Basic PHP File Handling — Create, Open, Read, Write, Append, Close, and Delete
I don't do a great deal of file handling in my PHP code -- most of my customers don't have a need for it or there's no room for file creation in the already tight budget. On the rare occasion that I do need to manipulate files, I keep the following tip sheet.
Create a File
$my_file = 'file.txt';
$handle = fopen($my_file, 'w') or die('Cannot open file: '.$my_file); //implicitly creates file
Open a File
$my_file = 'file.txt';
$handle = fopen($my_file, 'w') or die('Cannot open file: '.$my_file); //open file for writing ('w','r','a')...
Read a File
$my_file = 'file.txt'; $handle = fopen($my_file, 'r'); $data = fread($handle,filesize($my_file));
Write to a File
$my_file = 'file.txt';
$handle = fopen($my_file, 'w') or die('Cannot open file: '.$my_file);
$data = 'This is the data';
fwrite($handle, $data);
Append to a File
$my_file = 'file.txt';
$handle = fopen($my_file, 'a') or die('Cannot open file: '.$my_file);
$data = 'New data line 1';
fwrite($handle, $data);
$new_data = "\n".'New data line 2';
fwrite($handle, $new_data);
Close a File
$my_file = 'file.txt';
$handle = fopen($my_file, 'w') or die('Cannot open file: '.$my_file);
//write some data here
fclose($handle);
Delete a File
$my_file = 'file.txt'; unlink($my_file);
your work is very good,but need your in creating my website about cricket
To avoid warnings, not forget if(!file_exists(‘myfile.txt’)) ;)
To avoid warnings, not forget if(!file_exists(‘myfile.txt’)) ;)
your work is very good,but need your in creating my website about cricket
Simple, but usefull!
Hello Everyone,
File handling functions in PHP are extremely useful and userfriendly.PHP includes a lot of built-in functions for handling files and directories. You can read, write, delete, and get lots of information on files through the use of these functions…………… for more details please check out the following link….
http://mindstick.com/Articles/07d7e4cf-b11c-49ea-8f4f-27c2e7f67c09/?File%20Handling%20in%20PHP
Thanks !!!!
Quite useful! Better to add the modes of the files. So that a person can understand more about php file handling… Thanks
This is basic stuff. How about a script for updating a record in an ASCII flat file?
so useful for freshers in php
Once again, I need a question answered and I find my way to David’s site. Thanks for all your help.
Gary
Nice and concise! Definitely bookmarking. +1
Just found something out thought I’d post here for everyone else,
To read a file line by line use fgets($file_handle)
$file_handle = fopen(“myfile”, “r”);
while (!feof($file_handle)) {
$line = fgets($file_handle);
echo $line;
}
fclose($file_handle);
so useful for freshers in php
Nice tutorial an am preparing this and i have an Interview next week :-)
Thanks for making this nice tutorial and i am learning this. I only know to handle file via Control Panel i will learn it and try all those in a local server first
Short and to the point, thanks, exactly what I was looking for. Much easier to delete a file than I thought, but what are your thoughts on security? Does this have any gaping security holes?
Ok I have the code
$my_file = 'file.txt'; $handle = fopen($my_file, 'w') or die('Cannot open file: '.$my_file); $data = 'This is the data'; fwrite($handle, $data);And When I See if it works I geta
You’re missing a semicolon at the end.
Braydon, you’re probably missing a semi-colon in the line that comes before the code shown in your comment.
how come my output file has bo breaks? it is writing everything as a single line.
how come my output file has no breaks? it is writing everything as a single line. I want output like this:
Line1
Line2:
Line3
……..
You Have to use This don’t use \n
$data = ‘This
is
the
data’;
Actually, using \n does work but you need to use “\n”, not ‘\n’.
hmm.make it simple
your code doesn’t work am getting this error
$upload_dir = 'user_images/'; // upload directory $random_name= rand(1000,1000000)."."."txt"; $my_file = $upload_dir.$random_name; $handle = fopen($my_file, 'w') or die('Cannot open file: '.$my_file); $data = $userjob; fwrite($handle, $data); fclose($handle)This is my code
Chin-Chin everybody )
Tell me please how to change directory for my file at this code :
'file.txt'; $handle = fopen($my_file, 'w') or die('Cannot open file: '.$my_file); //open file for writing ('w','r','a')...Thank you very much!