EXAMPLE SCRIPT:

if (ImageTypes() & IMG_PNG) {
    Header("Content-Type: image/png");
    ImagePNG($im_out);
} elseif (ImageTypes() & IMG_GIF) {
    Header("Content-Type: image/gif");
    ImageGIF($im_out);
} elseif (ImageTypes() & IMG_JPG) {
    Header("Content-Type: image/jpeg");
    ImageJPEG($im_out);
} else {
    Header("Content-Type: image/gif");
    ImageGIF($im_out);
    syslog(LOG_WARNING,"($user[username]) $REMOTE_ADDR could not find php-spported image.  (no libgd?)");
}

BUG DESCRIPTION:

This script (i cut the beginning of it off), instead of running the second statement - elseif (ImageTypes() & IMG_GIF) instead runs the *last* statement.  Yet, it still displays the GIF perfectly.... (originally the final case else just did a syslog and did not display anything... I put that Header and ImageGIF there when it was getting to that final else even when I had IMG_GIF support).  phpinfo reports that I do have GIF support, so I don't understand why ImageTypes() & IMG_GIF would be coming up false.

Thanks.

PHPINFO:
PHP Version 4.1.2 

System Linux candy 2.2.12-42 #1 Fri Nov 12 13:03:33 EST 1999 sparc64 unknown 
Build Date Feb 28 2002 
Configure Command  './configure' '--with-apache=../apache_1.3.20' '--enable-track-vars' '--prefix=/opt/www' '--with-mysql=/opt/mysql' '--enable-trans-sid' '--with-config-file-path=/opt/www/conf' '--with-zlib' '--with-gd' '--with-png-dir' 
Server API Apache 
Virtual Directory Support disabled 
Configuration File (php.ini) Path /opt/www/conf/php.ini 
ZEND_DEBUG disabled 
Thread Safety disabled 

This program makes use of the Zend Scripting Language Engine:
Zend Engine v1.1.1, Copyright (c) 1998-2001 Zend Technologies
 


--------------------------------------------------------------------------------

Configuration
PHP Core 
Directive Local Value Master Value 
allow_call_time_pass_reference
 On On 
allow_url_fopen
 1 1 
always_populate_raw_post_data
 0 0 
arg_separator.input
 & & 
arg_separator.output
 & & 
asp_tags
 Off Off 
auto_append_file
 no value no value 
auto_prepend_file
 no value no value 
browscap
 no value no value 
default_charset
 no value no value 
default_mimetype
 text/html text/html 
define_syslog_variables
 Off Off 
disable_functions
 no value no value 
display_errors
 Off Off 
display_startup_errors
 Off Off 
doc_root
 no value no value 
enable_dl
 On On 
error_append_string
 no value no value 
error_log
 no value no value 
error_prepend_string
 no value no value 
error_reporting
 2039 2039 
expose_php
 Off Off 
extension_dir
 ./ ./ 
file_uploads
 1 1 
gpc_order
 GPC GPC 
highlight.bg
 #FFFFFF #FFFFFF 
highlight.comment
 #FF9900 #FF9900 
highlight.default
 #0000CC #0000CC 
highlight.html
 #000000 #000000 
highlight.keyword
 #006600 #006600 
highlight.string
 #CC0000 #CC0000 
html_errors
 On On 
ignore_user_abort
 Off Off 
implicit_flush
 Off Off 
include_path
 .:/opt/www/lib/php .:/opt/www/lib/php 
log_errors
 Off Off 
magic_quotes_gpc
 On On 
magic_quotes_runtime
 Off Off 
magic_quotes_sybase
 Off Off 
max_execution_time
 30 30 
open_basedir
 no value no value 
output_buffering
 no value no value 
output_handler
 no value no value 
post_max_size
 8M 8M 
precision
 14 14 
register_argc_argv
 On On 
register_globals
 On On 
safe_mode
 Off Off 
safe_mode_exec_dir
 no value no value 
safe_mode_gid
 Off Off 
safe_mode_include_dir
 no value no value 
sendmail_from
 me@localhost.com me@localhost.com 
sendmail_path
 /usr/sbin/sendmail -t -i  /usr/sbin/sendmail -t -i  
short_open_tag
 On On 
SMTP
 localhost localhost 
sql.safe_mode
 Off Off 
track_errors
 Off Off 
upload_max_filesize
 2M 2M 
upload_tmp_dir
 no value no value 
user_dir
 no value no value 
variables_order
 EGPCS EGPCS 
xmlrpc_error_number
 0 0 
xmlrpc_errors
 Off Off 
y2k_compliance
 Off Off 


xml
XML Support active 
XML Namespace Support active 
EXPAT Version 1.95.2 


standard
Regex Library Bundled library enabled 
Dynamic Library Support enabled 
Path to sendmail /usr/sbin/sendmail -t -i  

Directive Local Value Master Value 
assert.active
 1 1 
assert.bail
 0 0 
assert.callback
 no value no value 
assert.quiet_eval
 0 0 
assert.warning
 1 1 
safe_mode_allowed_env_vars
 PHP_ PHP_ 
safe_mode_protected_env_vars
 LD_LIBRARY_PATH LD_LIBRARY_PATH 
session.use_trans_sid
 1 1 
url_rewriter.tags
 a=href,area=href,frame=src,input=src,form=fakeentry a=href,area=href,frame=src,input=src,form=fakeentry 


session
Session Support enabled 

Directive Local Value Master Value 
session.auto_start
 Off Off 
session.cache_expire
 180 180 
session.cache_limiter
 nocache nocache 
session.cookie_domain
 no value no value 
session.cookie_lifetime
 0 0 
session.cookie_path
 / / 
session.cookie_secure
 Off Off 
session.entropy_file
 no value no value 
session.entropy_length
 0 0 
session.gc_maxlifetime
 1800 1800 
session.gc_probability
 100 100 
session.name
 ID ID 
session.referer_check
 no value no value 
session.save_handler
 files files 
session.save_path
 /tmp /tmp 
session.serialize_handler
 php php 
session.use_cookies
 On On 


posix
Revision $Revision: 1.33.2.1 $ 


pcre
PCRE (Perl Compatible Regular Expressions) Support enabled 
PCRE Library Version 3.4 22-Aug-2000 


mysql
MySQL Support enabled 
Active Persistent Links 1 
Active Links 1 
Client API version 3.23.41 
MYSQL_MODULE_TYPE external 
MYSQL_SOCKET /tmp/mysql.sock 
MYSQL_INCLUDE -I/opt/mysql/include/mysql 
MYSQL_LIBS -L/opt/mysql/lib/mysql -lmysqlclient -L/usr/lib -z 

Directive Local Value Master Value 
mysql.allow_persistent
 On On 
mysql.default_host
 no value no value 
mysql.default_password
 no value no value 
mysql.default_port
 no value no value 
mysql.default_socket
 no value no value 
mysql.default_user
 no value no value 
mysql.max_links
 Unlimited Unlimited 
mysql.max_persistent
 Unlimited Unlimited 


gd
GD Support enabled 
GD Version between 1.3 and 1.6.1 
GIF Read Support enabled 
GIF Create Support enabled 


zlib
ZLib Support enabled 
'zlib:' fopen wrapper enabled 
Compiled Version 1.1.3 
Linked Version 1.1.3 


apache
APACHE_INCLUDE   
APACHE_TARGET   
Apache Version Apache/1.3.20 
Apache Release 10320100 
Apache API Version 19990320 
Hostname:Port h118.starbak.net:80 
User/Group nobody(99)/99 
Max Requests Per Child: 0 - Keep Alive: on - Max Per Connection: 100 
Timeouts Connection: 300 - Keep-Alive: 15 
Server Root /opt/www 
Loaded Modules mod_asf, mod_php4, mod_ssl, mod_setenvif, mod_so, mod_auth, mod_access, mod_rewrite, mod_alias, mod_userdir, mod_actions, mod_imap, mod_asis, mod_cgi, mod_dir, mod_autoindex, mod_include, mod_status, mod_negotiation, mod_mime, mod_log_config, mod_env, http_core 

Directive Local Value Master Value 
child_terminate
 0 0 
engine
 1 1 
last_modified
 0 0 
xbithack
 0 0 


Apache Environment
Variable Value 
DOCUMENT_ROOT /opt/www/htdocs/catalog 
HTTP_ACCEPT image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-mediadna-xdna, application/x-mediadna-mdna, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, */* 
HTTP_ACCEPT_ENCODING gzip, deflate 
HTTP_ACCEPT_LANGUAGE en-us 
HTTP_CONNECTION Keep-Alive 
HTTP_COOKIE administrator_redial=a%3A9%3A%7Bs%3A9%3A%22call_name%22%3Bs%3A7%3A%22Default%22%3Bs%3A11%3A%22call_number%22%3Bs%3A12%3A%2263.144.91.22%22%3Bs%3A12%3A%22call_bitrate%22%3Bs%3A3%3A%22512%22%3Bs%3A11%3A%22call_format%22%3Bs%3A1%3A%222%22%3Bs%3A10%3A%22slidesetid%22%3Bs%3A1%3A%220%22%3Bs%3A14%3A%22record_options%22%3Bs%3A1%3A%220%22%3Bs%3A13%3A%22security_live%22%3Bs%3A1%3A%221%22%3Bs%3A15%3A%22security_replay%22%3Bs%3A1%3A%221%22%3Bs%3A17%3A%22security_password%22%3BN%3B%7D 
HTTP_HOST h118 
HTTP_USER_AGENT Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Q312461) 
PATH /sbin:/usr/sbin:/bin:/usr/bin:/usr/X11R6/bin 
REMOTE_ADDR 63.144.91.91 
REMOTE_PORT 3503 
SCRIPT_FILENAME /opt/www/htdocs/catalog/phpinfo.php 
SCRIPT_URI http://h118.starbak.net/phpinfo.php 
SCRIPT_URL /phpinfo.php 
SERVER_ADDR 63.144.91.118 
SERVER_ADMIN root@HOSTNAME 
SERVER_NAME h118.starbak.net 
SERVER_PORT 80 
SERVER_SIGNATURE <ADDRESS>Apache/1.3.20 Server at h118.starbak.net Port 80</ADDRESS>
 
SERVER_SOFTWARE Apache/1.3.20 (Unix) mod_ssl/2.8.4 OpenSSL/0.9.6b 
GATEWAY_INTERFACE CGI/1.1 
SERVER_PROTOCOL HTTP/1.1 
REQUEST_METHOD GET 
QUERY_STRING   
REQUEST_URI /phpinfo.php 
SCRIPT_NAME /phpinfo.php 


HTTP Headers Information
HTTP Request Headers 
HTTP Request GET /phpinfo.php HTTP/1.1 
Accept image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-mediadna-xdna, application/x-mediadna-mdna, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, */* 
Accept-Encoding gzip, deflate 
Accept-Language en-us 
Connection Keep-Alive 
Cookie administrator_redial=a%3A9%3A%7Bs%3A9%3A%22call_name%22%3Bs%3A7%3A%22Default%22%3Bs%3A11%3A%22call_number%22%3Bs%3A12%3A%2263.144.91.22%22%3Bs%3A12%3A%22call_bitrate%22%3Bs%3A3%3A%22512%22%3Bs%3A11%3A%22call_format%22%3Bs%3A1%3A%222%22%3Bs%3A10%3A%22slidesetid%22%3Bs%3A1%3A%220%22%3Bs%3A14%3A%22record_options%22%3Bs%3A1%3A%220%22%3Bs%3A13%3A%22security_live%22%3Bs%3A1%3A%221%22%3Bs%3A15%3A%22security_replay%22%3Bs%3A1%3A%221%22%3Bs%3A17%3A%22security_password%22%3BN%3B%7D 
Host h118 
User-Agent Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Q312461) 
HTTP Response Headers 
Keep-Alive timeout=15, max=100 
Connection Keep-Alive 
Transfer-Encoding chunked 
Content-Type text/html 


Additional Modules


Environment
Variable Value 
INIT_VERSION sysvinit-2.77 
previous N 
TERM linux 
HOSTTYPE sparc 
PATH /sbin:/usr/sbin:/bin:/usr/bin:/usr/X11R6/bin 
CONSOLE /dev/console 
HOME / 
PREVLEVEL N 
RUNLEVEL 3 
SHELL /bin/bash 
runlevel 3 
OSTYPE Linux 
SHLVL 2 
_ /opt/www/bin/httpd 


PHP Variables
Variable Value 
PHP_SELF /phpinfo.php 
_COOKIE["administrator_redial"] a:9:{s:9:\"call_name\";s:7:\"Default\";s:11:\"call_number\";s:12:\"63.144.91.22\";s:12:\"call_bitrate\";s:3:\"512\";s:11:\"call_format\";s:1:\"2\";s:10:\"slidesetid\";s:1:\"0\";s:14:\"record_options\";s:1:\"0\";s:13:\"security_live\";s:1:\"1\";s:15:\"security_replay\";s:1:\"1\";s:17:\"security_password\";N;}  
_SERVER["DOCUMENT_ROOT"] /opt/www/htdocs/catalog  
_SERVER["HTTP_ACCEPT"] image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-mediadna-xdna, application/x-mediadna-mdna, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, */*  
_SERVER["HTTP_ACCEPT_ENCODING"] gzip, deflate  
_SERVER["HTTP_ACCEPT_LANGUAGE"] en-us  
_SERVER["HTTP_CONNECTION"] Keep-Alive  
_SERVER["HTTP_COOKIE"] administrator_redial=a%3A9%3A%7Bs%3A9%3A%22call_name%22%3Bs%3A7%3A%22Default%22%3Bs%3A11%3A%22call_number%22%3Bs%3A12%3A%2263.144.91.22%22%3Bs%3A12%3A%22call_bitrate%22%3Bs%3A3%3A%22512%22%3Bs%3A11%3A%22call_format%22%3Bs%3A1%3A%222%22%3Bs%3A10%3A%22slidesetid%22%3Bs%3A1%3A%220%22%3Bs%3A14%3A%22record_options%22%3Bs%3A1%3A%220%22%3Bs%3A13%3A%22security_live%22%3Bs%3A1%3A%221%22%3Bs%3A15%3A%22security_replay%22%3Bs%3A1%3A%221%22%3Bs%3A17%3A%22security_password%22%3BN%3B%7D  
_SERVER["HTTP_HOST"] h118  
_SERVER["HTTP_USER_AGENT"] Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Q312461)  
_SERVER["PATH"] /sbin:/usr/sbin:/bin:/usr/bin:/usr/X11R6/bin  
_SERVER["REMOTE_ADDR"] 63.144.91.91  
_SERVER["REMOTE_PORT"] 3503  
_SERVER["SCRIPT_FILENAME"] /opt/www/htdocs/catalog/phpinfo.php  
_SERVER["SCRIPT_URI"] http://h118.starbak.net/phpinfo.php  
_SERVER["SCRIPT_URL"] /phpinfo.php  
_SERVER["SERVER_ADDR"] 63.144.91.118  
_SERVER["SERVER_ADMIN"] root@HOSTNAME  
_SERVER["SERVER_NAME"] h118.starbak.net  
_SERVER["SERVER_PORT"] 80  
_SERVER["SERVER_SIGNATURE"] <ADDRESS>Apache/1.3.20 Server at h118.starbak.net Port 80</ADDRESS>
  
_SERVER["SERVER_SOFTWARE"] Apache/1.3.20 (Unix) mod_ssl/2.8.4 OpenSSL/0.9.6b  
_SERVER["GATEWAY_INTERFACE"] CGI/1.1  
_SERVER["SERVER_PROTOCOL"] HTTP/1.1  
_SERVER["REQUEST_METHOD"] GET  
_SERVER["QUERY_STRING"]   
_SERVER["REQUEST_URI"] /phpinfo.php  
_SERVER["SCRIPT_NAME"] /phpinfo.php  
_SERVER["PATH_TRANSLATED"] /opt/www/htdocs/catalog/phpinfo.php  
_SERVER["PHP_SELF"] /phpinfo.php  
_SERVER["argv"] Array
(
)

  
_SERVER["argc"] 0  
_ENV["INIT_VERSION"] sysvinit-2.77  
_ENV["previous"] N  
_ENV["TERM"] linux  
_ENV["HOSTTYPE"] sparc  
_ENV["PATH"] /sbin:/usr/sbin:/bin:/usr/bin:/usr/X11R6/bin  
_ENV["CONSOLE"] /dev/console  
_ENV["HOME"] /  
_ENV["PREVLEVEL"] N  
_ENV["RUNLEVEL"] 3  
_ENV["SHELL"] /bin/bash  
_ENV["runlevel"] 3  
_ENV["OSTYPE"] Linux  
_ENV["SHLVL"] 2  
_ENV["_"] /opt/www/bin/httpd