[PHP] .DAT file with PHP

[Jabez]

I want to use PHP to show the contents of the DAT from back to front. HOw do

I do that?

Thanks!

 

RE: [PHP] .DAT file with PHP

[Jabez]

I used the following code that Paul suggested, but it didn't reverse my
content.

The file I would want to have the content reversed is as attached. Chinese
characters is in the file so...

Suggestions?

-Original Message-
From: Paul Novitski [mailto:[EMAIL PROTECTED] 
Sent: Thursday, March 09, 2006 2:58 AM
To: php-general@lists.php.net
Subject: Re: [PHP] .DAT file with PHP

At 10:27 AM 3/8/2006, Rory Browne wrote:
>$filename = "filename.txt";
>$file_content = join("\n", array_reverse(file($filename))); echo 
>$file_content;


Rory,

I think you've got the logic right.

Tangentially, however, I recommend that you break it out into separate
statements and not throw multiple functions into the same statement -- it's
hard to proofread, it's hard to pinpoint where errors occur, and it's next
to impossible to insert echo statements to debug the process.  Also for ease
of debugging & maintenance, I recommend indicating the type of each variable
with a prefix (a=array, s=string, etc.):

 $sFilename = "filename.txt";
 $aFile_content = file($sFilename);
 $aFile_reverse = array_reverse($aFile_content);
 $sDisplay_content = join("\n", $aFile_reverse);
 echo $sDisplay_content;

I don't think PHP will "care" whether it's broken out or not -- internally
it's having to create temporary variables on the fly to store incremental
values -- but your future self and other folks reading your code will thank
you for it.

Regards,
Paul 

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RE: [PHP] .DAT file with PHP

[Jabez Gan]

Sorry im new but, how do we read from a file to an array? I've studied C but
not with PHP and it's not working for me... Suggestions?



-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, March 08, 2006 9:58 PM
To: [EMAIL PROTECTED]; php-general@lists.php.net
Subject: RE: [PHP] .DAT file with PHP

[snip]
I want to use PHP to show the contents of the DAT from back to front.
HOw do

I do that?

[/snip]

Open the file, read it into an array, read the array backwards and close the
file. Start with http://www.php.net/fopen and http://www.php.net/array 
they are both in the manual.

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RE: [PHP] .DAT file with PHP

[Jabez Gan]

I use:

$frob = fopen('data/rob.dat','r');
if ($frob) {
while (!feof($frob)) {
$buffer = fgets($frob, 4096);
echo $buffer;
$glorp[] = $buffer; // places line in array
}
}

$read = array_reverse($glorp);


However, only "Array" text came out when I do an echo $read

What's wrong...?

Thanks for your patience!

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, March 08, 2006 11:50 PM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED];
php-general@lists.php.net
Subject: RE: [PHP] .DAT file with PHP

[snip]
Sorry im new but, how do we read from a file to an array? I've studied C but
not with PHP and it's not working for me... Suggestions?
[/snip]

First, read and understand, as much as possible, TFM. It should go something
like this

$foo = fopen("my.dat", "r");
while(!feof($foo)){
$bar = fgets($foo, 4096); // gets a line hopefully
$glorp[] = $bar; // places line in array }

Once you have done this look at http://www.php.net/array for all of the
things that you can do with the $glorp array

y



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