FileSystem Function in PHP: PART 6

Introduction

In this article I describe the PHP FileSystem functions file_put_contents, fileatime, filectime and filegroup. To learn some other FileSystem functions, go to:

PHP file_put_contents() Function

The PHP file_put_contents function is used to write strings into a file and it returns the number of bytes that were written to the file or false on failure.

Syntax

file_put_contents(file,data,mode,context)

Parameters in file_put_contents function

The parameters of the function are:

Parameter	Description
file	It specifies the path of the file where to write the data.
data	It specifies the data to write to the file.
mode	It specifies how to open or write to the file and its possible values are: FILE_USE_INCLUDE_PATH FILE_APPEND LOCK_EX
context	It specifies the context of the file handle.

Example

<?php
echo file_put_contents("test.txt","Welcome in MCN Solution!");
?>

Output

PHP fileatime() Function

The PHP fileatime function gives the last access of time of the specified file, in other words it returns the time the file was last accessed or false on failure. The time is returned as a Unix timestamp.

Syntax

fileatime(filename)

Parameter in fileatime function

The parameter of the function is:

Parameter	Description
filename	It specifies the file to check.

Example

<?php

$time = time();

echo "current date and times is ".date("m/d/y H:i:s ", $time);

echo "<br>current File Access Time is ".date("m/d/y H:i:s ", fileatime("test.txt"));

?>

Output

PHP filectime() Function

The PHP filectime function is used to get the last inode change time for a file, in other words it returns the time the file was last accessed or false on failure. The time is returned as a Unix timestamp..

Syntax

filectime(filename)

Parameter in filectime function

The parameter of the function is:

Parameter	Description
filename	It specifies the file to check.

Example

<?php

echo filectime("test.txt")."</br>";

echo "Last change: ".date("F d Y H:i:s.",filectime("test.txt"));

?>

Output

PHP filegroup() Function

The PHP filegroup function is used to give the file group and it returns the group id of the file or false on failure. The group id is returned in the numeric format.

Syntax

filegropup(filename)

Parameter in filegroup function

The parameter of the function is:

Parameter	Description
filename	It specifies the file to check.

Example

<?php

echo filegroup("test.txt");

?>

Output