mpdf error - preg_replace()：不推荐使用/e修饰符，而是使用preg_replace_callback

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   function save_pdf($std_id)
     $data['section1_report']= $this->common_model->get_details('tbl_section1',array('id'=>$std_id));
     $html = $this->load->view('reports/section1',$data,true);
      // print_r($html);exit; 
     $this->load->library('pdf');
     $pdf = $this->pdf->load();
     $pdf->WriteHTML($html);
     $pdf->Output();
}

 <?php if (!defined('BASEPATH')) exit('No direct script access allowed');
   class pdf {    
      function pdf()
         $CI = & get_instance();
         log_message('Debug', 'mPDF class is loaded.');
     function load($param=NULL)
         include_once APPPATH.'/mpdf/mpdf.php';         
         if ($params == NULL)
             $param = '"en-GB-x","A4","","",10,10,10,10,6,3';         
       return new mPDF($param);
  }

$str = preg_replace_callback('/\&\#([0-9]+)\;/m', function($m) use ($lo){return code2utf($m[1],$lo); }, $str);
$str = preg_replace_callback('/\&\#x([0-9a-fA-F]+)\;/m', function($m) use ($lo){return codeHex2utf($m[1],$lo);}, $str);

   $str = preg_replace('/\&\#([0-9]+)\;/me', "code2utf('\\1',{$lo})",$str);
   $str = preg_replace('/\&\#x([0-9a-fA-F]+)\;/me', "codeHex2utf('\\1',{$lo})",$str);

   $str = preg_replace_callback('/\&\#([0-9]+)\;/m', function($m) use ($lo){return code2utf($m[1],$lo); }, $str);
   $str = preg_replace_callback('/\&\#x([0-9a-fA-F]+)\;/m', function($m) use ($lo){return codeHex2utf($m[1],$lo);}, $str);

$str = preg_replace('/\&\#([0-9]+)\;/me', "code2utf('\\1',{$lo})",$str);
$str = preg_replace('/\&\#x([0-9a-fA-F]+)\;/me', "codeHex2utf('\\1',{$lo})",$str);
// Remove above and add below code in includes/functions.php
$str = preg_replace_callback('/\&\#([0-9]+)\;/m', function($m) use ($lo){return code2utf($m[1],$lo); }, $str);
$str = preg_replace_callback('/\&\#x([0-9a-fA-F]+)\;/m', function($m) use ($lo){return codeHex2utf($m[1],$lo);}, $str);
// Also comment below line in mpdf.php
$html = preg_replace('/\{DATE\s+(.*?)\}/e',"date('\\1')",$html );

$str = preg_replace('/\&\#([0-9]+)\;/me', "code2utf('\\1',{$lo})",$str);
$str = preg_replace('/\&\#x([0-9a-fA-F]+)\;/me', "codeHex2utf('\\1',{$lo})",$str);

mpdf error - preg_replace()：不推荐使用/e修饰符，而是使用preg_replace_callback

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