fwrite

Name:fwrite

Category:File system

Programming Language:php

One-line Description:Write to the file.

Definition and usage

The fwrite() function writes to a file (safely used in binary files).

Example

 <?php
$file = fopen ( "test.txt" , "w" ) ;
echo fwrite ( $file , "Hello World. Testing!" ) ;
fclose ( $file ) ;
?>

Output:

 twenty one

grammar

 fwrite ( file , string , length )

parameter	describe
file	Required. Specifies the open file to be written.
string	Required. Specifies the string to be written to the file.
length	Optional. Specifies the maximum number of bytes to be written.

illustrate

fwrite() writes the contents of string to the file pointer file . If length is specified, the writing will stop when length bytes are written or string is finished, depending on which situation is encountered first.

fwrite() returns the number of characters written, and returns false when an error occurs.