File handling is an important part of any web application. You often need to open and process a file for different tasks. PHP has several functions for creating, reading, uploading, and editing files.
index.php ( fopen() & fread() )
<?php
readfile("demo.txt");
?>
<?php
$myfile = fopen("demo.txt", "r") or die("Unable to open file!");
echo fread($myfile,filesize("demo.txt"));
fclose($myfile);
?>
demo.txt this is my demo file for testing file handling
index.php ( fopen() & fwrite() write(w) )
<?php
$myfile = fopen("demo.txt", "w") or die("Unable to open file!");
$txt = "John Doen";
fwrite($myfile, $txt);
$txt = "Jane Doen";
fwrite($myfile, $txt);
fclose($myfile);
?>
index.php ( fopen() & fwrite() append (a) )
<?php
$myfile = fopen("demo.txt", "a") or die("Unable to open file!");
$txt = "Donald Duckn";
fwrite($myfile, $txt);
$txt = "Goofy Goofn";
fwrite($myfile, $txt);
fclose($myfile);
?>
