<p>I have a time consuming php script so I wanted to give the users some feedback. Simplify it to solve the core problem. The script runs perfectly fine in Firefox (refreshes the output immediately), but Safari waits for all content to be generated. Why? How can I solve this problem? </p> <pre class="brush:php;toolbar:false;"><?php ini_set('max_execution_time', 0); header('Content-Encoding: none;'); header('Content-type: text/html; charset=utf-8'); $j = 8; $k = pow(2, 10); echo "One moment please...".str_pad('', $k)."<br />\n<br />\n"; flush(); $i = 0; while ($i < $j) { $i; echo "Test ".$i.str_pad('',$k)."<br />\n"; flush(); sleep(1); } ?></pre> <p>BTW: Chrome won't load this page at all, it will give me <code>ERR_CONTENT_DECODING_FAILED</code>. </p> <p>Also I tried to put</p> <pre class="brush:php;toolbar:false;"><IfModule mod_env.c> SetEnv no-gzip 1 </IfModule></pre> <p> in .htaccess but no luck. Also tried <code>SetEnv no-gzip dont-vary</code>. Any clues on how I can get Safari (and Chrome) to do the same thing as Firefox? </p> <hr /> <p>I read on php.net about <code>flush()</code>, <code>ob_flush()</code>, <code>ob_start()</code> ; etc., and I've read almost every comment on Stackoverflow on every question about flush over the past 20+ years. I tried adding <code>ini_set('output_buffering', 'On');</code> or <code>ini_set('output_buffering', 'Off');</code>, adding <code> ob_start(null,Chapter 4096<code>header('X-Content-Type-Options: nosniff');</code> and/or<code>header('X-Accel-Buffering: no') ;</code>. I put <code>@ob_flush();</code> before or after <code>flush();</code> and tried putting <code>str_pad< Raising the value in /code> to 2^16 (65,536) did not help.</p><p> Unfortunately, I can't seem to control the Apache server (running PHP 8.1 and FastCGI) at my hosting provider. Now that it works on Firefox, I guess I must be doing something right. </p>

<?php 
ini_set('max_execution_time', 0);
header('Content-Encoding: none;');
header('Content-type: text/html; charset=utf-8;');
ob_start("ob_gzhandler");
$j = 200;
$k = pow(2, 10);

echo "One moment please...".str_pad('', $k)."<br />\n<br />\n";


$i = 0;
while ($i < $j) {
    $i++;
    echo "Test ".$i.str_pad('',$k)."<br />\n";
    ob_flush();
    usleep(100000);
} 
?>

<?php
ini_set('max_execution_time', 0);
header('Content-Encoding: none;');
header('Content-type: text/html; charset=utf-8');
ob_start("ob_gzhandler");
$j = 8;
$k = pow(2, 10);

echo "One moment please...".str_pad('', $k)."<br />\n<br />\n";


$i = 0;
while ($i < $j) {
    $i++;
    echo "Test ".$i.str_pad('',$k)."<br />\n";
    ob_flush();
    sleep(1);
}
?>