[SOLVED] fread()

[Brian W]

I have a form that Posts to a .php with the code below. I want it to take the original content of the file and then add what I posted ontop. Right now it replaces the original text.

<?php
$handle = fopen('Games/Data1.html', 'w+');
$Read = fread('Games/Data1.html');
$Text = $_POST['input']."<br/>".$Read; ?>
<?php fwrite($handle, $Text) ?>
<?php fclose('Games/Data1.html');
header('location:Table.php')?>

I'm probably using the fread incorrectly. I am using PHP 4 I believe.

BTW, if you didn't gather, this kinda works like a chat file because it kinda is. lol    but not exactly.

[Brian W]

First off, i've made three changes to the code so  far. 2 of which I modified on the above post. the latest if fixed me dumb a** mistake that should have never even happened.

$Read = fread($handle);//thats a little better, but for all I know may still be incorrect

Still not adding the string on top, just rewriting the whole file with what i post.

[discomatt]

Check out fopen in the manual...

 

More specifically the 'mode' argument

[Brian W]

OH, thank you... I read "truncate to 0" and thought, "that doesn't good". So, I looked into it. Bad. redesigned code=

<?php
$filename = 'Games/Data1.html';
$handle = fopen($filename, 'x');
fclose($handle);
$handle = fopen($filename, 'r+');
$contents = fread($handle,"20000");
$Text = $_POST['input']."<br/>"; ?>
<?php fwrite($handle, $Text); ?>
<?php fclose($handle);
header('location:Table.php');?>

It is now not saving over, which is nice. I have the x one there to create the file if it doesn't exist. Now, how am I supposed to point the write to the beginning?

[Brian W]

Nevermind, because I left the piece in there that read, it pointed to the end. cut that part and it worked. Thanks again.

[discomatt]

The 'x' modeshould place the pointer at the beginning of the file.. so any fwrites should automatically go above... no need to fread().

 

<?php
$filename = 'Games/Data1.html';
$handle = fopen($filename, 'x');
$Text = $_POST['input']."<br/>"; ?>
fwrite($handle, $Text);
fclose($handle);
header('location:Table.php');?>

[Brian W]

the description of 'x' made mention of that if the file already exists, it would return FALSE. I thought that meant its only good for creating brand new files...

[discomatt]

It sure does... You should use 'r+'

 

My bad

[Brian W]

I don't need to read, least I don't think I do.

NEW PROBLEM OCCURRED

Just as it started working. Suddenly it bugged out and stopped. WTF, really.

It was odd because it was working and then I opened 2 windows so I could chat with myself and suddenly it glitched and won't work anymore.

What it does now is replace what I have written, like when you hit the insert key (oh how I hate that key).

[discomatt]

r+ is for reading and writing. It's the only way you'll get your pointer at the start of the file without loading the contents into memory.

[Brian W]

rewind() my friend.

I figured out the problem and got it working, or at least it works. Like I said, it was writting over anything over what was already there. So, I had it read, then write my new stuff with what it read before attached to the end of it, essentially adding content every time. Topic solved, lesson learned.

[discomatt]

Ah, first time i've seen that function. Good to know.

[Brian W]

This is the ugly piece of crap I made. It works

<?php
$filename = 'Games/Data1.html';
$handle = fopen($filename, 'x');
fclose($handle);
$handle = fopen($filename, 'r+');
$content = fread($handle, filesize($filename));
rewind($handle);
$Text = $_POST['input']."<br>".$content; ?>
<?php fwrite($handle, $Text); ?>
<?php fclose($handle);
header('location:Table.php');?>