opening a text file and writing contents to new filename

Posted on 2003-12-01
Medium Priority
Last Modified: 2008-03-06
I need to open up a text file and then write the contents of that text file into a different file. Inside the text file there are some variables that need the values printed out in the new file. The Original file is merely a template and the other files have certain filenames changed accordingly. Does that make sens? I hope so.

Question by:rexburgess
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
LVL 13

Expert Comment

ID: 9856163

i don't quite understand what you're trying to do but i suppose it's something like this:

$readfilename = "file.txt"; // change this
$writefilename = "fileout.txt"; // change this too
$file = file_get_contents($readfilename);
eval("\$file = \"$file\";");
$fp = fopen($writefilename, "wb");
if(!$fp) {
  print "Error in opening file";
} else {
  $write = fwrite($fp, $file);
  if($write) {
    print "Successfully written to file";
  } else {
    print "Error writing to file";

tell me how you get on


Expert Comment

ID: 9860426
Try doing this:
  $readfilename = "file.txt";
  $writefilename = "fileout.txt";
  $fd = fopen($writefile) or die("Could not open file.");
  $indata = file($readfile) or die("Could not open file.");
  foreach($indata as $curline){
    $outdata[] = preg_replace("/%([^ ]+)%/",$indata,$${1}); // <-- Notice the 2 $$ are wanted.
Notice that I've never tried to do the $$ stuff but I heard about it some time ago and ou seem to need it.
Otherwise just define a preg_replace for every variable you want to insert in the file.

Author Comment

ID: 9862766
Alright, this is what I came up with and it works like a charm.

lot.php  script


//open template file

//replace variables
$contents2=ereg_replace("VARIABLE_LOT_NUMBER", "$lot", "$contents");
$filename_template=ereg_replace("VARIABLE_PLAN_NUMBER", "$plan", "$contents2");

//create new file

//chmod new file
chmod("$full_file_path/lot$lot_number.html", 0777);

//open new file for writing
$filename_final=fopen("$full_file_path/lot$lot_number.html", "w")
  or die("<center>ERROR: Cannot open desired lot. Please try again later.</center>");
//write to new file

end  lot.php  script

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!


Expert Comment

ID: 9880436
Might I just add a note here:

according to the php manual:

"preg_replace(), which uses a Perl-compatible regular expression syntax, is often a faster alternative to ereg_replace()."

Furthermore, str_replace() should be used in this case. Once again from the PHP manual:

"If you don't need fancy replacing rules, you should always use this function instead of ereg_replace() or preg_replace()."

I'm being fussy I know, but good habits make good scripts...

Expert Comment

ID: 9881648
Yes that's right.
But I noticed that doing it your way, rexburgess, replaces just one kind of strings. If you have more than one substitutions defined in lot.txt you will have to do a foreach that cycles through the substitutions.

Accepted Solution

modulo earned 0 total points
ID: 12623933
PAQed with points refunded (125)

Community Support Moderator

Featured Post

[Webinar] How Hackers Steal Your Credentials

Do You Know How Hackers Steal Your Credentials? Join us and Skyport Systems to learn how hackers steal your credentials and why Active Directory must be secure to stop them.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I imagine that there are some, like me, who require a way of getting currency exchange rates for implementation in web project from time to time, so I thought I would share a solution that I have developed for this purpose. It turns out that Yaho…
Build an array called $myWeek which will hold the array elements Today, Yesterday and then builds up the rest of the week by the name of the day going back 1 week.   (CODE) (CODE) Then you just need to pass your date to the function. If i…
The viewer will learn how to count occurrences of each item in an array.
This tutorial will teach you the core code needed to finalize the addition of a watermark to your image. The viewer will use a small PHP class to learn and create a watermark.
Suggested Courses

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question