(PHP 3 >= 3.0.1, PHP 4, PHP 5)
imagettfbbox -- Give the bounding box of a text using TrueType fonts
Description
array 
imagettfbbox ( float size, float angle, string fontfile, string text )
     This function calculates and returns the bounding box in pixels
     for a TrueType text.
     
- size
- The font size in pixels. 
- angle
- 
       Angle in degrees in which text will be
       measured.
       
- fontfile
- 
       The name of the TrueType font file (can be a URL). Depending on
       which version of the GD library that PHP is using, it may attempt to
       search for files that do not begin with a leading '/' by appending
       '.ttf' to the filename and searching along a library-defined font path.
       
- text
- The string to be measured. 
 returns an array with 8
     elements representing four points making the bounding box of the
     text:
     
     The points are relative to the 
text
     regardless of the angle, so "upper left" means in the top
     left-hand corner seeing the text horizontally.
    
     This function requires both the GD library and the FreeType
     library.
    
     See also imagettftext().