php - IF 文件为 !empty ELSE

Question

所以，如果我有一个文件，当它为空时它需要一个特定的功能，但如果文件不是空的，它将继续显示（其他）其他东西。这是我目前使用的格式。我已经厌倦了这样做的几种不同方式和变体（从 PHP 手册示例到 StackOverFlow Q/A）。它正在做的是向我展示 else 而不是 if，因为文件实际上是空的......

<?
$file = 'config/config2.php';

if(!empty($file))
{
some code here!
}
else
{
some other code here!
}
?>

Answer 1

<?
$file = 'config/config2.php';

if(filesize($file)!=0)// NB:an empty 'looking' file could have a file size above 0
{
some code here!
}
else
{
some other code here!
}
?>

Answer 2

The problem seems to be that you are not actually loading the file before you check if it is empty.

You are only setting the variable $file to the string 'config/config2.php' not actually loading the file.

Before running your if statement do this:

$file = file_get_contents('config/config2.php');

or look into this: http://php.net/manual/en/function.fopen.php