#49759 [NEW]: socket_read() fails to return empty string

From: chmod3 at googlemail dot com Operating system: WinVista & FreeBSD PHP version: 5.3.0 PHP Bug Type: Sockets related Bug description: socket_read() fails to return empty string Description: ------------ According to documentation: "Note: socket_read() returns a zero length string ("") when there is no more data to read." This does not seem to be the case on my installations: PHP 5.3.0 WinVista PHP 5.2.11 WinVista PHP 5.2.11 FreeBSD PHP 5.2.10 WinVista PHP 5.2.9 WinVista socket_read() just hangs. Reproduce code: --------------- $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP); $connection = socket_connect($socket, 'news.giganews.com', 119); $response = ''; do { $recv = ''; echo "START READ\n"; $recv = socket_read($socket, 512); echo "END READ\n"; var_dump($recv); if($recv != '') { $response .= $recv; } } while($recv != ''); echo 'OUTPUT: ' . $reply; Expected result: ---------------- START READ END READ string(23) "200 News.GigaNews.Com " START READ END READ OUTPUT: 200 News.GigaNews.Com Actual result: -------------- START READ END READ string(23) "200 News.GigaNews.Com " START READ -- Edit bug report at http://bugs.php.net/?id=49759&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=49759&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=49759&r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=49759&r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=49759&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=49759&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=49759&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=49759&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=49759&r=needscript Try newer version: http://bugs.php.net/fix.php?id=49759&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=49759&r=support Expected behavior: http://bugs.php.net/fix.php?id=49759&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=49759&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=49759&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=49759&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=49759&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=49759&r=dst IIS Stability: http://bugs.php.net/fix.php?id=49759&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=49759&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=49759&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=49759&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=49759&r=mysqlcfg