How to use php?

[Anon]

I was given a script souce but I am new at php so I have no idea how to use it..can someone tell me?

Thank you...

It\'s for adding text to existing pic.
thanks

Saved as button.php
<?

// button.php4 - used to write text to a png

// header
Header(\"Content-Type: image/png\");

// set up image and colours
$im = ImageCreateFromPNG(\"images/button.png\");
$white = ImageColorAllocate($im, 0, 0,0);

// get font dimensiona
$font_height = ImageFontHeight(3);
$font_width = ImageFontWidth(3);

// get image dimensiona
$image_height = ImageSY($im);
$image_width = ImageSX($im);

// get string length
$length = $font_width * strlen($string);

// calculate start coordinates for string
$image_center_x = ($image_width/2)-($length/2);
$image_center_y = ($image_height/2)-($font_height/2);

// write string
ImageString($im, 5, $image_center_x, $image_center_y, $string, $white);

// output to browser
ImagePNG($im);
?>

to call the image
<img src=\"/button.php?string=<? echo $stringname; ?>

[Anon]

If the script is for example at
/path/to/script.php
then you need a PNG button image at
/path/to/images/button.png

Then $string is the string that you want in the image.

Diego