从字符串中删除尾部反斜杠

Question

I would like to remove the trailing backslash from a string without using stripslashes() or str_replace() . Ideally I would be able to use rtrim() , but its something about the backslashes that has PHP freaking out.

$string = "This is my string\";

//iv'e tried with no success
$clean_string = rtrim($string, "\\");
$clean_string = rtrim($string, "\\\\");

Ideally the string would just read "This is my string" without the backslash at the end. I'm not entirely sure how to escape it properly, any help is much appreciated.

Answer 1

Try this:

 if(substr($string, -1) == "\"){ 
   echo substr($string, 0, -1);
 }

if condition checks whether the last character has slash or not.

Answer 2

You may try preg_replace :

$string = 'This is my string\\';
$clean_string = preg_replace('/(.+)(\\\\)$/', '${1}', $string);

The trailing slash will get removed if pattern is matched. You will get the same string otherwise.

Answer 3

This worked for me:

    if(substr($string, -1) == '\\')
    { 
        $string = substr($string, 0, -1);
    }