www.webdeveloper.com
Results 1 to 3 of 3

Thread: Drop Down Box accessing a SQl database

  1. #1
    Join Date
    Jan 2008
    Posts
    3

    Drop Down Box accessing a SQl database

    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <title>Untitled Document</title>
    <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
    </head>

    <body>
    <select name="mydropdown">
    <?
    require('phpsqlajax_dbinfo.php');
    $vartocheckfor = ''; //set this via querystring or whatever.
    $db = 'consolep_KmlWork'; //use this database in queries
    $table = 'State'; //use this table in queries
    $where = ' WHERE'; //use this var for extra settings
    if($where == ' WHERE'){unset($where);} //just in case you don't use the where var.
    $q = mysql_query("SELECT * FROM $db.$table $where");
    while($qd = mysql_fetch_assoc($q))
    {
    ?>
    <option value="<?=$qd[Field1]?>"<?if($vartocheckfor == $qd[Field1]){?>
    selected<?}?>><?=$qd[Field2]?></option>
    <?
    }

    ?>
    </select>
    </body>
    </html>
    What's wrong with this code. I have 50 states in a database and i want my php code to access them and put them in a drop down box.

  2. #2
    Join Date
    Nov 2006
    Location
    Springfield, MO
    Posts
    1,541
    I can't make heads or tails out of that code. Are you querying specific fields from the database table? You parse out Field1, but yet you never query for it that I see.

    Your code should look something like this:

    PHP Code:
    <?php 
    //--  Declare connection to the database 
    $db=mysql_connect ("localhost""username""password") or die ('I cannot connect to the database because: ' mysql_error()); 

    //-- Select Database 
    mysql_select_db ("mydatabase"); 

    //--  Declare variable to pull data from table 
    $query="SELECT StateDescription, StateValue FROM States"

    //--  Run the query on the DB 
    $result mysql_query($query); 

    //--  Loop through the result array and display results 
    while($row mysql_fetch_array($result)) 

    $StateDescription=$row['StateDescription'];
    $StateValue=$row['StateValue'];

    //--  Display the results of the array
    echo "<select name='states'>";
    echo 
    "<option value='$StateValue'>$StateDescription</option>";
    echo 
    "</select>";
    }

    //- close db connection

    mysql_close($db); 
    ?>
    Ryan Butler

    Ryan Butler.org

  3. #3
    Join Date
    Jan 2008
    Posts
    3
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <title>Untitled Document</title>
    <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
    </head>

    <body>
    <select name="mydropdown">
    <?
    require('phpsqlajax_dbinfo.php');

    // Opens a connection to a MySQL server.
    $connection = mysql_connect ($server, $username, $password);
    if (!$connection)
    {
    die('Not connected : ' . mysql_error());
    }

    // Sets the active MySQL database.
    $db_selected = mysql_select_db($database, $connection);
    if (!$db_selected)
    {
    die ('Can\'t use db : ' . mysql_error());
    }
    $vartocheckfor = ''; //set this via querystring or whatever.
    $db = 'consolep_KmlWork'; //use this database in queries
    $table = 'State'; //use this table in queries
    $where = ' WHERE 1'; //use this var for extra settings
    if($where == ' WHERE'){unset($where);} //just in case you don't use the where var.
    //$q = mysql_query('SELECT * FROM CTECH_Kml WHERE 1');
    $q = mysql_query("SELECT * FROM $db.$table $where");

    if (!$q)
    {
    die('Invalid query: ' . mysql_error());
    }

    while($qd = mysql_fetch_assoc($q))
    {
    ?>
    <option value="<?=$qd['id']?>"<?if($vartocheckfor == $qd[State_Name]){?>
    selected<?}?>><?=$qd[State_Name]?></option>
    <?
    }

    ?>
    </select>
    </body>
    </html>

    I figured it out, it wasn't connecting to the database correctly. I had to included some test. Hey I got another question! If the user selects a value i want the next drop down box to become undisabled and selectable. What would be the code for that?

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
HTML5 Development Center

"

"

X vBulletin 4.2.2 Debug Information

  • Page Generation 0.37881 seconds
  • Memory Usage 2,861KB
  • Queries Executed 13 (?)
More Information
Template Usage (34):
  • (1)SHOWTHREAD
  • (1)ad_footer_end
  • (1)ad_footer_start
  • (1)ad_global_above_footer
  • (1)ad_global_below_navbar
  • (1)ad_global_header1
  • (1)ad_global_header2
  • (1)ad_navbar_below
  • (1)ad_showthread_firstpost_sig
  • (1)ad_showthread_firstpost_start
  • (1)ad_thread_first_post_content
  • (1)ad_thread_last_post_content
  • (1)bbcode_php
  • (2)bbcode_quote
  • (1)footer
  • (1)forumjump
  • (1)forumrules
  • (1)gobutton
  • (1)header
  • (1)headinclude
  • (1)headinclude_bottom
  • (3)memberaction_dropdown
  • (1)navbar
  • (4)navbar_link
  • (1)navbar_moderation
  • (1)navbar_noticebit
  • (1)navbar_tabs
  • (2)option
  • (3)postbit
  • (3)postbit_onlinestatus
  • (3)postbit_wrapper
  • (1)spacer_close
  • (1)spacer_open
  • (1)tagbit_wrapper 

Phrase Groups Available (6):
  • global
  • inlinemod
  • postbit
  • posting
  • reputationlevel
  • showthread
Included Files (26):
  • ./showthread.php
  • ./global.php
  • ./includes/class_bootstrap.php
  • ./includes/init.php
  • ./includes/class_core.php
  • ./includes/config.php
  • ./includes/functions.php
  • ./includes/functions_navigation.php
  • ./includes/class_friendly_url.php
  • ./includes/class_hook.php
  • ./includes/class_bootstrap_framework.php
  • ./vb/vb.php
  • ./vb/phrase.php
  • ./includes/functions_facebook.php
  • ./includes/functions_calendar.php
  • ./includes/functions_bigthree.php
  • ./includes/class_postbit.php
  • ./includes/class_bbcode.php
  • ./includes/functions_reputation.php
  • ./includes/functions_notice.php
  • ./packages/vbattach/attach.php
  • ./vb/types.php
  • ./vb/cache.php
  • ./vb/cache/db.php
  • ./vb/cache/observer/db.php
  • ./vb/cache/observer.php 

Hooks Called (70):
  • init_startup
  • friendlyurl_resolve_class
  • init_startup_session_setup_start
  • database_pre_fetch_array
  • database_post_fetch_array
  • init_startup_session_setup_complete
  • global_bootstrap_init_start
  • global_bootstrap_init_complete
  • cache_permissions
  • fetch_threadinfo_query
  • fetch_threadinfo
  • fetch_foruminfo
  • load_show_variables
  • load_forum_show_variables
  • global_state_check
  • global_bootstrap_complete
  • global_start
  • style_fetch
  • global_setup_complete
  • showthread_start
  • showthread_getinfo
  • strip_bbcode
  • friendlyurl_clean_fragment
  • friendlyurl_geturl
  • forumjump
  • cache_templates
  • cache_templates_process
  • template_register_var
  • template_render_output
  • fetch_template_start
  • fetch_template_complete
  • parse_templates
  • fetch_musername
  • notices_check_start
  • notices_noticebit
  • process_templates_complete
  • friendlyurl_redirect_canonical
  • showthread_post_start
  • showthread_query_postids
  • showthread_query
  • bbcode_fetch_tags
  • bbcode_create
  • showthread_postbit_create
  • postbit_factory
  • postbit_display_start
  • postbit_imicons
  • bbcode_parse_start
  • bbcode_parse_complete_precache
  • bbcode_parse_complete
  • postbit_display_complete
  • memberaction_dropdown
  • tag_fetchbit_complete
  • forumrules
  • navbits
  • navbits_complete
  • build_navigation_data
  • build_navigation_array
  • check_navigation_permission
  • process_navigation_links_start
  • process_navigation_links_complete
  • set_navigation_menu_element
  • build_navigation_menudata
  • build_navigation_listdata
  • build_navigation_list
  • set_navigation_tab_main
  • set_navigation_tab_fallback
  • navigation_tab_complete
  • fb_like_button
  • showthread_complete
  • page_templates