如何检查包含路径下是否存在文件? [英] How to check if a file exists under include path?

问题描述

您可以使用 get_include_path()

我想知道在不发出 PHP 错误的情况下检查是否可以包含文件的轻量级方法是什么.我正在使用 Yii 框架，我想在不发出 PHP 错误的情况下进行导入，但我失败了.

I am wondering what is the lightweight way to check if the file can be included without issuing a PHP error. I am using Yii framework and I want to an import without issuing PHP error, but I fail.

推荐答案

在 PHP 5.3.2 之前，您可以拆分路径并在循环中检查每个路径:

Before PHP 5.3.2 you can split the path and check each path in a loop:

$find = 'file.php'; //The file to find
$paths = explode(PATH_SEPARATOR, get_include_path());
$found = false;
foreach($paths as $p) {
  $fullname = $p.DIRECTORY_SEPARATOR.$find;
  if(is_file($fullname)) {
    $found = $fullname;
    break;
  }
}
//$found now contains the file to be included, or false if not found

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