The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.
One of a set of tools we're offering as a way of saying thank you for being a part of the community.
preg_replace with dash
Hi,
Just a quick question. I'm wondering if this code:
will replace all instances of any character that is a letter or number with the dash. It's supposed to create user friendly post slugs from title string to use within URLs.
Thanks,
Victor
Just a quick question. I'm wondering if this code:
function create_slug($string){
$slug=preg_replace('/[^A-Za-z0-9-]+/', '-', $string);
return $slug;
}
will replace all instances of any character that is a letter or number with the dash. It's supposed to create user friendly post slugs from title string to use within URLs.
Thanks,
Victor
Who is Participating?
LVL 34
The pattern you posted '/[^A-Za-z0-9-]+/' will replace all characters that are NOT 0-9, A-Z, a-z or a dash
Hai,
Just a slight modification there in your function
function create_slug($string){
$slug=preg_replace('/[^A-Z
return $slug;
}
Just a slight modification there in your function
function create_slug($string){
$slug=preg_replace('/[^A-Z
return $slug;
}
[^ ... ]
Means any character not in this character set. Remove the chevron to make it any character in this set.
P.S.
The chevron only makes it a "not" when it is listed as the first character in the character set. Listed anywhere else, it is a literal character.
Examples:
The chevron only makes it a "not" when it is listed as the first character in the character set. Listed anywhere else, it is a literal character.
Examples:
[^abc] - Any character NOT a, b, or c
[abc] - a, b, or c
[abc^] - a, b, c, or chevron
[^abc^] - Any character NOT a, b, c, or chevron
[^^] - Any character NOT a chevron
"....Means any character not in this character set. Remove the chevron to make it any character in this set....."
Why didn't they use ! to mean NOT like many programming languages..... oh well
@vkimura2007 - I can understand your confusion look at this
/^[^a-z]+[a-z]*$/
That means "any string starting (^) with characters that are NOT a-z ([^a-z]) ..... " etc. It's unfortunate that regex syntax looks like the leftovers from the Scrabble box....
Why didn't they use ! to mean NOT like many programming languages..... oh well
@vkimura2007 - I can understand your confusion look at this
/^[^a-z]+[a-z]*$/
That means "any string starting (^) with characters that are NOT a-z ([^a-z]) ..... " etc. It's unfortunate that regex syntax looks like the leftovers from the Scrabble box....
Question has a verified solution.
Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.
Have a better answer? Share it in a comment.
All Courses
From novice to tech pro — start learning today.
-
Course of the Month9 days, 5 hours left to enrollMonitoring and Operating a Private Cloud with System Center 2012 R2 273 lessons
