PHPBuilder - Advanced Image Editing Under the GD Library Page 3

# Advanced Image Editing Under the GD Library - Page 3

by: Brandon "Mordecai" Cash
|
May 26, 2003

## Outlining

Outlining text is also fairly simple to do. If you think about it, an outline is just drawing the text left and right, above and below the main text, then drawing the main text over it. This theoretically works with every font because it moves one pixel at a time. To create an outline, you need only know the width of the outline, then write a for loop:
``` <?php function imagettftextoutline(&\$im,\$size,\$angle,\$x,\$y,&\$col,             &\$outlinecol,\$fontfile,\$text,\$width) {     // For every X pixel to the left and the right     for (\$xc=\$x-abs(\$width);\$xc<=\$x+abs(\$width);\$xc++) {          // For every Y pixel to the top and the bottom         for (\$yc=\$y-abs(\$width);\$yc<=\$y+abs(\$width);\$yc++) {              // Draw the text in the outline color             \$text1 = imagettftext(\$im,\$size,\$angle,\$xc,\$yc,\$outlinecol,\$fontfile,\$text);          }     }     // Draw the main text     \$text2 = imagettftext(\$im,\$size,\$angle,\$x,\$y,\$col,\$fontfile,\$text);  } ?> ```
By calling `imagettftextoutline(\$img,40,0,10,50,\$red,\$black,"arial.ttf","AaBbCcDd",3)`, we get an image like this:

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