Validating Directory Name

[saeedlink]

Hi guys,

I need directory validation code... means when you make a directory through code and check wheather the directory name is valid or not...

so guys can nebuddy help me how to write the code for validating directory name.

[laserlight]

Validating the name itself?

What characters do you allow for the directory name?
Do you mean path, or only the name?

[saeedlink]

Yes... validating the directory name itself.

like such characters:-
!@#$%^{&()+|\?/[]{}:;',.<>`~}

I want only alphanumeric characters. which is the valid name for directory..

[laserlight]

Then use
setlocate(LC_CTYPE, "C");
if (ctype_alnum($dirname))
//alphanumeric
else
//too bad

You will probably want the underscore character too, and maybe a few other, so:

if (preg_match("/^[a-zA-Z0-9_]+$/", $dirname) == 1)
	//ok
else
	//invalid

[saeedlink]

thnx you very much 🙂

what if I allow the space, - and _ characters in the directory name.. wat will be the regular expressions for that.

[laserlight]

Probably something like:

if (preg_match("/^[a-zA-Z0-9_\- ]+$/", $dirname) == 1)
    //ok
else
    //invalid

[saeedlink]

Originally posted by laserlight
Probably something like:

if (preg_match("/^[a-zA-Z0-9_\- ]+$/", $dirname) == 1)
    //ok
else
    //invalid

[/B]

I have tried this but it gimme such error

Warning: Compilation failed: range out of order in character class at offset 13 at line
if (preg_match("/^{[a-zA-Z0-9_- ]+$/", $dirname) == 1)}

[saeedlink]

its working now.
I have done a minor change in sequence of regular expression.

if (preg_match("/^[a-zA-Z0-9_- ]+$/", $txtFolder) == 1)

instead i have used

if (preg_match("/^[a-zA-Z0-9 _-]+$/", $txtFolder) == 1)

thanks buddy 🙂