PHP - Mysql And Php Help With Variable

I am trying to allow the user to update a variable he chooses by radio buttons, which they will then input text into a box, and submit, to change some attributes. I really need some help here.  It works just fine until I add the second layer of variables on top of it, and I can't find the answer to this question anywhere.

<?PHP require('connect.php'); ?>

<form action ='' method='post'> <select name="id">

<?php
$extract = mysql_query("SELECT * FROM cars");
   
   while($row=mysql_fetch_assoc($extract)){
   $id = $row['id'];
   $make= $row['make'];
   $model= $row['model'];
   $year= $row['year'];
   $color= $row['color'];

echo "<option value=$id>$color $year $make $model</option>
";}?>

</select>

Which attribute would you like to change?<br />
<input type="radio" name="getchanged" value="make"/>Make<br />
<input type="radio" name="getchanged" value="model"/>Model<br />
<input type="radio" name="getchanged" value="year" />Year<br />
<input type="radio" name="getchanged" value="color"   />Color<br /><br />

   <br /><input type='text' value='' name='tochange'>
   <input type='submit' value='Change' name='submit'>

</form>

//This is where I need help...

<?PHP
if(isset($_POST['submit'])&&($_POST['tochange'])){
mysql_query("
   UPDATE cars
   SET '$_POST[getchanged]'='$_POST[tochange]'
   where id = '$_POST[id]'
         ");}?>

I am trying to extract a value that is stored in a variable from my database. It will not work with how I have the code written. If I replace .$tournament with what I want it to find, it will give me the correct result. ANy suggestions?


Below is my code:
Code: [Select]
$result = mysql_query("SELECT id FROM `2012_tournaments` WHERE tournament = .$tournament");

while($row = mysql_fetch_array($result))
  {
  echo $row['id'];
  };

hello can anyone help me how to insert GET variable into mysql   


<?php
$page_title = 'Personal Wellness';
include ('template/header.inc');
include_once('config.php');

$id = $_GET['id'];

if(isset($_POST['submit']))
//if submit was pressed
{
if(strlen($_POST['height'])<1) //if there was no height
{
print "You did not enter a height.";
}
else if(strlen($_POST['weight'])<1) //no weight
{
print "You did not enter a weight.";
}
else if(strlen($_POST['bodyfat'])<1) //no bodyfat
{
print "You did not enter a Body Fat Range";
}
else if (strlen ($_POST['bodywater'])<1) //no bodywater
{
print "You did not enter a Body Water Range";
}
else if( strlen($_POST['musclemass'])<1) //no musclemass
{
print "You did not enter a Muscle Mass";
}
else if (strlen ($_POST['physiqueratt'])<1) //no physiqueratt
{
print "You did not enter a Physique Ratings";
}
else if (strlen ($_POST['bonemass'])<1) //no bonemass
{
print "You did not enter a Bone Mass";
}
else if (strlen ($_POST['bmr'])<1) //no bmr
{
print "You did not enter a BMR";
}
else if (strlen ($_POST['basalmetabolic'])<1) //no basalmetabolic
{
print "You did not enter a Basal Metabolic Age";
}
else if (strlen ($_POST['visceralfat'])<1) //no visceralfat
{
print "You did not enter a Visceral Fat";
}
else if(strlen($_POST['registrationmonth'] && $_POST['registrationday'] && $_POST['registrationyear'])<1) // no date
{
print "You did not enter a date of birth";
}
else //all fields met
{
$id=$_GET['id'];
$height=$_POST['height'];
$weight=$_POST['weight'];
$bodyfat=$_POST['bodyfat'];
$bodywater=$_POST['bodywater'];
$musclemass=$_POST['musclemass'];
$physiqueratt=$_POST['physiqueratt'];
$bonemass=$_POST['bonemass'];
$bmr=$_POST['bmr'];
$basalmetabolic=$_POST['basalmetabolic'];
$visceralfat=$_POST['visceralfat'];
$date=$_POST['registrationyear'] . '-' . $_POST['registrationmonth'] . '-' . $_POST['registrationday'];

$insertadmin="INSERT into personalwelness (m_id,height,weight,body_fat,body_water,muscle_mas s,physique_ratt,bone_mass,bmr,basal_metabolic,visc eral_fat,evaluation_date) values ('$id','$height','$weight','$bodyfat','$bodywater','$mus clemass','$physiqueratt','$bonemass','$bmr','$basa lmetabolic','$visceralfat','$date')"; //registering admin in databae
echo $insertadmin;
$insertadmin2=mysql_query($insertadmin) or die("Could not insert admin");
print "Personal Wellness Successfully Submitted";
}
}

?>
<form method="post" class="form" action="<?php echo $_SERVER['PHP_SELF'];?>">
<fieldset><legend>Enter Personal Wellness Information in the form below:</legend>

<table width="80%" border="0">
<tr>
<td width="16%">Height(CM)</td>
<td width="2%">:</td>
<td width="82%"><label for="height"></label>
<input type="text" name="height" id="height" value="<?php if (isset($_POST['height']))
echo $_POST['height'];?>" /></td>
</tr>
<tr>
<td>Weight(KG)</td>
<td>:</td>
<td><label for="weight"></label>
<input type="text" name="weight" id="weight" value="<?php if (isset($_POST['weight']))
echo $_POST['weight'];?>" /></td>
</tr>
<tr>
<td >Body Fat Range</td>
<td>:</td>
<td><label for="body fat"></label>
<input type="text" name="bodyfat" id="bodyfat" value="<?php if (isset($_POST['bodyfat']))
echo $_POST['bodyfat'];?>" ></td>
</tr>
<tr>
<td>Body Water Range(%)</td>
<td>:</td>
<td><label for="bodywater"></label>
<input type="text" name="bodywater" id="bodywater" value="<?php if (isset($_POST['bodywater']))
echo $_POST['bodywater'];?>"/></td>
</tr>
<tr>
<td>Muscle Mass</td>
<td>:</td>
<td><label for="musclemass"></label>
<input type="text" name="musclemass" id="musclemass" value="<?php if (isset($_POST['musclemass']))
echo $_POST['musclemass'];?>"></td>
</tr>
<tr>
<td>Physique Ratings</td>
<td>:</td>
<td><label for="physiqueratt"></label>
<input type="text" name="physiqueratt" id="physiqueratt" value="<?php if (isset($_POST['physiqueratt']))
echo $_POST['physiqueratt'];?>"></td>
</tr>
<tr>
<td>Bone Mass</td>
<td>:</td>
<td><label for="bonemass"></label>
<input type="text" name="bonemass" id="bonemass" value="<?php if (isset($_POST['bonemass']))
echo $_POST['bonemass'];?>" /></td>
</tr>
<tr>
<td>BMR</td>
<td>:</td>
<td><label for="bmr"></label>
<input type="text" name="bmr" id="bmr" value="<?php if (isset($_POST['bmr']))
echo $_POST['bmr'];?>"/></td>
</tr>
<tr>
<td>Basal Metabolic Age</td>
<td>:</td>
<td><label for="basalmetabolic"></label>
<input type="text" name="basalmetabolic" id="basalmetabolic" value="<?php if (isset($_POST['basalmetabolic']))
echo $_POST['basalmetabolic'];?>"></td>
</tr>
<tr>
<td>Visceral Fat</td>
<td>:</td>
<td><label for="visceralfat"></label>
<input type="text" name="visceralfat" id="visceralfat" value="<?php if (isset($_POST['visceralfat']))
echo $_POST['visceralfat'];?>"></td>
</tr>
<tr>
<td>Evaluation Date</td>
<td>:</td>
<td> <?php echo date_picker("registration")?></td>
</tr>
</table>
</fieldset>
<div align="center"><input type="submit" name="submit" value="Submit" />

</div>
</form>
<?php
function date_picker($name, $startyear=NULL, $endyear=NULL)
{
if($startyear==NULL) $startyear = date("Y")-100;
if($endyear==NULL) $endyear=date("Y")+50;

$months=array('','January','February','March','Apr il','May',
'June','July','August', 'September','October','November','December');

// Month dropdown
$html="<select name=\"".$name."month\">";

for($i=1;$i<=12;$i++)
{
$html.="<option value='$i'>$months[$i]</option>";
}
$html.="</select> ";

// Day dropdown
$html.="<select name=\"".$name."day\">";
for($i=1;$i<=31;$i++)
{
$html.="<option $selected value='$i'>$i</option>";
}
$html.="</select> ";

// Year dropdown
$html.="<select name=\"".$name."year\">";

for($i=$startyear;$i<=$endyear;$i++)
{
$html.="<option value='$i'>$i</option>";
}
$html.="</select> ";

return $html;
}
?>

<?php
include ('template/footer.inc');
?>

Hi again everyone,

I am trying to compare a php variable to the value of a row in mysql, but keep getting the following error:

Code: [Select]
Wrong perameter count for mysql_result()

What syntax would I use to accomplish this?

Here is my code:


// connects to server and selects database.
include ("../includes/dbconnect.inc.php");

// table name
$table_name = "availability";

// split up date into 3 separate fields
$date = "12/25/2010";
$date_split = explode("/", $date);
$month = $date_split[0];
$day = $date_split[1];
$year = $date_split[2];

// check if earth room is already reserved
$taken = "Reserved";
$sql = "SELECT earth_room FROM $table_name WHERE month='$month' AND day='$day' AND year='$year' LIMIT 1";
$result = mysql_query($sql) or trigger_error("A mysql error has occurred!");
$row = mysql_result($result);

if($row == $taken){
echo "Room Already Reserved";
}
else{
echo "Room Available";
}


Thanks for the help,

kaiman

You guys are great, thanks again for the help last week.

Now I almost got this working but a small hiccup.

here is my code:
Code: [Select]

<?php 
include("config.php");
$my_t=getdate(date("U"));
$my_t1=$my_t[weekday];
$result = mysql_query("SELECT * FROM tourney where day_of_week = '$my_t1'") or die(mysql_error()); 
if ($result == '') echo "<br>Empty Set\n";
print_r ($my_t1); This prints correctly

Code: [Select]
while ($result = mysql_fetch_array($result,MYSQL_ASSOC)) { This is my error. "Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in /hermes/bosweb/web017/b172/ipg.dswdesignsnet/pp4c/charity1.php on line 8"

Code: [Select]
print "<b>Starting Time: <br></b>".$row{'start_time'}."<br><b>Tournament: </b><br>".$row{'tourney'}."<br><b>Buy-in: <br>".$row{'buy_in'}."<br><b>Starting Chips: <br>".$row{'start_chips'}."</font><p>";
This prints headers correctly, but no variables.

Code: [Select]
}
mysql_close($dbh);
?>
What did I forget to do or what did I do wrong.

I'm still learning mysql and php.