Monitoramento de Diário Oficial - Extrair e Manipular Conteúdo de PDF

Se você já leu e salvou no banco, pra que voltar para o PDF?

Guardei o arquivo pdf, mas não consegui extrair o texto dele.

Achei esse código, mas não estou conseguindo executar e ter o resultado que promete. Alguém pode ajudar?

/**
* Copyright (c) 2011 Pat Fox
* Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL (http://www.gnu.org/licenses/gpl.html) licenses
* http://code.google.com/p/ssearch
*/

/**
* A class for stripping text content from a PDF file
*
* Originally based on code found at //http://community.livejournal.com/php/295413.html by Jonathan Beckett, 2005-05-02
*/
class LibPDFToText{

/**
* Convert a file
*
* @param string $file_name
*

 * @return string The content
 */
	public function ConvertFile( $file_name ){
 return $this->Convert( file_get_contents( $file_name ) );
	}

	/**
 * Convert a string
 *
 * @param string $data The contents of a PDF file
 *
 * @return string The content
 */
	public function Convert( $data ){
 // grab objects and then grab their contents (chunks)
 $a_obj = $this->getDataArray($data,"obj","endobj");
 $a_chunks = array();
 $j = 0;
 foreach($a_obj as $obj){
 $a_filter = $this->getDataArray($obj,"<<",">>");
 if (count($a_filter)){
 $j++;
 $a_chunks[$j]["filter"] = $a_filter[0];

 $a_data = $this->getDataArray($obj,"stream","endstream");
 if (count($a_data)){
 $a_chunks[$j]["data"] = substr($a_data[0],strlen("stream\r\n"),strlen($a_data[0])-strlen("stream\r\n")-strlen("endstream"));
 }
 }
 }

 // decode the chunks
 $result_data = '';
 foreach($a_chunks as $chunk){

 // look at each chunk and decide how to decode it - by looking at the contents of the filter
 $a_filter = explode("/",$chunk["filter"]);

 if (isset($chunk["data"]) && $chunk["data"]!=""){
 // look at the filter to find out which encoding has been used
 if (strpos($chunk["filter"],"FlateDecode")!==false && strpos($chunk["filter"],"Metadata") === false && strpos($chunk["filter"],"Image") === false ){
 $data =@ gzuncompress($chunk["data"]);
 if (trim($data)!=""){
 $result_data .= $this->ps2txt($data);
 } else {

 //$result_data .= "x";
 }
 }
 }
 }

 return $result_data;

	}

	/**
 * Get a list of object from the file
 */
	private function getDataArray($data,$start_word,$end_word){

 $start = 0;
 $end = 0;
 $a_result = array();

 while ($start!==false && $end!==false){
 $start = strpos($data,$start_word,$end);
 if ($start!==false){
 $end = strpos($data,$end_word,$start);
 if ($end!==false){
 // data is between start and end
 $a_result[] = substr($data,$start,$end-$start+strlen($end_word));
 }
 }
 }
 return $a_result;
	}

	private function ps2txt($ps_data){
 $result = "";
 $a_data = $this->getDataArray($ps_data,"[","]");
 if (is_array($a_data)){
 foreach ($a_data as $ps_text){
 $a_text = $this->getDataArray($ps_text,"(",")");
 if (is_array($a_text)){
 foreach ($a_text as $text){
 // $result .= substr($text,1,strlen($text)-2);
 $text = substr($text,1,strlen($text)-2);
 if( !is_numeric( $text ) ){
 @$result .= iconv(mb_detect_encoding($text), 'UTF-8//IGNORE', $text) . "[[return]]";
 }
 }
 }
 }
 } else {
 // the data may just be in raw format (outside of [] tags)
 $a_text = $this->getDataArray($ps_data,"(",")");
 if (is_array($a_text)){
 foreach ($a_text as $text){
 // $result .= substr($text,1,strlen($text)-2);
 $text = substr($text,1,strlen($text)-2);
 if( !is_numeric( $text ) ){
 @$result .= iconv(mb_detect_encoding($text), 'UTF-8//IGNORE', $text) . "[[return]]";
 }
 }
 }
 }

 $result = str_replace("[[return]] [[return]] [[return]]", "\n", $result );
 $result = str_replace("[[return]]", "", $result );
 return trim( $result );
	}
}

?>