dev-lang/php USE flag to enable php's glob() ?

[mieses]

I don't know if this is the right place to ask a question about dev-lang/php.

PHP's glob() function returns an empty array when called in a web page but works when called from command line. Is there a USE flag to allow PHP's glob() function access to the filesystem (or to libc)?

The following php code returns an empty array:

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<?php
print_r(glob("/var/www/localhost/htdocs/*"));
?>

while the following shell command correctly returns an array of filenames and directories:

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# sudo -u apache php -c /etc/php/apache2-php5/php.ini -r 'print_r(glob("/var/www/localhost/htdocs/*"));'

Note that I am trying to force command line php to use the same php.ini as apache uses, for sake of consistency.

My phpinfo() does not indicate that any functions are disabled. I don't think php is running in "safe mode". I see the same behavior in dev-lang/php-5.2.12 and 5.2.13, on x86 and amd64. The scandir() function is able to access the filesystem when called from a web page.

php 5.2.13 is compiled with the following USE flags:

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apache2 berkdb bzip2 cli crypt ctype gdbm hash iconv imap ipv6 json ldap mysql mysqli ncurses nls pcre pdo readline reflection session simplexml snmp sockets spl ssl threads truetype unicode xml xmlrpc xsl zlib -adabas -bcmath -birdstep -calendar -cdb -cgi -cjk -concurrentmodphp -curl -curlwrappers -db2 -dbase -dbmaker -debug -discard-path -doc -empress -empress-bcs -esoob -exif -fastbuild -fdftk -filter -firebird -flatfile -force-cgi-redirect -frontbase -ftp -gd -gd-external -gmp -inifile -interbase -iodbc -java-external -kerberos -kolab -ldap-sasl -libedit -mcve -mhash -msql -mssql -oci8 -oci8-instant-client -odbc -pcntl -pic -posix -postgres -qdbm -recode -sapdb -sharedext -sharedmem -soap -solid -spell -sqlite -suhosin -sybase -sybase-ct -sysvipc -tidy -tokenizer -wddx -xmlreader -xmlwriter -xpm -yaz -zip

This issue is similar to http://bugs.php.net/bug.php?id=48365 except that in my case glob() does work from command line. Is there a USE flag that affects the behavior of php's glob()?