Regex for file names, with no url?

Question

How can I write a regex which will replace any file name, with it's folder path, but wouldn't match url? and wouldn't match in url? For example it should match:

/images/something.png
content/scripts/myscript.js
image.gif
/1.jpg

But should not match:

http://www.google.com/images/something.png
www.google.com/scripts/myscript.js
http://site.com/?img=/image.png
http://site.com/?img=/scripts/somescript.js

Thanks...

Community · Accepted Answer · 2017-05-23 10:33:11Z

5

I think this is imposible since this is also a valid directory name?

www.google.com/scripts/myscript.js

I guess only http:// could be filtered.

I don't know what you're planning to do, but maybe you could use file_exists() to check if it's a file on ur filesystem.

this question tells us how to filter a url with regex:

$text = preg_replace("
  #((http|https|ftp)://(\S*?\.\S*?))(\s|\;|\)|\]|\[|\{|\}|,|\"|'|:|\<|$|\.\s)#ie",
  "'<a href=\"$1\" target=\"_blank\">$3</a>$4'",
  $text
);

but it also states that you actually should use the filter_var() function

var_dump(filter_var('example.com', FILTER_VALIDATE_URL);

edited May 23, 2017 at 10:33

CommunityBot

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answered Nov 2, 2009 at 9:24

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3 Comments

Alon Gubkin Over a year ago

well say it's not a vaild directory name.

Bart Kiers Over a year ago

Alon, you'll first have to provide a definition of an invalid directory is (in your book). We can't read your mind. Is a directory invalid when it has two .'s in it? Is it invalid when it ends with .com? Etc. etc.

Piskvor left the building Over a year ago

www.google.com is a valid directory name on Windows 95 (!) and newer, and on all modern Unix-y systems (OS X, Linux) also.

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