PHP str_replace用破折号替换空格，但破折号太多

Question

I have this string here photo of the day - 2011 and I need to look like photo-of-the-day-2011 when I do a str_replace, I get this output:

photo-of-the-day---2011 what can I do to fix this?

Here is the code:

$albumName = 'photo of the day - 2011'; (this comes from a db and cannot change it)
$albumName = str_replace(" ", "-", $albumName);

Answer 1

You can use the more powerful preg_replace , instructing it to replace runs of dashes and/or spaces with a single dash:

$name = preg_replace('/[\s-]+/', '-', $name);

[\\s-]+ is a regular expression that matches "one or more of: whitespace and dashes".