Posted August 6, 2018 Share Posted August 6, 2018 Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.