(PHP 3 >= 3.0.9, PHP 4, PHP 5)
imagepsbbox -- 
     Give the bounding box of a text rectangle using PostScript Type1
     fonts
    
Description
array 
imagepsbbox ( string text, int font, int size [, int space, int tightness, float angle] )
     size is expressed in pixels.
    
     space allows you to change the default
     value of a space in a font.  This amount is added to the normal
     value and can also be negative.
    
     tightness allows you to control the amount
     of white space between characters. This amount is added to the
     normal character width and can also be negative.
    
     angle is in degrees.
    
     Parameters space and
     tightness are expressed in character space
     units, where 1 unit is 1/1000th of an em-square.
    
     Parameters space,
     tightness, and angle
     are optional.
    
     The bounding box is calculated using information available from
     character metrics, and unfortunately tends to differ slightly
     from the results achieved by actually rasterizing the text. If
     the angle is 0 degrees, you can expect the text to need 1 pixel
     more to every direction.
    
Note: This function is only available 
if PHP is compiled using --with-t1lib[=DIR].
     This function returns an array containing the following elements:
     
    
     See also imagepstext().