Problem with image and text

[chrisdee]

I wonder how I can pass a variable with text into the
image below. Iv tried to write a script below but it doesnt
register the text. Any suggestion.

<?php 

$img            = ImageCreate(300, 100); 
$color_bg       = ImageColorAllocate($img, 204, 204, 150); 
$color_text     = ImageColorAllocate($img, 0, 0, 0); 

$string = $_POST['string']; 

header('Content-type: image/png'); 
ImagePNG($img); 
imagedestroy($img); 

?> 


<?php 
if(empty($_POST)) { 
 echo "<form method=post action=$_SERVER[PHP_SELF]>"; 
 echo "Enter Name : <input type=text name=string><br>"; 
 echo "<input type=submit value=submit><br>"; 
 echo "</form>"; 
} 
else { 
 ImageFilledRectangle($img,0, 0, 600, 300, $color_bg); 
 ImageString($img, 5, 30, 10, $string, $color_text); 
} 
?>

[brandtj]

I would guess that the majority of the problem falls in the order of your code... try this:

<?php 

if(empty($_POST)) { 
echo "<form method=\"post\" action=\"$_SERVER[PHP_SELF]\">"; 
echo "Enter Name : <input type=\"text\" name=\"string\"><br>"; 
echo "<input type=\"submit\" value=\"submit\"><br>"; 
echo "</form>"; 
} 
else { 
$img            = ImageCreate(300, 100); 
$color_bg       = ImageColorAllocate($img, 204, 204, 150); 
$color_text     = ImageColorAllocate($img, 0, 0, 0); 

$string = $_POST['string']; 

ImageFilledRectangle($img,0, 0, 600, 300, $color_bg); 
ImageString($img, 5, 30, 10, $string, $color_text); 

header('Content-type: image/png'); 
ImagePNG($img); 
imagedestroy($img); 
} 

?> 

[chrisdee]

Thank you very much brandtj. It now works just like I wanted it to.
🙂)

[chrisdee]

Hello. Here I am again. Im trying to rewrite the script
so it will let the user choose wich color the text should
get form a drop down menu, but I cant get this to work.

Would really apreciate some help on this.
Below is the script so far.

<?php 
if(!empty($_POST)) { 

 $string = escapeshellcmd($_POST['string']); 
 $color = escapeshellcmd($_POST['color']); 

 $im = imagecreate (400, 50); 
 $bg = imagecolorallocate ( $im, 0, 0, 0 ); 
 $tc = imagecolorallocate ( $im, $color, $color, $color); 

 imagefilledrectangle ( $im, 0, 0, 600, 300, $bg ); 
 imagestring ( $im, 10, 30, 10, $string, $tc ); 

 header ( 'Content-Type: image/png' ); 
 imagepng ( $im ); 
 imagedestroy ( $im ); 
} 
else { 
 echo "<form method=post action=" . $_SERVER['PHP_SELF'] . ">"; 
 echo "<br>Write in some text : "; 
 echo "<input type=text name=string><br>"; 
 echo "Choose color: "; 

 echo "<select name=tc>"; 
  echo "<option value='255,0,0'>Red</option>"; 
  echo "<option value='0,0,255'>Blue</option>"; 
  echo "<option value='0,255,0'>Green</option>"; 
 echo "</select><br>"; 

 echo "<input type=submit value=submit><br>"; 
 echo "</form>"; 
} 
?> 

[Houdini]

I believe this

$color = escapeshellcmd($_POST['color']);

should be this

$color = escapeshellcmd($_POST['tc']);

[chrisdee]

Thank you for your suggestion, but it still doesnt work.
Hmm..

[toxic_brain]

 echo "<option value='255,0,0'>Red</option>";

will execute as

$tc = imagecolorallocate ( $im, '255,0,0', '255,0,0', '255,0,0');

so u may change this to,

$color = escapeshellcmd($_POST['tc']);
$colors = explode( ',' , $color) ;
.....
......
$tc = imagecolorallocate ( $im, $colors[0], $colors[1], $colors[2]);