php - 如何在类中获取方法代码

Question

如何获取方法的代码？ 我正在尝试这样的事情：：

//SiteController.php
class SiteController{

  public function actionIndex(){
      //bla bla..
  }

  public function actionCustomMethod(){
      if(1){
          echo '1';
      } else {
          echo '2';
      }
  }

}

//i need take code of "function actionCustomMethod(){ ... }"

preg_match('/function actionCustomMethod[^}]+/i', file_get_contents('SiteController.php'), $out);

//but the preg_match returns
/*
public function actionCustomMethod(){
    if(1){
      echo '1';
*/

我不知道如何使用嵌套大括号获取代码。有任何想法吗？

Answer 1

class SiteController{

  public function actionIndex(){
      //bla bla..
  }

  public function actionCustomMethod(){
      if(1){
         echo '1';
      } else {
          echo '2';
      }
  }

}
$res = new ReflectionMethod('SiteController', 'actionCustomMethod');
    $start = $res->getStartLine();
$end = $res->getEndLine();
$file = $res->getFileName();

echo 'get from '.$start.' to '.$end .' from file '.$file.'<br/>';
$lines = file($file);
$fct = '';
for($i=$start;$i<$end+1;$i++)
{
    $num_line = $i-1; // as 1st line is 0
    $fct .= $lines[$num_line];
}
echo '<pre>';
echo $fct;