PHP 4.0 Bug #4727: Infinite while loop causes Apache process to hang around.

From: donncha.ocaoimh@tradesignals.com Operating system: linux,Solaris PHP version: 4.0.0 Release PHP Bug Type: Misbehaving function Bug description: Infinite while loop causes Apache process to hang around. <?php while (true) { print "hello world!"; sleep (1); } ?> The above script executes correctly on a PHP3 server and the Apache process serving the request is freed up if the client cancels/shuts down. On a PHP4 server the above loop causes the Apache process that served the request to hang and take up resources: $ date Wed May 31 13:16:23 IST 2000 $ ps auxw|grep -c apache 252 $ date Wed May 31 13:25:56 IST 2000 $ ps auxw|grep -c apache 252 Load average on the server is at 0.02, 0.57, 0.55 leading me to believe the loop isn't executing even though the Apache processes are still around. The test is repeatable. (I used wget 250 times on another box to drive the requests, then killed off wget with "killall wget", both for PHP3 and PHP4 tests.) Tested on Linux 2.2.15 and SunOS 5.6 using Apache 1.3.12, PHP4.0.0 and MySQL 3.23.16-alpha Configure line for Linux box: ./configure --disable-xml --disable-debug --enable-inline-optimization --enable-sysvshm --enable-sysvsem --with-mysql --without-gd --with-apxs=/usr/local/apache/bin/apxs php.ini is unchanged from distribution one.