ID: 31085 Updated by: php-bugs@lists.php.net Reported By: php at webdevelopers dot cz -Status: Feedback +Status: No Feedback Bug Type: Filesystem function related Operating System: Linux 2.6.6 (gcc 3.3.4) PHP Version: 5.0.2 Assigned To: wez New Comment:
No feedback was provided for this bug for over a week, so it is being suspended automatically. If you are able to provide the information that was originally requested, please do so and change the status of the bug back to "Open". Previous Comments: ------------------------------------------------------------------------ [2005-02-28 21:16:33] [EMAIL PROTECTED] Please try using this CVS snapshot: http://snaps.php.net/php5-latest.tar.gz For Windows: http://snaps.php.net/win32/php5-win32-latest.zip ------------------------------------------------------------------------ [2005-01-24 02:26:58] [EMAIL PROTECTED] Returning !feof() in stream_eof() seems to 'fix' this. looks like the LIVENESS test in main/streams/userspace.c:838 uses reverse logic? ------------------------------------------------------------------------ [2004-12-14 11:41:28] php at webdevelopers dot cz Description: ------------ PHP caches the userarea wrappers - it results for example to WRAPPER::stream_read(8192) call by PHP even if the user issued fread($f, 10); If the file is for example 20 bytes long then user gets EOF immediately after first fread($f, 10) because PHP cached it by calling WRAPPER::stream_read(8192) instead! Example: (file size is 20 bytes) user: $f=fopen(..., 'r'); zend: stream_open(...); zend: stream_read(8192); // And we immediately get EOF in my example (8192 > 20) user: fread($f, 10); // Reads first 10 bytes user: feof($f); zend: stream_eof(...); // Result is TRUE thus when feof() used in cyclus it does not iterate even if there are 10 bytes more in this example. Reproduce code: --------------- stream_wrapper_register('xyz', 'MyStream') or die('Failed to register X protocol.'); test('xyz://me.txt'); test('./test_me2.txt'); function test($fileName) { echo "TEST: $fileName\n"; $f=fopen($fileName, 'w+'); fwrite($f, '123456789'); fclose($f); $f=fopen($fileName, 'r'); while(!feof($f)) { echo "[".fread($f, 5)."]\n";} fclose($f); } class MyStream { private $f; function stream_open($path, $mode, $options, &$opened_path) { $path=str_replace('xyz://', './test_', $path); return (bool) $this->f=fopen($path, $mode); } function stream_read($count) {return fread($this->f, $count);} function stream_write($data) {return fwrite($this->f, $data);} function stream_tell() {return ftell($this->f);} function stream_eof() {return feof($this->f);} function stream_seek($offset, $whence) {return fseek($this->f, $offset, $whence);} function stream_close() {return fclose($this->f);} } Expected result: ---------------- TEST: xyz://me.txt [12345] [6789] TEST: ./test_me2.txt [12345] [6789] Actual result: -------------- TEST: xyz://me.txt TEST: ./test_me2.txt [12345] [6789] ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=31085&edit=1
