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PHP return语句另类用法不止是在函数中
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PHP return语句另类用法不止是在函数中

Jun 13, 2016 am 09:25 AM
php return function usage statement

PHP return语句另类用法不止是在函数中

   分享下PHP return语句的另一个作用,在bbPress的代码中看到的一个奇葩使用方法。

  一直以为,return只能出现在函数中,直到看了bbPress的代码:

  

  require_once('./bb-load.php');

  bb_repermalink(); // The magic happens here.

  if ( $self ) {

  if ( strpos($self, '.php') !== false ) {

  require($self);

  } else {

  require( BB_PATH . 'profile-base.php' );

  } // www.jb51.net

  return;

  }

  难道 return 还能出现在函数之外?这在C语言是无法想象的。

  查了一下 PHP 手册:如果在一个函数中调用 return 语句,将立即结束此函数的执行并将它的参数作为函数的值返回。如果在全局范围中调用,则当前脚本文件中止运行。

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