PHP Filters::once示例

示例#1

文件： FiltersTest.php 项目： alexpts/php-simple-events

 public function testOnceHandler()
 {
     $rawTitle = '  Hello world!!!  ';
     $this->filters->once('before_output_title', 'trim');
     $this->filters->filter('before_output_title', $rawTitle);
     $title = $this->filters->filter('before_output_title', $rawTitle);
     self::assertEquals($rawTitle, $title);
 }