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WordPress shortcode: Automatically insert image by file name

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  1. //The first thing to do is to paste this code on your functions.php file:
  2.  
  3. function image_shortcode($atts, $content = null) {
  4.     extract( shortcode_atts( array(
  5.     'name' => '',
  6.     'align' => 'right',
  7.     'ext' => 'png',
  8.     'path' => '/wp-content/uploads/',
  9.     'url' => ''
  10.     ), $atts ) );
  11.     $file=ABSPATH."$path$name.$ext";
  12.     if (file_exists($file)) {
  13.         $size=getimagesize($file);
  14.         if ($size!==false) $size=$size[3];
  15.         $output = "<img src='".get_option('siteurl')."$path$name.$ext' alt='$name' $size align='$align' class='align$align' />";
  16.         if ($url) $output = "<a href='$url' title='$name'>".$output.'</a>';
  17.         return $output;
  18.     }
  19.     else {
  20.         trigger_error("'$path$name.$ext' image not found", E_USER_WARNING);
  21.         return '';
  22.     }
  23. }
  24. add_shortcode('image','image_shortcode');
  25.  
  26. /*
  27. Once done, you can use the image shortcode in your posts. For example, the following line of code: [image name=cat]
  28. */

URL: http://www.wprecipes.com/wordpress-shortcode-automatically-insert-image-by-file-name

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