Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.php > #7076

Re: How expensive is glob'ing a dir and including all the files?

Show all headers | View raw

On 9/15/2012 2:08 AM, Anders Wegge Keller wrote:
> "J. Frank Parnell" <juglesh@gmail.com> writes:
>
>> So, my question is, am I saving a significant amount of ram/cpu/time
>> by keeping this cache of filenames or should I just glob the dir and
>> include what's in there everytime?
>
>   You may want to consider autoloading classes as needed. See
> http://php.net/manual/en/language.oop5.autoload.php
>
>   This approach is of course dependent on using PHP5 *and* having an
> OO design.
>

Additionally, you're never sure which module you got.  All kinds of 
hard-to-diagnose things can happen when someone uploads a module of the 
same name but earlier in the search path.  You'll be trying to debug one 
module while the system is using an entirely different module.

Plus the extra overhead of searching for the module, of course.

This is not a feature I recommend.  It can cause many problems, and good 
programming techniques render it pretty much unnecessary.

-- 
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================

Back to comp.lang.php | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

How expensive is glob'ing a dir and including all the files? "J. Frank Parnell" <juglesh@gmail.com> - 2012-09-14 12:35 -0700
  Re: How expensive is glob'ing a dir and including all the files? Eli the Bearded <*@eli.users.panix.com> - 2012-09-14 19:41 +0000
    Re: How expensive is glob'ing a dir and including all the files? "J. Frank Parnell" <juglesh@gmail.com> - 2012-09-14 15:24 -0700
      Re: How expensive is glob'ing a dir and including all the files? Jerry Stuckle <jstucklex@attglobal.net> - 2012-09-14 19:24 -0400
        Re: How expensive is glob'ing a dir and including all the files? Michael Fesser <netizen@gmx.de> - 2012-09-15 01:43 +0200
          Re: How expensive is glob'ing a dir and including all the files? Jerry Stuckle <jstucklex@attglobal.net> - 2012-09-14 21:45 -0400
            Re: How expensive is glob'ing a dir and including all the files? "J. Frank Parnell" <juglesh@gmail.com> - 2012-09-16 10:50 -0700
              Re: How expensive is glob'ing a dir and including all the files? Jerry Stuckle <jstucklex@attglobal.net> - 2012-09-16 17:45 -0400
                Re: How expensive is glob'ing a dir and including all the files? "J. Frank Parnell" <juglesh@gmail.com> - 2012-09-16 16:00 -0700
                Re: How expensive is glob'ing a dir and including all the files? Jerry Stuckle <jstucklex@attglobal.net> - 2012-09-16 20:17 -0400
  Re: How expensive is glob'ing a dir and including all the files? Salvatore <sal@yojimbo.hack.invalid> - 2012-09-14 19:44 +0000
  Re: How expensive is glob'ing a dir and including all the files? Anders Wegge Keller <wegge@wegge.dk> - 2012-09-15 08:08 +0200
    Re: How expensive is glob'ing a dir and including all the files? Jerry Stuckle <jstucklex@attglobal.net> - 2012-09-15 09:14 -0400
      Re: How expensive is glob'ing a dir and including all the files? Anders Wegge Keller <wegge@wegge.dk> - 2012-09-15 23:41 +0200
        Re: How expensive is glob'ing a dir and including all the files? Jerry Stuckle <jstucklex@attglobal.net> - 2012-09-15 18:06 -0400
          Re: How expensive is glob'ing a dir and including all the files? Anders Wegge Keller <wegge@wegge.dk> - 2012-09-16 00:10 +0200
            Re: How expensive is glob'ing a dir and including all the files? Jerry Stuckle <jstucklex@attglobal.net> - 2012-09-15 18:21 -0400
              Re: How expensive is glob'ing a dir and including all the files? Anders Wegge Keller <wegge@wegge.dk> - 2012-09-16 00:39 +0200
                Re: How expensive is glob'ing a dir and including all the files? Jerry Stuckle <jstucklex@attglobal.net> - 2012-09-15 18:45 -0400
                Re: How expensive is glob'ing a dir and including all the files? Anders Wegge Keller <wegge@wegge.dk> - 2012-09-16 00:59 +0200
                Re: How expensive is glob'ing a dir and including all the files? The Natural Philosopher <tnp@invalid.invalid> - 2012-09-16 00:09 +0100
                Re: How expensive is glob'ing a dir and including all the files? Jerry Stuckle <jstucklex@attglobal.net> - 2012-09-15 19:19 -0400
                Re: How expensive is glob'ing a dir and including all the files? Jerry Stuckle <jstucklex@attglobal.net> - 2012-09-15 19:27 -0400
            Re: How expensive is glob'ing a dir and including all the files? The Natural Philosopher <tnp@invalid.invalid> - 2012-09-15 23:38 +0100
        Re: How expensive is glob'ing a dir and including all the files? "Peter H. Coffin" <hellsop@ninehells.com> - 2012-09-16 09:37 -0500
          Re: How expensive is glob'ing a dir and including all the files? Anders Wegge Keller <wegge@wegge.dk> - 2012-09-16 17:32 +0200
            Re: How expensive is glob'ing a dir and including all the files? Jerry Stuckle <jstucklex@attglobal.net> - 2012-09-16 17:46 -0400

csiph-web