fflush() function in PHP

The fflush() function flushes the output to an open file. This function forces a write of all buffered output to the resource pointed to by the file handle.

Syntax

fflush(file_pointer)

Parameters

• file_pointer − Specify the open file stream.

Return

The fflush() function returns.

• TRUE on success
• FALSE on failure

Example

<?php
   $file_pointer = fopen("one.txt","r+");
   fflush($file_pointer);
?>

Output

test line

Let us see another example.

Example

<?php
   $file_pointer = fopen("two.txt", "r");
   $res = fgets($file_pointer);
   while(! feof($file_pointer))
   fflush($check);
   fclose($file_pointer);
?>

Output

Java is a programming language.
JavaScript is a scripting language.