Files

Files

File handling is an important activity of all web application development process. Files are processed for different tasks using the following events:

● PHP Open a File,

● PHP Read a File,

● PHP Close a File,

● PHP Write a File,

● PHP Appending a File and

● PHP uploading a File.

PHP Open a File

fopen() is a system function available in PHP. This function helps to open a file in the server. It contains two parameters one for the file and the other one specifies in which mode the file should be opened (Read/Write).

Syntax:

$file_Object= fopen(“FileName”, “Read/WriteMode”) or die(“Error Message!”);

Example:

<?php

$myfile = fopen(“Student.txt”, “r”) or die(“Unable to open file!”);

?>

PHP Read a File:

The fread() function reads from an open file. The file object comes from fopen function.

Syntax:

fread($file_Object,filesize(“FileName”));

Example:

<?php

fread($myfile,filesize(“Student.txt”));

?>

PHP Close a File:

The fclose() function is used to close an opened file. The file object comes from fopen function.

Syntax:

fclose($file_Object);

Example:

<?php

$myfile = fopen(“student.txt”, “r”); // some code to be executed....

fclose($myfile);

?>

PHP write a File:

The fwrite() function is used to write to a file.

Syntax:

fwrite($myfile, $txt);