[SLOVED] DynamicDescription

<?php
/* Parameters */

/**
 * &maxWordCount
 * integer (25)
 * Sets the maximum word count of the description, default is 25 words
 */
$maxWordCount = (!empty($maxWordCount) && is_numeric($maxWordCount)) ? $maxWordCount : 25;

/**
 * &id
 * integer ($modx->documentObject['id'])
 * the id of the page you want a description for, defaults to the
 * current page.
 */
$id = (is_numeric($id) && !empty($id)) ? $id : $modx->documentObject['id'];

/**
 * &descriptionTV
 * string ('')
 * The name of a template variable you've set up for the description.
 * If you have a separate template variable set up for a description
 * you write in, set that with this parameter.  If the parameter ends
 * up being empty, it will default back to the content. If it is not
 * empty then it will display the value of the TV and stop processing.
 * In other words, it will print it just as you typed it.
 */
$descriptionTvArray = (!empty($descriptionTV)) ? $modx->getTemplateVarOutput($descriptionTV,$id) : '';
$descriptionTV = $descriptionTvArray[$descriptionTV];


/* Snippet Code */

/**
 * Function: getDynaDescription()
 * Returns:  A string of text ready to be placed in a meta description tag
 */
if (!function_exists(getDynaDescription)) {
  function getDynaDescription($text='',$excerpt_length=25)
  {
    global $modx;
    $text = str_replace(']]>', ']]>', $text);
    /* remove line breaks */
    $text = str_replace("\n",' ',$text);
    $text = str_replace("\r",' ',$text);
    /* remove entity chars */
    //$text = preg_replace('~&.+;~U',' ',$text);
    /* remove special MODx tags - chunks, snippets, etc.
     * If we don't do this they'll end up expanded in the description.
     */
    $text = $modx->stripTags($text);
    $words = preg_split ("/\s+/", $text,$excerpt_length+1);
    if (count($words) > $excerpt_length) {
      array_pop($words);
      array_push($words, '...');
      $text = implode(' ', $words);
    }
    return trim(stripslashes($text));
  }
}

if (!empty($descriptionTV)) {
  // if the $descriptionTV is not empty then we just print it with
  // no extra processing, it's up to you to manage your description
  echo $descriptionTV;
} else {
  // for everyone else that is lazy, just grab it from the content, yeah!
  $content = $modx->getDocument($id,'content');
  $content = $content['content'];
  echo getDynaDescription($content,$maxWordCount);
}

<?php
/**  getDynaDescription snippet
  *  Creates a full meta description tag or just the content part.
  */



/* Properties */

/**
 * &fullTag 
 * (int 1/0)
 * Set to one if you want a full meta tag returned,
 * set to 0 if you want just the content and will create the meta
  * tag yourself.
 */

/**
 * &maxWordCount
 * integer (25)
 * Sets the maximum word count of the description, default is 25 words
 */
$mwc = $scriptProperties['maxWordCount'];
$maxWordCount = (!empty($mwc) && is_numeric($mwc)) ? $mwc : 25;

/**
 * &id
 * integer
 * the id of the page you want a description for, defaults to the
 * current page.
 */
$pid = $scriptProperties['id'];
$pid = (is_numeric($pid) && !empty($pid)) ? $pid : $modx->resource->get('id');

/**
 * &descriptionTv
 * string ('')
 * The name of a template variable you've set up for the description.
 * If you have a separate template variable set up for a description
 * you write in, set that with this parameter.  If the parameter ends
 * up being empty, it will default back to the content. If it is not
 * empty then it will display the value of the TV and stop processing.
 * In other words, it will print it just as you typed it.
 */

if (!empty ($scriptProperties['descriptionTv'])) {
    
    $tv = $modx->getObject('modTemplateVar',array('name'=>$scriptProperties['descriptionTv']));
    
    $descriptionTv = $tv? $tv->getValue($pid) : '';
} else {
    $descriptionTv = '';
}

/**
 * Function: getDynaDescription()
 * Returns:  A string of text ready to be placed in a meta description tag
 */
if (!function_exists(getDynaDescription)) {
  function getDynaDescription($text='',$excerpt_length=25)
  {
    global $modx;
    $text = str_replace(']]>', ']]>', $text);
    /* remove line breaks */
    $text = str_replace("\n",' ',$text);
    $text = str_replace("\r",' ',$text);
    /* remove entity chars */
    //$text = preg_replace('~&.+;~U',' ',$text);
    /* remove special MODx tags - chunks, snippets, etc.
     * If we don't do this they'll end up expanded in the description.
     */
    $text = $modx->stripTags($text);
    $words = preg_split ("/\s+/", $text,$excerpt_length+1);
    if (count($words) > $excerpt_length) {
      array_pop($words);
      array_push($words, '...');
      $text = implode(' ', $words);
    }
    return trim(stripslashes($text));
  }
}

if (!empty($descriptionTv)) {
  // if the $descriptionTv is not empty, use it

  $output =  $descriptionTv;
} else {
  // for everyone else that is lazy, just grab it from the content, yeah!

   if ($pid == $modx->resource->get('id') ) { // don't pull another object unless we have to
       $content = $modx->resource->getContent();
   } else {
       $otherResource = $modx->getObject('modResource', $pid);
       $content = $otherResource->getContent();
   }

   $output =  getDynaDescription($content,$maxWordCount);

   
}

if ($fullTag == true) {
       $output = '<meta name="description" content="' . $output . '">' . "\n";
}


return $output;