Ereg() would be an excellent choice.
To move a step further, although it is a little more complex to become
familiar with, the perl regular expressions are considerably faster and
more efficient for anything with an expression, and str_replace() is
faster yet, if replacing a simple string.
Thus, it would probably be best to use:
$clean_term = str_replace( " ", "_", $term); // replace spaces with _
$clean_term = preg_replace("@[^a-zA-Z0-9_.]@", "", $term); // remove any
non-alphanumeric chars
There is an excellent article somewhere that gives some benchmark times
for the various methods... Anyone know where this is? I can't seem to
find it anymore.
However, I remember the basic concept: on a given string, preg_replace
ran about 1 second, ereg_replace ran about 4 seconds, and str_replace
ran about .2 seconds.
See these docs for info about syntax:
http://www.php.net/manual/en/function.preg-replace.php
http://www.php.net/manual/en/function.str-replace.php
http://www.php.net/manual/en/function.ereg-replace.php
Best wishes
Michael
"phpzen"
-----Original Message-----
From: Rodolfo Gonzalez [mailto:[EMAIL PROTECTED]]
Sent: Thursday, September 05, 2002 9:34 AM
To: Javier Montserat
Cc: [EMAIL PROTECTED]
Subject: Re: [PHP] formatting a filename
On Thu, 5 Sep 2002, Javier Montserat wrote:
> i want to format the filename of an uploaded file as follows :-
> -- replace blankspace with "_"
> -- remove any illegal characters.
> Which string functions should I use to do this?
http://www.php.net/manual/en/function.ereg.php
http://www.php.net/manual/en/function.ereg.php
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