PHP wkhtmltopdf class

WkPdf.class.php

<?php
/**
 *  Örnek Kullanım
 *
$detay="<h1>Test</h1>";
$dosya="test.pdf";

$wkPdf= new WkPdf();
$wkPdf->setWkPath('/usr/bin/wkhtmltopdf');
$wkPdf->setHtml($detay);
$wkPdf->setFile($dosya);
// Debian İçin : $wkPdf->setCommand('xvfb-run -a -s "-screen 0 640x480x16" -f "/tmp/" %s -q - -');
$wkPdf->setCommand('%s -q - -');
$wkPdf->init();
 *
 *
 *  Tarayıcıya Çıktı Gönderir
$wkPdf->getPdf();
 *
 * Dosyayı Kaydeder
$wkPdf->setFilePath('/var/www/ff.com/public_html/pdf/');
$wkPdf->saveFile(); /var/www/ff.com/public_html/pdf/test.pdf şeklinde Kaydeder.
 *
 */

class WkPdfException extends Exception
{

    public function show()
    {
        echo "<pre>";
        echo $this->getMessage();
        echo "<br>
        File:";
        echo $this->getFile();
        echo "<br>
        Line:";
        echo $this->getLine();
        echo "<br>
        TraceAsString:<br><pre>";
        echo $this->getTraceAsString();
        echo "</pre>";
    }
}


class WkPdf{

    public $wkhtmltopdf_path='/usr/bin/wkhtmltopdf';
    //Debian için
    // wkhtmltopdf: cannot connect to X server hatası verirse xvfb kurmak gerekir -> apt-get install xvfb
    // xvfb eğer sleep not found hatası verirse -> ln -s /bin/sleep /usr/bin/sleep
    //public $command='xvfb-run -a -s "-screen 0 640x480x16" -f "/tmp/" %s -q - -';
    public $command='%s -q - -';
    public $html;
    public $file;
    public $file_path;
    public $pdf_source;
    public $errors;
    public $return_values;



    public function init(){


        try{
            $this->_init();
        }catch(WkPdfException $e){
            echo $e->show();
            exit;
        }


        try{
            $this->_initCommand();
        }catch(WkPdfException $e){
            echo $e->show();
            exit;
        }




    }

    public function _init(){
        if($this->html==NULL){
            throw new WkPdfException("Lütfen Dönüştürmek İstediğiniz Html Kodunu Belirtin 'setHtml()'");
        }
        if($this->file==NULL){
            throw new WkPdfException("Lütfen Oluşuturulacak Dosya Adını Belirtin 'setFile()'");
        }
        if(file_exists($this->wkhtmltopdf_path)===FALSE){
            throw new WkPdfException($this->wkhtmltopdf_path." Bulunamadı Değil");
        }

    }


    function _initCommand()
    {
        // https://gist.github.com/1965886#file_generate_pdf.php
        // Run wkhtmltopdf
        $descriptorspec = array(
            0 => array('pipe', 'r'), // stdin
            1 => array('pipe', 'w'), // stdout
            2 => array('pipe', 'w'), // stderr
            // Oluşacak Hataları Dosyayada Yazabiliriz.
            // 2 => array("file", "/tmp/error-output.txt", "a") // stderr is a file to write to
        );

        $process = proc_open(sprintf($this->command,$this->wkhtmltopdf_path), $descriptorspec, $pipes);

        if (is_resource($process)===FALSE) {
            throw new WkPdfException("Process Başlatılamadı");
        }

        // Send the HTML on stdin
        fwrite($pipes[0], $this->html);
        fclose($pipes[0]);

        // Read the outputs
        $this->pdf_source = stream_get_contents($pipes[1]);
        $this->errors = stream_get_contents($pipes[2]);

        // Close the process
        fclose($pipes[1]);
        $this->return_values = proc_close($process);
        if ($this->errors!=NULL) {
            throw new WkPdfException("Pdf Oluşturulurken Hata Oluştu Hata Mesajı: ".nl2br(htmlspecialchars($this->errors)));
        }
    }

    public function getPdf(){
        if (ini_get('zlib.output_compression'))
            ini_set('zlib.output_compression', 'Off');
        header('Content-Type: application/pdf');
        header('Expires: Thu, 19 Nov 1981 08:52:00 GMT');
        header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
        header("Cache-Control: private", false); // required for certain browsers
        header("Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
        header("Pragma: no-cache");
        header("Content-Disposition: attachment; filename=\"" . basename($this->file) . "\";");
        header('Content-Transfer-Encoding: binary');
        //header("Content-Type:application/octet-stream");
        echo $this->pdf_source;
    }


    public function savePdf(){
        try{
            $this->_checkFilePath();
        }catch(WkPdfException $e){
            echo $e->show();
            exit;
        }

        try{
            $this->_savePdf();
        }catch(WkPdfException $e){
            echo $e->show();
            exit;
        }
    }

    public function _savePdf(){
        if(file_put_contents($this->file_path.$this->file,$this->pdf_source)===FALSE){
            throw new WkPdfException($this->file_path.$this->file." Dosyasına Pdf Yazılırken Hata Oluştu");
        }

    }

    public function _checkFilePath(){
        if($this->file_path===NULL){
            throw new WkPdfException("Lütfen Pdf dosyasının oluşturulacağı dizini belirtin 'setFilePath()'");
        }
        if(is_writable($this->file_path)===FALSE){
            throw new WkPdfException($this->file_path." Yazılabilinir Değil setFilePath()");
        }
    }



    public function setHtml($html=NULL){
        $this->html=$html;
    }


    public function setFile($file=NULL){
        $this->file=$file;
    }

    public function setFilePath($file_path=NULL){
        $this->file_path=$file_path;
    }

    public function setWkPath($f){
        try{
            $this->_setWkPath($f);
        }catch(WkPdfException $e){
            echo $e->show();
            exit;
        }
        $this->wkhtmltopdf_path=$f;
    }

    public function _setWkPath($f){
        if(file_exists($f)===FALSE){
            throw new WkPdfException($f." Bulunamadı");
        }
    }

    public function setCommand($command){
        $this->command=$command;
    }

}