_php based on the graphic buttons created by text passing

A graphical button created by passing text, please read the text in English to explain
<?php Header ("Content-type:image/gif"); Info for the browser
/* PHP3 Button Generator, (c) by Izzysoft (izzysoft@buntspecht.de)
* LICENSE:GPL (and it would is nice to drop me a
* Useful-if use it. And, of course, I am very interested in
* Enhancements you made to the script!
*
* purpose:generate buttons with text passed by parameter.
*
* Possible parameters to the script:
*button-input gif image. Just the part of the filename before the dot.
*the specified image file is expected in the same directory
*as this script resides in.
*font-font to-use (1-5) 1 is very small, 3 medium, 5 normal size.
*the script would automatically use a smaller the font if text is
*too long for selected size.) Default:5
*text-the text to is put on the button. would be centered.
*textcolor-color for the letters. Default:white.
*in This example code only blue, white and black are defined;
*but You can add custom colors easily.
*width,heigth-width and Heigth of the button. Useful only if Target
*button should have different size than source image.
*
* Example for usage:
*
* 'll look for yellow.gif and put the string ' Example ' on it.
*
* I use to have three buttons I normally generate (one displays selected
* Item, one is for mouseover (), and one is the default button). The source
* Images are yellow.gif, white.gif and blue.gif-so my script assumes
* Blue.gif as Default if "button=" not specified-you could wish to change
* This below, it's easy;)
*/
===========================[Check fo
R parameters and/or set defaults]===
if (($font = = "") | | ($font > 5) | | ($font < 1)) {$font = 5;}
if ($text = = "") {$text = "moin!";} Button text
if ($textcolor = = "") {//color for the letters
Switch ($button) {
Case "Yellow":
Case "White":
$textcolor = "BLACK";
Break
Default
if ($button = = "") {$button = "blue";}
$textcolor = "White";
Break
}
}//TextColor end
$im _info = getimagesize ("$button. gif"); Button size
if ($width = = "") {
if ($im _info = "") {
$buttonwidth = 125;
} else {
$buttonwidth = "$im _info[0]";
}
} else {
$buttonwidth = $width;
}
if ($heigth = = "") {
if ($im _info = "") {
$buttonheigth = 30;
} else {
$buttonheigth = "$im _info[1]";
}
} else {
$buttonheigth = $heigth;
}
$vmidth = Ceil ($buttonheigth/2);
// =====================================
===[now lets define some colors]===

$white = "255,255,255";
$black = "0,0,0";
$blue = "0x2c,0c6d,0xaf";
// =====================================
=============[Build Color Array]===
Now we put the needed color in an A
Rray (if e.g. "$textcolor =white",
The array $textcolor _array represents
"White")
$textcolor _array = Explode (",", $ $textcolor);
=======================[Calculate PO
Sition of the text on the button]===
do {
$textwidth = strlen ($text) * Imagefontwidth ($font);
$x = ($buttonwidth-$textwidth)/2; $x = Ceil ($x);
$y = $vmidth-(imagefontheight ($font)/2);
$font--;
while (($x < 0) && ($font > 0)); $font + +;
// =====================================
======[Now we create the button]===
if (Isset ($width) | | | isset ($HEIGTH)) {//size change expected?
$ima = Imagecreatefromgif ("$button. gif");//Open Input GIF
$im = Imagecreate ($buttonwidth, $buttonheigth); Create img in desired size
$UGLYBG = Imagecolorallocate ($im, 0xf4,0xb2,0xe5);
Imagerectangle ($im, 0,0, $buttonwidth, $buttonheigth, $UGLYBG);
$dummy = imagecopyresized ($im, $ima, 0,0,0,0, $buttonwidth, $buttonheigth, $im _info[0], $im _info[1]);
if ($dummy = = "") {
Imagedestroy ($im); If it didn ' t work, create default below instead
} else {;}
Imagedestroy ($ima);
Imagecolortransparent ($im, $UGLYBG);
} else {
$im = Imagecreatefromgif ("$button. gif");//Open Input GIF
}
if ($im = = "") {$im = Imagecreate ($buttonwidth, $buttonheigth); If input gif not found,
$rblue = Imagecolorallocate ($im, 0X2C,0X6D,0XAF);//Create a default box
Imagerectangle ($im, 0,0,200,100, $rblue);
}
$color = Imagecolorallocate ($im, $textcolor _array[0], $textcolor _array[1], $textcolor _array[2]); Allocate the color
Imagestring ($im, $font, $x, $y, "$text", $color); Put the text on it
Imagegif ($im);/Send button to browser
Imagedestroy ($im)//Free The Used memory
    ?>