Clever Geek Handbook

Retrieving Stored Flag Names and Values ​​from the Database

I have a form with checkboxes, each of which has a value. When the logged in user selects any checkbox the value is incremented (summation) and then the logged in user saves it

selecting a checkbox, if satisfied with the result of summarizing into the database, it all works fine ... I want the logged in user to be able to view their selection history by fetching and displaying the checkboxes they have selected on the page with their values ​​... As I can I do it?

I can just store the selected checkboxes as choice 1, choice 2, eg ..

I want to view the selected checkboxes that are saved in the database as displayed on the page when the user first selects them: for example if a logged in user selects these 3 options

  • LEAD DEEP KEEL (1825)
  • FULLY DISCOVERED BASE (558)
  • SIDE BODY BOXES (2889)

They will be saved, for example (selection1, selection2, selection3).

But if he wants to view the selected checkboxes, then it will appear exactly as soon as he selects them:

  • LEAD DEEP KEEL (1825)
  • FULLY DISCOVERED BASE (558)
  • SIDE BODY BOXES (2889)

This is my users table:

$query="CREATE TABLE User( 
user_id      varchar(20), 
password     varchar(40),
user_type    varchar(20),
firstname    varchar(30),
lastname     varchar(30),
street   varchar(50),
city         varchar(50),
county   varchar(50),
post_code    varchar(10),
country      varchar(50),
gender   varchar(6),
dob      varchar(15),
tel_no   varchar(50),
vals         varchar(50),
email        varchar(50))";

and the code to enter the parameters selected into the database

<?php

include("databaseconnection.php");

$str = '';

foreach($_POST as $key => $val)

if (strpos($key,'choice') !== false)
 $str .= $key.',';


$query = "INSERT INTO User (vals) VALUES('$str')";
$result=mysql_query($query,$conn);
if ($result)
{
     (mysql_error();
}
else
{  
echo " done";      
}

?>

And this is my form:

      function checkTotal () {document.listForm.total.value = ''; var sum = 0; for (i = 0; i

<form name="listForm" method="post" action="insert_options.php" >
<TABLE cellPadding=3 width=600 border=0>
        <TBODY>

        <TR>
          <TH align=left width="87%" bgColor=#b0b3b4><SPAN 
            class=whiteText>Item</SPAN></TH>
          <TH align=right width="13%" bgColor=#b0b3b4><SPAN 
            class=whiteText>Select</SPAN></TH></TR>
        <TR>
          <TD  bgcolor="#9da8af"colSpan=2><SPAN class=normalText><B>General</B></SPAN></TD></TR>
        <TR>
          <TD  bgcolor="#c4c8ca"><SPAN class=normalText >TEAK SIDE DECKS (2889)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="2889" type="checkbox" onchange="checkTotal()" /></TD></TR>
        <TR>
          <TD bgColor=#c4c8ca><SPAN class=normalText>LEAD DEEP KEEL (1825)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="1825" type="checkbox" onchange="checkTotal()"></TD></TR>

        <TR>
          <TD bgColor=#c4c8ca><SPAN class=normalText>FULLY BATTENED MAINSAIL (558)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="558"  type="checkbox"  onchange="checkTotal()"></TD></TR>

        <TR>
          <TD bgColor=#c4c8ca><SPAN class=normalText>HIGH TECH SAILS FOR CONVENTIONAL RIG (1979)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="1979" type="checkbox" onchange="checkTotal()"></TD></TR>

          <TR>
          <TD bgColor=#c4c8ca><SPAN class=normalText>IN MAST REEFING WITH HIGH TECH SAILS (2539)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="2539" type="checkbox" onchange="checkTotal()"></TD></TR>

          <TR>
          <TD bgColor=#c4c8ca><SPAN class=normalText>SPlNNAKER GEAR (POLE LINES DECK FITTINGS) (820)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="820" type="checkbox" onchange="checkTotal()"></TD></TR>

          <TR>
          <TD bgColor=#c4c8ca><SPAN class=normalText>SPINNAKER POLE VERTICAL STOWAGE SYSTEM (214)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="214" type="checkbox" onchange="checkTotal()"></TD></TR>

          <TR>
          <TD bgColor=#c4c8ca><SPAN class=normalText>GAS ROD KICKER (208)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="208" type="checkbox" onchange="checkTotal()"></TD></TR>

          <TR>
          <TD bgColor=#c4c8ca><SPAN class=normalText>SIDE RAIL OPENINGS (BOTH SIDES) (392)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="392" type="checkbox" onchange="checkTotal()"></TD></TR>

          <TR>
          <TD bgColor=#c4c8ca><SPAN class=normalText>SPRING CLEATS MIDSHIPS -ALUMIMIUM (148)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="148" type="checkbox" onchange="checkTotal()"></TD></TR>


          <TR>
          <TD bgColor=#c4c8ca><SPAN class=normalText>ELECTRIC ANCHOR WINDLASS (1189)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="1189" type="checkbox" onchange="checkTotal()"> </TD></TR>




          <TR>
          <TD bgColor=#c4c8ca><SPAN class=normalText>ANCHOR CHAIN GALVANISED (50m) (202)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="202" type="checkbox" onchange="checkTotal()"> </TD></TR>



          <TR>
          <TD bgColor=#c4c8ca><SPAN class=normalText>ANCHOR CHAIN GALVANISED (50m) (1141)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="1141" type="checkbox" onchange="checkTotal()"></TD></TR>

          <TR>
          <TD  bgcolor="#9da8af"colSpan=2><SPAN class=normalText><B>NAVIGATION & ELECTRONICS</B></SPAN></TD></TR>
        <TR>
          <TD  bgcolor="#c4c8ca"><SPAN class=normalText >WIND VANE (STAINLESS STEEL)(41)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="41" type="checkbox" onchange="checkTotal()" /></TD></TR>
        <TR>
          <TD bgColor=#c4c8ca><SPAN class=normalText>RAYMARINE ST6O LOG & DEPTH (SEPARATE UNITS)(226)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="226" type="checkbox" onchange="checkTotal()"></TD></TR>

      <TR>
          <TD  bgcolor="#9da8af"colSpan=2><SPAN class=normalText><B>ENGINES & ELECTRICS</B></SPAN></TD></TR>
        <TR>
          <TD bgColor=#c4c8ca><SPAN class=normalText>SHORE SUPPLY (220V) WITH 3 OUTLETS (EXCLUDJNG SHORE CABLE) (327)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="327"  type="checkbox"  onchange="checkTotal()"></TD></TR>

        <TR>
          <TD bgColor=#c4c8ca><SPAN class=normalText>3rd BATTERY(14OA/H)(196)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="196" type="checkbox" onchange="checkTotal()"></TD></TR>

         <TD bgColor=#c4c8ca><SPAN class=normalText>24 AMP BATTERY CHARGER (475)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="475" type="checkbox" onchange="checkTotal()"></TD></TR>

          <TD bgColor=#c4c8ca><SPAN class=normalText>2 BLADED FOLDING PROPELLER (UPGRADE)(299)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="299" type="checkbox" onchange="checkTotal()"></TD></TR>


         <TR>
          <TD  bgcolor="#9da8af"colSpan=2><SPAN class=normalText><B>BELOW DECKS/DOMESTIC</B></SPAN></TD></TR>

          <TD bgColor=#c4c8ca><SPAN class=normalText>WARM WATER (FROM ENGINE & 220V)(749)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="749" type="checkbox" onchange="checkTotal()"></TD></TR>

          <TD bgColor=#c4c8ca><SPAN class=normalText>SHOWER IN AFT HEADS WITH PUMPOUT(446)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="446" type="checkbox" onchange="checkTotal()"></TD></TR>

          <TD bgColor=#c4c8ca><SPAN class=normalText>DECK SUCTION DISPOSAL FOR HOLDINGTANK(166)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="166" type="checkbox" onchange="checkTotal()"></TD></TR>

          <TD bgColor=#c4c8ca><SPAN class=normalText>REFRIGERATED COOLBOX (12V)(666)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="666" type="checkbox" onchange="checkTotal()"></TD></TR>

          <TD bgColor=#c4c8ca><SPAN class=normalText>LFS SAFETY PACKAGE (COCKPIT HARNESS POINTS STAINLESS STEEL JACKSTAYS)(208)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="208" type="checkbox" onchange="checkTotal()"></TD></TR>

          <TD bgColor=#c4c8ca><SPAN class=normalText>UPHOLSTERY UPGRADE IN SALOON (SUEDETYPE)(701)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="701" type="checkbox" onchange="checkTotal()"></TD></TR>

          <TR>
          <TD  bgcolor="#9da8af"colSpan=2><SPAN class=normalText><B>NAVIGATION ELECTRONICS & ELECTRICS</B></SPAN></TD></TR>

          <TD bgColor=#c4c8ca><SPAN class=normalText>VHF RADIO AERIAL CABLED TO NAVIGATION AREA(178)</SPAN></TD>
          <TD align=right bgColor=#c4c8ca><input  name="choice" value="178" type="checkbox" onchange="checkTotal()"></TD></TR>
</table>
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2 answers


In html form instead of

<input type="checkbox" name="choice" value="123">

do:

<input type="checkbox" name="choice[]" value="123">

This will make the selection available as an array to you.

Then change your php code to insert data into it into the database:

<?php

$str='';
foreach ($_POST['checked'] as $val)
{
    $str.=$val.',';
}

$str=substr($str,0,-1);//Remove the final comma from the end

$sql="UPDATE users SET vals='$str' WHERE user_id='$user_id'";
mysql_query($sql) or die(mysql_error());

?>


Then when displaying the selection back to the user, do the following:

Php:

<?php

$checked=array();
$sql="SELECT vals FROM users WHERE user_id='$user_id'";
$result=mysql_query($sql) or die(mysql_error());

$row=mysql_fetch_assoc($row);
$vals=explode(',',$row['vals']);


foreach ($vals as $val)
{
    if ($val !='' && is_numeric($val))
        $checked[$val]='checked';
}

function set_checked($value)
{
    global $checked;
    if (isset($checked[$value]))
        return 'checked';
    else
        return '';
}

?>

In html:

<input type="checkbox" name="choice[]" value="123" <? echo set_checked('123');?>>

PS. make sure you replace $ user_id with the user's user ID or otherwise identify it in requests.

+3


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To store the settings in the database, you must use UPDATE

, not INSERT

. You must know first user_id

. Then you have to issue a request like:

$query = "update User set val = '" . mysql_real_escape_string($str)
       . "' where user_id = $user_id";


You can use PHP explode to get an array of values ​​from your string.

$values = explode(',', $val);
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