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Wordpress: Text Excerpts with PHP

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Create excerpts from text block from your wordpress content and add links page / post from the guid.

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  1. /**
  2. * usage: 
  3. * $txt = new($post->post_content, 50, 'Read in full', '<span class="readmore">', '</span>', '<a><span>');
  4. * echo $text->createExcerpt(); 
  5. *
  6. */
  7.  
  8.  
  9. class text{
  10.  
  11. 	public $text;
  12. 	public $length;
  13. 	public $allowedTags;
  14. 	public $readMoreText;
  15.  
  16. 	//create internal variables from those passed to the class
  17. 	function __construct($text = '', 
  18. 	$length = 50, 
  19. 	$readMoreText = 'Read In Full...', 
  20. 	$before = '',
  21. 	$after = '',
  22. 	$allowedTags = '<a>') {
  23.  
  24. 			$this->text  = $text; 
  25. 			$this->length = $length; 
  26. 			$this->readMoreText = $readMoreText;
  27. 			$this->before = $before;
  28. 			$this->after = $after;
  29. 			$this->allowedTags = $allowedTags;	
  30.  
  31. 		}
  32.  
  33. 		//shorten text to required length
  34. 		public function shortenText() {			
  35. 			//explode the string into an array of the length we want
  36. 			if (count(explode(' ', $this->text)) > $this->length)
  37. 			{
  38. 				$textArray = explode(' ', $this->text, $this->length);
  39. 				//remove the excess string from the end of the array
  40. 				array_pop($textArray);
  41. 				//create a string from the array
  42. 				$textString = implode(' ', $textArray);
  43. 				//cleaning up
  44. 				unset($textArray);
  45. 				//return
  46. 				return $textString . '... ';
  47. 			}
  48. 			else
  49. 			{
  50. 				return $this->text;	
  51. 			}
  52. 		}
  53.  
  54. 		//remove tags and other.
  55. 		public function cleanText($text){
  56. 			//strip the text of html tags, except those we want
  57. 			$strippedText = strip_tags($text, $this->allowedTags);
  58. 			//remove [] and their content
  59. 			$strippedText = preg_replace('`\[[^\]]*\]`','',$strippedText);
  60. 			//return
  61. 			return $strippedText;			
  62. 		}
  63.  
  64. 		//create output
  65. 		public function createExcerpt(){
  66. 			global $post;
  67.  
  68.  
  69. 				//create output
  70. 				$output = '';
  71. 				$output .= $this->cleanText($this->shortenText());
  72. 				if($this->readMoreText !== '') 
  73. 				{				
  74. 					$output .= $this->before;
  75. 					$output .= '  <a href="'.  $post->guid .'" title="'. $this->readMoreText . ': '. $post->post_title .'">'. $this->readMoreText . '</a>';
  76. 					$output .= $this->after;
  77. 				}
  78. 			return $output;	
  79. 		}
  80.  
  81. }//end class//

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