Creating or Opening a File in PHP

By: David Sklar Emailed: 1697 times Printed: 2200 times    

Latest comments
By: rohit kumar - how this program is work
By: Kirti - Hi..thx for the hadoop in
By: Spijker - I have altered the code a
By: ali mohammed - why we use the java in ne
By: ali mohammed - why we use the java in ne
By: mizhelle - when I exported the data
By: raul - no output as well, i'm ge
By: Rajesh - thanx very much...
By: Suindu De - Suppose we are executing

Use fopen( ):

$fh = fopen('file.txt','r') or die("can't open file.txt: $php_errormsg");

The first argument to fopen( )is the file to open; the second argument is the mode to open the file in. The mode specifies what operations can be performed on the file (reading and/or writing), where the file pointer is placed after the file is opened (at the beginning or end of the file), whether the file is truncated to zero length after opening, and whether the file is created if it doesn't exist, as shown in Table below.

 

 

 

 
fopen( ) file modes

Mode

Readable?

Writeable?

File pointer

Truncate?

Create?

r

Yes

No

Beginning

No

No

r+

Yes

Yes

Beginning

No

No

w

No

Yes

Beginning

Yes

Yes

w+

Yes

Yes

Beginning

Yes

Yes

a

No

Yes

End

No

Yes

a+

Yes

Yes

End

No

Yes

On non-POSIX systems, such as Windows, you need to add a b to the mode when opening a binary file, or reads and writes get tripped up on NUL (ASCII 0) characters:

$fh = fopen('c:/images/logo.gif','rb');

To operate on a file, pass the file handle returned from fopen( ) to other I/O functions such as fgets( ), fputs( ), and fclose( ).

If the file given to fopen( ) doesn't have a pathname, the file is opened in the directory of the running script (web context) or in the current directory (command-line context).

You can also tell fopen( ) to search for the file to open in the include_path specified in your php.ini file by passing 1 as a third argument. For example, this searches for file.inc in the include_path:

$fh = fopen('file.inc','r',1) or die("can't open file.inc: $php_errormsg");

PHP Home | All PHP Tutorials | Latest PHP Tutorials

Sponsored Links

If this tutorial doesn't answer your question, or you have a specific question, just ask an expert here. Post your question to get a direct answer.



Bookmark and Share

Comments(1)


1. View Comment

this work is good

View Tutorial          By: sanath at 2008-12-15 01:18:43

Your name (required):


Your email(required, will not be shown to the public):


Your sites URL (optional):


Your comments:



More Tutorials by David Sklar
Find Difference between two dates in PHP
Reading .CSV file in PHP
Appending One Array to Another in PHP
Removing Duplicate Elements from an Array in PHP
Sorting an Array in PHP
Iterating Through an Array in PHP
Password protecting a page in PHP
Deleting Cookies in PHP
Reading Cookie Values in PHP
Setting cookies in PHP
Encrypting and decrypting in PHP
GDBM, NDBM, DB2, DB3, DBM, and CDB Databases in PHP
Using Text-File Databases in PHP
Upload and Download files with FTP in PHP
Extract files from a .zip file using PHP

More Tutorials in PHP
PHP code to import from CSV file to MySQL
PHP code to write to a CSV file from MySQL query
PHP code to write to a CSV file for Microsoft Applications
Convert XML to CSV in PHP
Password must include both numeric and alphabetic characters - Magento
PHP file upload (Large Files)
PHP file upload prompts authentication for anonymous users
PHP file upload with IIS on windows XP/2000 etc
Error: Length parameter must be greater than 0
Multiple File Upload in PHP using IFRAME
Resume or Pause File Uploads in PHP
Exception in module wampmanager.exe at 000F15A0 in Windows 8
Handling file locks in PHP
HTML table output using Nested for loops in PHP
Count occurrences of a character in a String in PHP

More Latest News
Most Viewed Articles (in PHP )
isset() function in PHP
Using Text file as database in PHP
Convert IP address to integer and back to IP address in PHP
Traversing Arrays Using foreach in PHP
public, protected, and private Properties in PHP
parent:: AND self:: in PHP
Using Cookies in PHP
preg_replace() and preg_replace_callback() in PHP
preg_split() and explode() in PHP
GDBM, NDBM, DB2, DB3, DBM, and CDB Databases in PHP
Parent: child process exited with status 3221225477 -- Restarting
A Basic Example using PHP in AWS (Amazon Web Services)
Function to return number of digits of an integer in PHP
Retrieve multiple rows from mysql and automatically create a table in PHP
Get the first and last day of the month in PHP
Most Emailed Articles (in PHP)
Traversing Arrays Using foreach in PHP
preg_split() and explode() in PHP
GDBM, NDBM, DB2, DB3, DBM, and CDB Databases in PHP
Sorting an Array in PHP
fixEncoding in PHP
Assignment operators in PHP
switch Statements in PHP
preg_match(), function preg_match_all(), preg_grep() in PHP
Reading .CSV file in PHP
Encrypting files using GnuPG (GPG) via PHP
Where does the PHP run?
Setting up PHP in Windows 2003 Server IIS7, and WinXP 64
Perl's Encoding::FixLatin equivalent in PHP
break out of an if() block in PHP
PHP file upload with IIS on windows XP/2000 etc