php正则表达式用目录分隔符替换路径中的“任何”斜杠

Question

I am trying to take paths like this:

some/path/here some\\other\\path

and replace each slash in the paths with PHP's DIRECTORY_SEPARATOR built in constant

I have this:

$subject = '/asdf';
$var = preg_replace('#\\\\#', DS, $subject);
print $var;

but this doesn't replace, it only add.

Thanks for any help.

Answer 1

Rather than using preg_replace , why not just use str_replace ?

$var = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $subject);

http://us3.php.net/manual/en/function.str-replace.php

Answer 2

因为你有 2 条斜线尝试#\\\\#

Answer 3

If you don't explicitly need regex, then this is the way:

$string = "some/path/here some\other\path";
$ds = DIRECTORY_SEPARATOR;
$result = str_replace(array("/","\\"),$ds,$string);
echo $result;

Outputs: some/path/here some/other/path

Answer 4

It should replace, not add. But try this:

preg_replace('/[\\]/', DS, $subject);

Should also work.