Remove lines which have no specified values?

Mythvn · #1 (**permalink**) 07-13-09, 07:25 AM

I'm parsing a large text file and I want to remove lines that have no specified values. Eg, if a line doesn't have : "abc" or "def" then it will be taken out. Can anybody help me please? Thanks so much.

job0107 · #2 (**permalink**) 07-13-09, 08:36 AM

PHP Code:


			
<?php
$a = fopen("test.txt","r");
while(!feof($a)){if(preg_match("/abc|def/",$line=trim(fgets($a)))){echo $line."<br />";}}
fclose($a);
?>

Mythvn · #3 (**permalink**) 07-13-09, 08:56 AM

Can I use preg_replace?

job0107 · #4 (**permalink**) 07-13-09, 10:07 PM

Quote:

Originally Posted by Mythvn

Can I use preg_replace?

I suppose you could if you want to replace one value with another.
I don't see why not.