php - Check if directory path ends with DIRECTORY_SEPARATOR -

In PHP, I am getting a string from the user for the local file directory $ path

I want to know if they have not added the previous slash (/) or I would like it for a cross platform so that I use PHP continuous DIRECTORY_SEPARATOR

Would like to do My unsuccessful attempts include preg_match such as

  preg_match ("/". DIRECTORY_SEPARATOR. "$ /", $ Path);  

I basically want a great way to test this if the string DIRECTORY_SEPARATOR .

To fix your regexp:

  preg_match (" / ".preg_quote (DIRECTORY_SEPARATOR." $ / ", $ Path);  

But there are simple ways to achieve your goal:

  rtrim ($ path, DIRECTORY_SEPARATOR) .DIRECTORY_SEPARATOR;