How To Write At The Start Of A File - without affecting its exisitng content

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How To Write At The Start Of A File - without affecting its exisitng content

leiaah
how do you write at the start of a file when it already has existing contents?...Like appending but not starting from the point where the last entry was made but from the top.

like in blogs, i mean.

Reply

no9t9
the easiest way is to read the entire contents of the file into a variable.
1. open the file for reading
2. read contents into variable
3. close file
4. open file for writing (overwrites all data currently in the file)
5. write new data to file
6. write old data in the variable to the file
7. close the file

Reply

LuciferStar
QUOTE(no9t9 @ Jan 23 2005, 03:23 PM)
the easiest way is to read the entire contents of the file into a variable.
1. open the file for reading
2. read contents into variable
3. close file
4. open file for writing (overwrites all data currently in the file)
5. write new data to file
6. write old data in the variable to the file
7. close the file
*



I'd prefer

1. open a tempfile, write new data to the tempfile
2. open the datafile for reading
3. read contents into the tempfile
4. close the datafile
5. close the tempfile
6. rename datafile,like this, you can get a backup to last writing
7. rename the tempfile to original datafile name

Reply

bjrn
QUOTE(leiaah @ Jan 23 2005, 08:41 AM)
like in blogs, i mean.
*


Like in blogs you don't save each blog entry in one big ugly file. You save each entry either in separate files, or in separate records in a database.

If you want to do this for a blog, don't save everything to one file, seriously. If you have Trap17 hosting there are lots of click and go blog systems you can install. But if you want to build something from scratch I'd store blog entries in a database and then for your front page do something like (this works with MySQL) "SELECT * FROM entries ORDER BY date DESC limit 0, 5". I think ordering descending will give you the newest first, but I'm not sure, if not, just replace DESC with ASC.

Reply

stevey
hey the guy asked a question so he doesnt want alot of stuff, just give him the damn code, heres how you write at the begining of a file..
CODE

<?php
//the file variable
$filename='file.txt';

//get contents of the file to the variable $ht
$ht=implode('',file($filename));

//the text you wish to write,note the \n to start a new line, dont forget it
$txt="This is the text you wish to write at the beggining of a file\n;

//open the file for writing, open in write mode, delete all previous content.
$handle=@fopen($filename,'w');
//join the previous contents of the file, with the new content
$txt .= $ht;
//finally write your text to the file
fwrite($handle,$txt);
//close the file
fclose($handle);
//to be on the safe side include some error handling
?>

 

 

 


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How To Write At The Start Of A File - without affecting its exisitng content



 

 

 

 

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