EXPLODE help

[seanl]

I am having a problem with my use of explode.

I am trying to turn a number of page titles from the form

This is my title into the form This-is-my-title

This is how I have started

$string = 'This is my title';

$words = explode(" ", $string);

$newstring = '';

foreach ($words as $word) {
    $newstring .= "{$word}-";
}

What I get is

This-is-my-title-

Does anyone know of a way to not add that last hyphen?

Thanks for looking

[dagon]

$newstring=substr($newstring,0,-1);

removes the last char, this is one of many ways

[seanl]

Thanks. Perfect.

[djjjozsi]

version1:

echo str_replace(" ","-" , $title);

version2:

$title=explode(" ", $string );
print implode("-",$title);