[SOLVED] File handling Questions!

[pkirsch]

Hi,

I have a few questions regarding File Handling!

If you use fopen to open a file, and the file doesn't exist, it will create it. Right?

What happens if you never close a file using fclose and just leave it open?

[The Little Guy]

No.

 

you need to check if the file exists before you actually open it, then you won't get errors about a non existing file.

 

if you use fwrite, then the file will be created if it doesn't exist.

[Barand]

If you open a file in write mode

 

<?php
$fp=fopen('empty.txt', 'w');
fclose($fp);                          // creates new empty file  (no fwrite required)
?>

 

it does not need to exist. If it doesn't exist the new file is create, if it does exist then the existing file is overwritten.

[The Little Guy]

Oops, sorry I should have looked at the manual first.

 

You should do a check first though:

<?php
$filename = '/path/to/foo.txt';
$fp=fopen($filename, 'w');
if(file_exists($filename)){
     fclose($fp);                          // creates new empty file  (no fwrite required)
}else{
     echo 'Flie Doesn\'t Exist.';
}
?>

[pkirsch]

Thanks so much guys!

 

Have a great day,

pkirsch