koteq · December 1, 2022 04:32
diff --git a/disable_output_buffering.php b/disable_output_buffering.php
 <?php

 // http/1.1 header to disable browsers cache
 header('Cache-Control: no-cache');

 // tell nginx to disable buffering
 header('X-Accel-Buffering: no');

 // disable apache mod_gzip and mod_deflate
 apache_setenv('no-gzip', 1);

 // disable builtin php's gzip
 ini_set('zlib.output_compression', 0);

 // it's sad to know, but it's imposible to change output_buffering by using ini_set
 // ini_set('output_buffering', 0);

 // tell php to call flush() after each output
 // ini_set('implicit_flush', true);  // seems ob_implicit_flush is better choise
 ob_implicit_flush(true);

 // close all started output buffers
 while (ob_get_level()) {
    ob_end_clean();
 }

 // here it is, unstopable unbuffered output
 // but remember to send 512 bytes to browser
 // or explicitly set page encoding
 header('Content-Type: text/html; charset=utf-8');
 ?>
 <!DOCTYPE HTML>
 <html>
 <head>
    <title>Buffering Disabled</title>
    <script>
        var scrollInterval = setInterval("window.scrollBy(0, 1000);", 100);
    </script>
 </HEAD>
 <head>
 <h2>Appears first, then waiting</h2>
 <?
 for ($i = 1; $i < 6; $i++) {
    echo "Wait $i sec...<br>\n";
    sleep(1);
 }
 ?>
 Done!
 <script>
    window.scrollBy(0, 1000);
    clearInterval(scrollInterval);
 </script>
 </body>
 </html>
	<?php

	// http/1.1 header to disable browsers cache
	header('Cache-Control: no-cache');

	// tell nginx to disable buffering
	header('X-Accel-Buffering: no');

	// disable apache mod_gzip and mod_deflate
	apache_setenv('no-gzip', 1);

	// disable builtin php's gzip
	ini_set('zlib.output_compression', 0);

	// it's sad to know, but it's imposible to change output_buffering by using ini_set
	// ini_set('output_buffering', 0);

	// tell php to call flush() after each output
	// ini_set('implicit_flush', true); // seems ob_implicit_flush is better choise
	ob_implicit_flush(true);

	// close all started output buffers
	while (ob_get_level()) {
	ob_end_clean();
	}

	// here it is, unstopable unbuffered output
	// but remember to send 512 bytes to browser
	// or explicitly set page encoding
	header('Content-Type: text/html; charset=utf-8');
	?>
	<!DOCTYPE HTML>
	<html>
	<head>
	<title>Buffering Disabled</title>
	<script>
	var scrollInterval = setInterval("window.scrollBy(0, 1000);", 100);
	</script>
	</HEAD>
	<head>
	<h2>Appears first, then waiting</h2>
	<?
	for ($i = 1; $i < 6; $i++) {
	echo "Wait $i sec...<br>\n";
	sleep(1);
	}
	?>
	Done!
	<script>
	window.scrollBy(0, 1000);
	clearInterval(scrollInterval);
	</script>
	</body>
	</html>