[nycphp-talk] Help with regex
Nestor Florez
nestorflorez at earthlink.net
Fri May 16 16:54:25 EDT 2003
Dan et all,
Thanks for your help, I was able to do what I wanted
Using the following regex
$_ =~ s/.*[^>]+>(.*[^<])<\\/td>/\\1/gi;
I decide to use perl instead PHP because it was a lot easier reading the files in perl with the "while(<FILE>)", but I prefer PHP for creating web pages.
When I tried using php
-----------------------
33 $content = file($myfile); #readfile into array
34 foreach($content as $line_num => $line)
35 {
36 $a = "/.*[^>]+>(.*[^<])<\\/td>/\\1/"; #reg expression
37 $line = preg_replace($a, '$1', $line); #replace
38 }
------------------------------
I still get an error:
Warning: Unknown modifier '' in c:\\program files\\apache group\\apache\\htdocs\\php\\readphone.php on line 37
My problem is solved, but I wish what was causing the error message.
Thnaks again to all,
Nestor :-)
Is ther an easy way to read a file in PHP like there is in perl
-------Original Message-------
From: Analysis & Solutions <danielc at analysisandsolutions.com>
Sent: 05/16/03 09:28 AM
To: NYPHP Talk <talk at nyphp.org>
Subject: Re: [nycphp-talk] Help with regex
>
> Hi Nestor:
On Fri, May 16, 2003 at 11:27:23AM -0400, Nestor Florez wrote:
> <td width="49">205</td>
>
> $line = ereg_replace(".*>", "", $line);
As you probably realized, this is too greedy. The reason is because ".*"
is matching ANY character, including ">" so it goes through the whole line
until it gets to the final ">" This can be tweaked a tad so all
characters except ">" are
$line = ereg_replace('^[^>]+>', '', $line);
Also notice the anchoring of the expression to the start of the line to
avoid the expression repeating it's actions on subsequent >'s, and the use
of single quotes since no variables are in the expressions.
> $line = ereg_replace(".*?>", "", $line);
You're on the right track, but "?" is for preg expressions. So, another
option is converting it to a preg function:
$line = preg_replace('/^.*?>/', '', $line);
Enjoy,
--Dan
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