You can view the settings of most of the configuration values in
the output of phpinfo().
- auto_append_file
string
Specifies the name of a file that is automatically parsed
after the main file. The file is included as if it was
called with the include() function, so
include_path is used.
The special value none disables auto-appending.
Note: If the script is terminated with exit(),
auto-append will not occur.
- auto_prepend_file
string
Specifies the name of a file that is automatically parsed
before the main file. The file is included as if it was
called with the include() function, so
include_path is used.
The special value none disables auto-prepending.
- cgi_ext
string
- display_errors
boolean
This determines whether errors should be printed to the screen
as part of the HTML output or not.
- doc_root
string
PHP's "root directory" on the server. Only used if
non-empty. If PHP is configured with safe mode, no files outside
this directory are served.
- engine
boolean
This directive is really only useful in the Apache module
version of PHP. It is used by sites that would like to turn
PHP parsing on and off on a per-directory or per-virtual
server basis. By putting php3_engine
off in the appropriate places in the
httpd.conf file, PHP can be enabled or
disabled.
- error_log
string
Name of file where script errors should be logged. If the
special value syslog is used, the errors
are sent to the system logger instead. On UNIX, this means
syslog(3) and on Windows NT it means the event log. The
system logger is not supported on Windows 95.
- error_reporting
integer
Set the error reporting level. The parameter is an integer
representing a bit field. Add the values of the error
reporting levels you want.
Table 4-1. Error Reporting Levels
| bit value | enabled reporting |
|---|
| 1 | normal errors |
| 2 | normal warnings |
| 4 | parser errors |
| 8 | non-critical style-related warnings |
- open_basedir
string
Limit the files that can be opened by PHP to the specified
directory-tree.
When a script tries to open a file with,
for example, fopen or gzopen, the location of the file is
checked. When the file is outside the specified directory-tree,
PHP will refuse to open it. All symbolic links are resolved,
so it's not possible to avoid this restriction with a symlink.
The special value .
indicates that the directory in which the script is stored will
be used as base-directory.
From PHP 3.0.7, it is possible to supply more than one directory.
Under Windows, separate the directories with a semicolon. On all
other systems, separate the directories with a colon. As an Apache
module, open_basedir paths from parent directories are now
automatically inherited.
The default is to allow all files to be opened.
- gpc_order
string
Set the order of GET/POST/COOKIE variable parsing. The
default setting of this directive is "GPC". Setting this to
"GP", for example, will cause PHP to completely ignore cookies
and to overwrite any GET method variables with POST-method
variables of the same name.
- ignore_user_abort
string
Off by default. If changed to On scripts will run to completion even
if the remote client disconnects in the middle. See also
ignore_user_abort().
- include_path
string
Specifies a list of directories where the
require(), include()
and fopen_with_path() functions look for
files. The format is like the system's PATH
environment variable: a list of directories separated with a
colon in UNIX or semicolon in Windows.
Example 4-1. UNIX include_path include_path=.:/home/httpd/php-lib |
Example 4-2. Windows include_path include_path=".;c:\www\phplib" |
The default value for this directive is .
(only the current directory).
- isapi_ext
string
- log_errors
boolean
Tells whether script error messages should be logged to the
server's error log. This option is thus server-specific.
- magic_quotes_gpc
boolean
Sets the magic_quotes state for GPC (Get/Post/Cookie)
operations. When magic_quotes are on, all ' (single-quote),
" (double quote), \ (backslash) and NUL's are escaped
with a backslash automatically. If magic_quotes_sybase is
also on, a single-quote is escaped with a single-quote
instead of a backslash.
- magic_quotes_runtime
boolean
If magic_quotes_runtime is enabled,
most functions that return data from any sort of external
source including databases and text files will have quotes
escaped with a backslash. If
magic_quotes_sybase is also on, a
single-quote is escaped with a single-quote instead of a
backslash.
- magic_quotes_sybase
boolean
If magic_quotes_sybase is also on, a
single-quote is escaped with a single-quote instead of a
backslash if magic_quotes_gpc or
magic_quotes_runtime is enabled.
- max_execution_time
integer
This sets the maximum time in seconds a script is allowed to
take before it is terminated by the parser. This helps
prevent poorly written scripts from tieing up the server.
- memory_limit
integer
This sets the maximum amount of memory in bytes that a script
is allowed to allocate. This helps prevent poorly written
scripts for eating up all available memory on a server.
- nsapi_ext
string
- short_open_tag
boolean
Tells whether the short form (<? ?>of
PHP's open tag should be allowed. If you want to use PHP in
combination with XML, you have to disable this option. If
disabled, you must use the long form of the open tag
(<?php ?>).
- sql.safe_mode
boolean
- track_errors
boolean
If enabled, the last error message will always be present in the
global variable $php_errormsg.
- track_vars
boolean
If enabled, GET, POST and cookie input can be found in the
global associative arrays $HTTP_GET_VARS,
$HTTP_POST_VARS and
$HTTP_COOKIE_VARS, respectively.
- upload_tmp_dir
string
The temporary directory used for storing files when doing
file upload. Must be writable by whatever user PHP is
running as.
- user_dir
string
The base name of the directory used on a user's home
directory for PHP files, for example
public_html.
- warn_plus_overloading
boolean
If enabled, this option makes PHP output a warning when the
plus (+) operator is used on strings.
This is to make it easier to find scripts that need to be
rewritten to using the string concatenator instead
(.).
- sybct.allow_persistent
boolean
Whether to allow persistent Sybase-CT connections.
The default is on.
- sybct.max_persistent
integer
The maximum number of persistent Sybase-CT connections per
process. The default is -1 meaning unlimited.
- sybct.max_links
integer
The maximum number of Sybase-CT connections per process,
including persistent connections. The default is -1 meaning
unlimited.
- sybct.min_server_severity
integer
Server messages with severity greater than or equal to
sybct.min_server_severity will be reported as warnings. This
value can also be set from a script by calling
sybase_min_server_severity(). The default
is 10 which reports errors of information severity or greater.
- sybct.min_client_severity
integer
Client library messages with severity greater than or equal to
sybct.min_client_severity will be reported as warnings. This
value can also be set from a script by calling
sybase_min_client_severity(). The default
is 10 which effectively disables reporting.
- sybct.login_timeout
integer
The maximum time in seconds to wait for a connection attempt
to succeed before returning failure. Note that if
max_execution_time has been exceeded when a connection attempt
times out, your script will be terminated before it can take
action on failure. The default is one minute.
- sybct.timeout
integer
The maximum time in seconds to wait for a select_db or query
operation to succeed before returning failure. Note that if
max_execution_time has been exceeded when am operation times
out, your script will be terminated before it can take action
on failure. The default is no limit.
- sybct.hostname
string
The name of the host you claim to be connecting from, for
display by sp_who. The default is none.
