Snippets - Utilities

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NOTE: Most of the IM snippets have been tested on IM version 6.3.5 There may be some differences if you are using the code on other versions.

Writing IM code - Anthony 15/6/2008

Below are some different ways you can write the IM code. I always used to use the exec( ); with everything on the same line and still do for short code. But with complicated code it makes it easyer to read if you use the $cmd version.

  1. <?php
  2. $color = "red";
  3. $image = "rose:";
  4. $size = "70x46";
  5. $string = "A Rose by any Name";
  6. // Example 1 - Using concatenate
  7. exec("convert -background none -fill $color -gravity center " .
  8.             " -font Candice -size $size caption:\"$string\" " .
  9.             " \\( $image -negate -flip \\) +swap -composite " .
  10.             " output.gif" );
  11. // Example 2 - Using the imagemagick line continuation of \    
  12. // You need to escape the \ with another \ so it becomes \\    
  13. exec("convert -background none -fill \'$color\' -gravity center \\
  14.         -font Candice -size $size caption:\"$string\" \\
  15.         \\( $image -negate -flip \\) +swap -composite \\
  16.         output.gif" );
  17. // Example 3 - Writing the comand into a variable        
  18. $cmd = "-background none -fill $color -gravity center " .
  19.             " -font Candice -size $size caption:\"$string\" " .
  20.             " \( $image -negate -flip \) +swap -composite ";            
  21. exec("convert $cmd output.gif" );
  22. // Example 4 - One long line        
  23. exec("convert -background none -fill $color -gravity center -font Candice -size $size caption:\"$string\" \\( $image -negate -flip \\) +swap -composite output.gif" );
  24. ?>

For more examples and information check out the main Imagemagick section.

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