(PHP 4, PHP 5, PHP 7)
imagestringup — Draw a string vertically
$image
   , int $font
   , int $x
   , int $y
   , string $string
   , int $color
   )
   Draws a string vertically at the given
   coordinates.
  
imageAn image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
fontCan be 1, 2, 3, 4, 5 for built-in fonts in latin2 encoding (where higher numbers corresponding to larger fonts) or any of your own font identifiers registered with imageloadfont().
xx-coordinate of the bottom left corner.
yy-coordinate of the bottom left corner.
stringThe string to be written.
colorA color identifier created with imagecolorallocate().
   Returns TRUE on success or FALSE on failure.
  
Example #1 imagestringup() example
<?php
// create a 100*100 image
$im = imagecreatetruecolor(100, 100);
// Write the text
$textcolor = imagecolorallocate($im, 0xFF, 0xFF, 0xFF);
imagestringup($im, 3, 40, 80, 'gd library', $textcolor);
// Save the image
imagepng($im, './stringup.png');
imagedestroy($im);
?>
The above example will output something similar to:
