ID: 44222 User updated by: c dot d dot brengel at att dot net Reported By: c dot d dot brengel at att dot net Status: Open Bug Type: Filesystem function related Operating System: Windows XP PHP Version: 5.2.5 New Comment:
Thank You. I just needed to know if was a problem with my system, PHP or Windows. Thank You for confirming it is a Windows problem. I have used another work around so I do not need to use "tempnam". It would be a good idea to update the PHP documentation to let others know of this behavior on WIndows. Keep up the good work Previous Comments: ------------------------------------------------------------------------ [2008-03-06 23:08:23] a dot u dot savchuk at gmail dot com As i understand it is not bug but described behavior of windows GetTempFileName() function. So it is not possible to fix that (in easy manner). >From MSDN http://msdn2.microsoft.com/en-us/library/aa364991.aspx : ... lpPrefixString The null-terminated prefix string. The function uses up to the first three characters of this string as the prefix of the file name. ... Other possible solution is to create own version of GetTempFileName() under Windows but i think htta more simple and correct solution is to describe it in docu as Windows-specific issue... Also there are some possible problems can occur with this function under Windows: 1. if temp directory path length more than MAXPATH-14 : ... lpPathName The directory path for the file name. Applications typically specify a period (.) for the current directory or the result of the GetTempPath function. The string cannot be longer than MAX_PATH–14 characters or GetTempFileName will fail. If this parameter is NULL, the function fails. ... so if templ directory will have (MAXPATHLEN-13) symbols then PHP check of length will successfully pass but GetTempFileName() will fail. There is patch for fix this problem: $ diff -upd /home/sawoy/source/php-5.2.5/main/php_open_temporary_file.c ./main/php_open_temporary_file.c --- /home/sawoy/source/php-5.2.5/main/php_open_temporary_file.c 2007-08-10 03:13:15.000000000 -0700 +++ ./main/php_open_temporary_file.c 2008-03-06 15:00:22.000000000 -0800 @@ -131,7 +131,11 @@ static int php_do_open_temporary_file(co trailing_slash = "/"; } +#ifdef PHP_WIN32 + if (spprintf(&opened_path, 0, "%s", new_state.cwd) > (MAXPATHLEN - 14)) { +#else if (spprintf(&opened_path, 0, "%s%s%sXXXXXX", new_state.cwd, trailing_slash, pfx) >= MAXPATHLEN) { +#endif efree(opened_path); free(new_state.cwd); return -1; 2. due algo of GetTempFileName() it will be not possible to create more than 65535 temporary files in on temp directory. On box where i tested it it can create only 65324 files and on next script hangs... Also for info: time of creation 65xxx-th file in one temp directory is encreased in ~10-15 times :) ------------------------------------------------------------------------ [2008-02-22 21:41:45] c dot d dot brengel at att dot net Description: ------------ It appears that when using "tempnam" the $prefix parameter only accepts 3 characters. I used tempnam(getcwd(),'ADR'.date(Y.m.d).'_') and the resulting file name ended up as "ADRBA.tmp" not the "ADR2008222_BA.tmp" that it should have given. I then tried tempnam(getcwd(), 'ADR123') and stil got only ADRXX.tmp. Not sure but would appreciate it if you could determine if this is in fact correct behavior. Reproduce code: --------------- <?php echo getcwd() . "\n\r"; chdir('tmp'); echo getcwd() . "\n\r"; $file=tempnam(getcwd(),'ADR'.date(Y.m.d).'_'); echo "$file"; ?> Expected result: ---------------- C:\Inetpub\wwwroot\ADRAL C:\Inetpub\wwwroot\ADRAL\tmp C:\WINDOWS\Temp\ADR2008222_C2.tmp Actual result: -------------- C:\Inetpub\wwwroot\ADRAL C:\Inetpub\wwwroot\ADRAL\tmp C:\WINDOWS\Temp\ADRC2.tmp ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=44222&edit=1
