flush

Definition and usage

The lush() function requests the server to send its currently buffered output to the browser. Server configuration may not always allow this to happen.

Example

Output a string to the browser before the script is finished running:

 <?php
// If the content is too short, some browsers will not display
// We use str_pad() to make the output long enough
echo str_pad ( "Hello World!" , 4096 ) ;

// Use flush() to send strings to the browser
flush ( ) ;

// Show the rest in three seconds
sleep ( 3 ) ;
echo "<br>" ;
echo "Hello World!" ;
?>

Try it yourself

grammar

 flush ( ) ;