Help with forms and php

[sac0o01]

I am trying to set a variable value through a form.  A user selects a color and the form sets the value of the variable. 

 

Maybe I am way off on how to set it up.  Here is what I have tried:

 

Form

<h4>Choose Color</h4>
<select name="color">
<option value="<?php $black ?>">Black</option>
<option value="<?php $white ?>">White</option>
<option value="<?php $grey ?>">Gray</option>
<option value="<?php $limegreen ?>">Limegreen</option>
</select>

 

And the PHP I am trying to execute:

$color  = $_POST['color'];

$black = imagecolorallocate($bg, 0, 0, 0);
$white = imagecolorallocate($bg, 255, 255, 255);
$grey = imagecolorallocate($bg, 128, 128, 128);
$limegreen = imagecolorallocate($bg, 194, 247, 0);

imagettftext($bg, $fontsize, 0, $x, $y, $color, $font, $text );

 

I am just trying to set the "$color" variable I have all the others working.  I still have much to learn so I may be totally out on my approach.

[wildteen88]

Well first you're not echo'ing the following variables correctly

<option value="<?php $black ?>">Black</option>
<option value="<?php $white ?>">White</option>
<option value="<?php $grey ?>">Gray</option>
<option value="<?php $limegreen ?>">Limegreen</option>

You need to place echo before each variable otherwise nothing will be outputted and your form will submit blank values. I am assuming you have defined values for those variables too?

 

Secondly make sure you have wrapped your form items within <form action="path/to/proccessing/page.php" method="post"></form> tags and that you have defined a submit button, eg

<input type="submit" name="submit" value="Submit" />

[sac0o01]

I believe the form part is correct:

 

<form action="text2png2.php" method="post"> 		  

<h4>Choose desired font</h4>
<select name="font"> 
<option value="fonts/aerosol.ttf">Aerosol</option>
<option value="fonts/amsterdam.ttf">Amsterdam</option>
<option value="fonts/degrassi.ttf">Degrassi</option>
<option value="fonts/GRAFFITI.ttf">GRAFFITI</option>
<option value="fonts/bubble.ttf">Bubble</option>
<option value="fonts/3d-drop.ttf">3D Drop</option>
<option value="fonts/atomic-bomb.ttf">Atomic-Bomb</option>
<option value="fonts/graffonti.ttf">Graffonti</option>
<option value="fonts/juice.ttf">Juice</option>
<option value="fonts/mostwasted.ttf">Most Wasted</option>
<option value="fonts/nosed.ttf">Nosed</option>
<option value="fonts/street-soul.ttf">Street Soul</option>
<option value="fonts/stylin.ttf">Stylin</option>
</select>

<h4>Choose Color</h4>
<select name="color">
<option value="<?php echo $black ?>">Black</option>
<option value="<?php echo $white ?>">White</option>
<option value="<?php echo $grey ?>">Gray</option>
<option value="<?php echo $limegreen ?>">Pink</option>
</select>

<h4>Font Size</h4>
<select name="size" value="65" default="65">
<option value="25">25</option>
<option value="35">35</option>
<option value="45">45</option>
<option value="55">55</option>
<option value="65" selected>65</option>
<option value="75">75</option>
<option value="85">85</option>
</select>

<h4>Enter Text</h4> 

<input type="text" name="text" >


<input type="submit" name="submit" value="Create!!"/>
</form>

 

I thought I was defining the variables here:

$color = $_POST['color'];
$black = imagecolorallocate($bg, 0, 0, 0);
$white = imagecolorallocate($bg, 255, 255, 255);
$grey = imagecolorallocate($bg, 128, 128, 128);
$limegreen = imagecolorallocate($bg, 194, 247, 0);

 

I take it I am missing something here...

 

[wildteen88]

Umm. Yes your form part is sort of correct. I guess the variables $black, white, $grey and $limegreen are referring to these variables

$black = imagecolorallocate($bg, 0, 0, 0);
$white = imagecolorallocate($bg, 255, 255, 255);
$grey = imagecolorallocate($bg, 128, 128, 128);
$limegreen = imagecolorallocate($bg, 194, 247, 0);

 

imagecolorallocate does not return anything the colors will be stored in memory. So you want be able to insert these colors into your form. Instead what I'd do is change your color selection to

<h4>Choose Color</h4>
<select name="color">
<option value="black">Black</option>
<option value="white>">White</option>
<option value="grey">Gray</option>
<option value="limegreen">Limegreen</option>
</select>

 

Now in your form processing code when you retrieve the colour you'd do

$black = imagecolorallocate($bg, 0, 0, 0);
$white = imagecolorallocate($bg, 255, 255, 255);
$grey = imagecolorallocate($bg, 128, 128, 128);
$limegreen = imagecolorallocate($bg, 194, 247, 0);

switch(strtolower($_POST['color']))
{
     case 'black':
     case 'white':
     case 'grey':
     case 'limegreen':
        $color = ${$_POST['color']};
     break;
}

 

Now $color will be defined with the color that was choosen.

[sac0o01]

Your suggestion worked like a charm.  Thank you ever so much!