PHP configuration file Detailed php.ini

[PHP]
; PHP is also a constantly evolving tool, and its functionality is constantly being truncated.
; And PHP.ini's settings change can reflect a considerable change,
; It's good to study php.ini before using the new PHP version.

;;;;;;;;;;;;;;;;;;;
; about this document;
;;;;;;;;;;;;;;;;;;;

; This file controls many aspects of PHP's view. In order for PHP to read this file, it must be named
; ' PHP.ini '. PHP will look for the file in these places: current working directory; environment variable PHPRC
; The path specified at compile time.
; Under Windows, the path at compile time is the Windows installation directory.
; In command-line mode, the php.ini lookup path can be substituted with the-c parameter.

; The syntax of the file is very simple. Blank characters and semicolons '; ' The starting line is simply ignored (as you might
; guessed). Chapter headings (For example: [Foo]) are also simply ignored, even though they may be
in the future;
;
; indicates that the following syntax is specified:
; indicates identifier = value
; directive = value
; Indicates that the identifier is case-sensitive *-Foo=bar differs from foo = bar.
;
; value can be a string, a number, a PHP constant (such as: E_all or M_PI), the INI constant in the
, a (on, Off, True, False, Yes, No and None), or an expression
; (such as: E_all & ~e_notice), or a string enclosed in quotation marks ("foo").
;
; INI file is limited to bitwise operators and parentheses.
; | bitwise OR
; & Bitwise AND
; ~ bitwise not
;. Boolean not
;
; Boolean flag available 1, ON, True or Yes These values are in the open state.
; they can be 0, off, False, or No. These values are placed in the off state.
;
; An empty string can be used after the equal sign to not write anything, or with the None keyword:
;
; foo =; set Foo to an empty string
; foo = none; set Foo to an empty string
; foo = "None"; put Foo As String ' None '
;
; If you use constants in your value settings, these constants belong to the extended library of dynamic push-in (not PHP extensions, which is
; Zend extension), you can only use these constants after you have transferred the lines of these extensions * *.
;
; All values set in the Php.ini-dist file are the same as the built-in defaults (that is, if php.ini
is not used or if you delete the lines, the default values are the same).

;;;;;;;;;;;;;;;;;;;;
; Language Options;
;;;;;;;;;;;;;;;;;;;;

Engine = On
; Makes PHP scripting language engine (PHP scripting language Engine) valid under Apache.
Short_open_tag = On
; Allow tags to be recognized.
Asp_tags = Off
; Allow Asp-style tags
Precision = 14
; Number of significant digits when floating-point type is displayed

Y2k_compliance = Off
; Whether to open 2000 adaptation (may cause problems in non-Y2K adapted browsers)

output_buffering = Off
; The output cache allows you to send headers (headers, including cookies) even after the output body content.
; The cost is that the output layer slows down a little bit. You can use output caching to open the output cache at run time.
; Alternatively, set the indicator to on to make the output cache for all files open.
Output_handler =; You can redirect all the output of your script to a function,
; Doing so can be useful for handling or logging it.
; For example, if you set this output_handler to "Ob_gzhandler",
; The output is transparently compressed for a browser that supports gzip or deflate encoding.
; Set an output processor to automatically turn on the output buffer.

Implicit_flush = Off
; Forcing flush (refresh) allows PHP to tell the output layer to automatically refresh its data after each output block.
; This is equivalent to calling the flush () function after each print () or echo () call and each HTML block.
; Opening this setting causes serious runtime conflicts and is recommended to be opened only during the debug process.

Allow_call_time_pass_reference = On
; Whether to allow arguments to be passed by reference when forcing a function call. This approach has been protested,
; and may no longer be supported in future versions of Php/zend.
; Encouraged to specify which parameters are passed by reference in the function declaration.
; You are encouraged to try to close this option and confirm that your script still works to ensure that in future versions of the language
; They can still work. (You'll get a warning every time you use this feature, and the argument will be by value instead of by reference
; Delivery).

; Safe Mode
Safe_mode = Off
Safe_mode_exec_dir =
Safe_mode_allowed_env_vars = Php_
; ？ Setting Certain environment variables
; ？ May is a potential security breach.
; The indicator contains a comma-delimited list of prefixes. In Safe mode, users can only replace
; The value of the environment variable that begins with the prefix listed here.
; By default, users will only be able to set environment variables that start with PHP_ (for example, Php_foo=bar).
; Note: If this instruction is empty, PHP will let the user change any environment variable!

Safe_mode_protected_env_vars = Ld_library_path
; This instruction contains a comma-delimited list of environment variables that the end user will not be able to change with putenv ().
; These variables are protected even when the Safe_mode_allowed_env_vars is set to allow.

Disable_functions =
; This directive allows you to invalidate a particular function for security reasons.
; It accepts a comma-delimited list of function names.
; This instruction * is not affected by the open security mode.

; The color of the syntax highlighting mode.
; You can work as long as you can accept something.

highlight.string = #DD0000
Highlight.comment = #FF8000
Highlight.keyword = #007700
highlight.bg = #FFFFFF
Highlight.default = #0000BB
highlight.html = #000000

; Misc Miscellaneous
expose_php = Off
; Decide whether PHP will indicate the fact that it is installed on the server (for example: add it-php-to the Web service
; The signal sent).
; (My personal opinion, in the presence of what power-by header, turn this off.) ）
; It will not be a security threat, but it makes it possible to check if PHP is installed on your server.

;;;;;;;;;;;;;;;;;;;
; Resource Limits;
;;;;;;;;;;;;;;;;;;;

Max_execution_time = 30; Maximum execution time per script, per second
Memory_limit = 8388608; The maximum amount of memory a script can use (this is 8MB)

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Error handling and logging;
; Error control and registration;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; The error report is bitwise. Or add up the numbers to get the error report level you want.
; E_all-All errors and warnings
; E_error-Fatal Run-time error
; E_warning-run-time warning (non-fatal error)
; E_parse-Compile-time parse error
; E_notice-Runtime Reminders (these are often caused by bugs in your code,
, or it may be intentional behavior. (for example, an uninitialized variable is automatically initialized to a
The fact of an empty string uses an uninitialized variable)

; E_core_error-fatal error occurred during initialization of PHP startup
; E_core_warning-A warning (non-fatal error) that occurred during initialization of PHP startup
; E_compile_error-Compile-time fatal error
; E_compile_warning-Compile-time warning (non-fatal error)
; E_user_error-error message generated by the user
; E_user_warning-user-generated warning message
; E_user_notice-user-generated reminder message
; example:
; error_reporting = E_all & ~e_notice; show all errors except reminders
; error_reporting = E _compile_error| e_error| E_core_error; Show Error only
Error_reporting = E_all & ~e_notice; show all errors except reminder
Display_errors = on; Display error message (as part of output)
; in final release W On the EB site, it is strongly recommended that you turn off this feature and use the
; error log instead (see below).
; continue to make display_errors effective in the final published Web site
; Expose some information about security, such as the file path on your Web service,
, your database planning, or other information.
Display_startup_errors = Off; even when Display_erroes is open, it occurs in PHP's boot step
; The error is not displayed.
; It is strongly recommended to keep the display_startup_errors closed,
except in the process of error modification.
Log_errors = Off; errors are logged in the log file (server-specified log, stderr standard error output, or Error_log (below))
; As stated above, it is strongly recommended that you log errors in the final published Web site by logging the error
; Replace the direct error output.

Track_errors = OFF; Save most recent error/warning message to Variable $php _errormsg (Boolean)
; error_prepend_string = ""; String to output before the error message
; error_append_string = ""; The string to output after the error message
; error_log = filename; Logging the error log in the specified file
; error_log = syslog; Logging error log in Syslog (NT event Log, Windows 95 is not valid)
warn_plus_overloading = OFF; Warning when ' + ' is used for strings

;;;;;;;;;;;;;;;;;
; Data handling;
;;;;;;;;;;;;;;;;;
Variables_order = "Egpcs"; This instruction describes the PHP record
; GET, POST, Cookie, environment and built-in the order of these variables.
; (represented by G, P, C, E & S, usually referred to as egpcs or GPC).
; The new value replaces the old value by a left-to-right record.

Register_globals = on; Whether to register these egpcs variables as global variables.
; If you don't want the user data to be out of scope, you might want to close it.
; It's more meaningful to connect with track_vars-so you can get through
; $HTTP _*_vars[] Array accesses all the GPC variables.

REGISTER_ARGC_ARGV = on; This instruction tells PHP whether to declare argv and ARGC variables
; (Note: Here argv is an array, ARGC is the number of variables)
; (which contains data from the Get method).
; If you don't want to use these variables, you should turn it off to improve performance.

Track_vars = on; Make $http_*_vars[] Array valid, here * in use
; ENV, POST, GET, COOKIE or server replace
Post_max_size = 8M; The maximum size of post data that PHP will accept.

Gpc_order = "GPC"; The instruction was objected to. Replace with Variables_order.

; Magic Quotes
MAGIC_QUOTES_GPC = on; Use the Magic reference in the input Get/post/cookie data
; (This is the original, hehe, the so-called magic quotes should be used to escape multibyte in the quoted control characters, such as ' .... ）
Magic_quotes_runtime= Off; Use a magic reference to the data generated at run time,
; For example: data obtained with SQL queries, data obtained with the EXEC () function, etc.
Magic_quotes_sybase = OFF; Use Sybase as a magic reference ("Out of the way" instead of ')

; Automatically add files before and after a PHP document
Auto_prepend_file =
Auto_append_file =

; Like 4.04B4, PHP defaults to the "Content-type:" header to output a character encoding.
; Invalidates the output character set as long as it is set to null.
; The built-in default value for PHP is text/html
Default_mimetype = "Text/html"
;d efault_charset = "Iso-8859-1"

;;;;;;;;;;;;;;;;;;;;;;;;;
; Paths and directories;
;;;;;;;;;;;;;;;;;;;;;;;;;
include_path =; Include path settings, UNIX: "/path1:/path2" Windows: "\path1;\path2"
Doc_root =; The root path of the PHP page, valid only when not empty
User_dir =; Tell PHP which directory to search for when opening a script with/~username, only valid when not empty
; upload_tmp_dir =; Temporary directory for files uploaded with HTTP protocol (use system default if not specified)
Upload_max_filesize = 2097152; File upload is limited to 2 Meg by default
Extension_dir = c:\php\; A directory that holds the Loadable Expansion Library (module)
ENABLE_DL = on; Whether to make DL () valid.
; The DL () function on a multithreaded server * does not work well,
; For example, IIS or Zeus, and on which it is disabled by default

;;;;;;;;;;;;;;;;
; File uploads;
;;;;;;;;;;;;;;;;
File_uploads = on; Whether to allow HTTP mode file upload
; upload_tmp_dir =; Temp directory for files uploaded by HTTP (use system default if not specified)
Upload_max_filesize = 2M; Maximum license size for uploaded files

; Fopen wrappers;
;;;;;;;;;;;;;;;;;;
Allow_url_fopen = on; Whether to allow URLs as http:. or the file as ftp: ...

;;;;;;;;;;;;;;;;;;;;;;
; Dynamic expansion;
; Dynamic Extensions;
;;;;;;;;;;;;;;;;;;;;;;
; If you want an extension library to load automatically, use the following syntax:
; Extension=modulename.extension
; For example, on Windows,
; Extension=msql.dll
; or under UNIX,
; Extension=msql.so
; Note that this should only be the name of the module and does not require directory information to be placed inside.
; Specify the location of the extension library with the extension_dir above.

; Windows Extensions
; Extension=php_nsmail.dll
Extension=php_calendar.dll
; Extension=php_dbase.dll
; Extension=php_filepro.dll
Extension=php_gd.dll
; Extension=php_dbm.dll
; Extension=php_mssql.dll
; Extension=php_zlib.dll
; Extension=php_filepro.dll
; Extension=php_imap4r2.dll
; Extension=php_ldap.dll
; Extension=php_crypt.dll
; Extension=php_msql2.dll
; Extension=php_odbc.dll
; Note that MySQL support is now built-in, so it's not necessary to use its DLL

;;;;;;;;;;;;;;;;;;;
; module settings;
; Module Settings;
;;;;;;;;;;;;;;;;;;;

[Syslog]
Define_syslog_variables = OFF; Whether to define various system log variables
; such as: $LOG _pid, $LOG _cron, and so on.
; Turning it off is a good idea to improve efficiency.
; At run time, you can call the function define_syslog_variables () to define these variables

[Mail Function]
SMTP = localhost; only for Win32 systems
Sendmail_from = [email protected]; only for Win32 systems
; sendmail_path =; for Unix only, it can also support parameters (default is ' sendmail-t-i ')

[Debugger]
Debugger.host = localhost
Debugger.port = 7869
debugger.enabled = False

[Logging]
; These configurations indicate the logging mechanism for the sample.
; Look at examples/readme.logging to get more explanations.
; Logging.method = db
; logging.directory =/path/to/log/directory

[Java]
; Java.class.path =. \php_java.jar
; java.home = C:\jdk
; java.library = C:\jdk\jre\bin\hotspot\jvm.dll
; Java.library.path =. \

[SQL]
Sql.safe_mode = Off

[ODBC]
; uodbc.default_db = not yet implemented
; Uodbc.default_user = not yet implemented
; UODBC.DEFAULT_PW = Not yet implemented
Uodbc.allow_persistent = on; Allow or disallow persistent connection
Uodbc.check_persistent = on; Check if the connection is also available before reuse
UO Dbc.max_persistent =-1; The maximum number of persistent connections. -1 for unrestricted
Uodbc.max_links =-1; Maximum number of connections (persistent and non-persistent). -1 for unrestricted
UODBC.DEFAULTLRL = 4096; controls the field of type LONG. Returns the number of bytes of the variable, and 0 represents the pass (? ) 0 means passthru
Uodbc.defaultbinmode = 1; control binary data. 0 stands for????? Handling of binary data. 0 means passthru, 1 return as IS, 2 convert to char
; see the documentation for Odbc_binmode and Odbc_longreadlen for UODBC.DEFAULTLRL and UO Dbc.defaultbinmode's explanation.

[MySQL]
Mysql.allow_persistent = on; Allow or disallow persistent connections
Mysql.max_persistent =-1; The maximum number of persistent connections. -1 means no limit
Mysql.max_links =-1; The maximum number of connections (persistent and non-persistent). -1 means no limit
Mysql.default_port =; mysql_connect () default port used, if not set, mysql_connect ()
; The variable will be used $MYSQL _tcp_port, or the MYSQL-TCP entry under/etc/services (Unix),
; Or in the compilation is defined by the Mysql_port (in this order)
; Win32 environment, only mysql_port will be checked.
Mysql.default_socket =; The default socket name for the local MYSQL connection. Empty, use MYSQL built-in values

Mysql.default_host =; Mysql_connect () Default host (not available in safe mode)
Mysql.default_user =; mysql_connect () User name used by default (not valid in Safe mode)
Mysql.default_password =; mysql_connect () default password used (invalid in safe mode)
; Note that saving passwords under this file is usually a bad * idea
; * Any user with PHP access can run
; ' Echo cfg_get_var (' Mysql.default_password ') ' to show that password!
; And of course, any user who has read the file's power can see that password.

[MSQL]
Msql.allow_persistent = on; Allow or disallow persistent connections
Msql.max_persistent =-1; The maximum number of persistent connections. -1 means no limit
Msql.max_links =-1; The maximum number of connections (persistent and non-persistent). -1 means no limit

[Postgressql]
Pgsql.allow_persistent = on; Allow or disallow persistent connections
Pgsql.max_persistent =-1; The maximum number of persistent connections. -1 means no limit
Pgsql.max_links =-1; The maximum number of connections (persistent and non-persistent). -1 means no limit

[Sybase]
Sybase.allow_persistent = on; Allow or disallow persistent connections
Sybase.max_persistent =-1; The maximum number of persistent connections. -1 means no limit
Sybase.max_links =-1; The maximum number of connections (persistent and non-persistent). -1 means no limit
; sybase.interface_file = "/usr/sybase/interfaces"
Sybase.min_error_severity = 10; Minimum severity of errors displayed
Sybase.min_message_severity = 10; Minimum importance of the displayed message
Sybase.compatability_mode = OFF; Mode compatible with older versions of PHP 3.0. If turned on, this will cause PHP to automatically
; Give them the type of Sybase based on the results,
; Instead of treating them all as strings.
; This compatibility mode will not be kept forever,
; So put your code in the necessary modifications,
; and closes the item.

[SYBASE-CT]
Sybct.allow_persistent = on; Allow or disallow persistent connections
Sybct.max_persistent =-1; The maximum number of persistent connections. -1 means no limit
Sybct.max_links =-1; The maximum number of connections (persistent and non-persistent). -1 means no limit
Sybct.min_server_severity = 10; Minimum severity of errors displayed
Sybct.min_client_severity = 10; Minimum importance of the displayed message

[Bcmath]
Bcmath.scale = 0; The number of 100 decimal digits used for all Bcmath functions is number of decimal digits for all Bcmath functions

[Browscap]
; browscap = Extra/browscap.ini
Browscap = C:\WIN\SYSTEM\inetsrv\browscap.ini
[Informix]
Ifx.default_host =; Ifx_connect () Default host (not available in safe mode)
Ifx.default_user =; Ifx_connect () User name used by default (not valid in Safe mode)
Ifx.default_password =; Ifx_connect () default password used (invalid in safe mode)
Ifx.allow_persistent = on; Allow or disallow persistent connections
Ifx.max_persistent =-1; The maximum number of persistent connections. -1 means no limit
Ifx.max_links =-1; The maximum number of connections (persistent and non-persistent). -1 means no limit
Ifx.textasvarchar = 0; If open, the Select State character returns the contents of a ' text blob ' field instead of its ID
Ifx.byteasvarchar = 0; If open, the Select State character returns the contents of a ' byte blob ' field instead of its ID
Ifx.charasvarchar = 0; Track the space stripped from the fixed-length word Fulieri.
; may be valid for Informix SE users.
Ifx.blobinfile = 0; If open, the contents of text and byte blobs are exported to a file
; Instead of saving to memory.
Ifx.nullformat = 0; Null (NULL) is returned as an empty field, unless it is set to 1.
; In this case (1), NULL is returned as a string null.

[Session]
Session.save_handler = files; control mode for saving/retrieving data
Session.save_path = C:\win\temp; Parameters that are passed to the controller when the Save_handler is set to a file,
; This is the path where the data file will be saved.
Session.use_cookies = 1; Whether to use cookies
Session.name = Phpsessid
; The name of the session used in the cookie.
Session.auto_start = 0; Initializing session at request startup
Session.cookie_lifetime = 0; The time to save the cookie in seconds,
; or 0 o'clock until the browser is restarted
Session.cookie_path =/; Valid path for cookies
Session.cookie_domain =; The valid domain of the cookie
Session.serialize_handler = PHP; The controller used to connect the data
; PHP is the standard controller for PHP.
session.gc_probability = 1; ' Garbage collection (defragmentation) ' process by percentage
; The possibility of starting each time the session is initialized.
Session.gc_maxlifetime = 1440; After the number of seconds referred to here, the saved data will be treated as
; ' Fragment (garbage) ' and cleared by the GC process.
Session.referer_check =; Check for HTTP references to invalidate IDs that are included in the additional URLs
session.entropy_length = 0; How many bytes are read from a file
Session.entropy_file =; Specify the session ID to be established here
; Session.entropy_length = 16
; Session.entropy_file =/dev/urandom
Session.cache_limiter = NoCache; Set to {Nocache,private,public} to determine the HTTP
; Caching issues
Session.cache_expire = 180; Document is obsolete after n minutes
Session.use_trans_sid = 1; Use the transitional SID support if the compile-time license
; --enable-trans-sid
Url_rewriter.tags = "A=href,area=href,frame=src,input=src,form=fakeentry"

[MSSQL]
; Extension=php_mssql.dll
Mssql.allow_persistent = on; Allow or disallow persistent connections
Mssql.max_persistent =-1; The maximum number of persistent connections. -1 means no limit
Mssql.max_links =-1; The maximum number of connections (persistent and non-persistent). -1 means no limit
Mssql.min_error_severity = 10; Minimum severity of errors displayed
Mssql.min_message_severity = 10; Minimum importance of the displayed message
Mssql.compatability_mode = OFF; Mode compatible with older versions of PHP 3.0.

[Assertion]
; ？？？？？
; assert.active = on;? ASSERT (expr); Active by default
; assert.warning = on; Issue a PHP warning for each failed assertion.
; assert.bail = Off; Don ' t bail out by default.
; assert.callback = 0; User-function to is called if an assertion fails.
; assert.quiet_eval = 0; Eval the expression with current error_reporting (). Set to True if you want Error_reporting (0) around the eval ().

[Ingres II]
Ii.allow_persistent = on; Allow or disallow persistent connections
Ii.max_persistent =-1; The maximum number of persistent connections. -1 means no limit
Ii.max_links =-1; The maximum number of connections (persistent and non-persistent). -1 means no limit
Ii.default_database =; Default database (format: [Node_id::]dbname[/srv_class]
Ii.default_user =; Default User
Ii.default_password =; Default password

[Verisign Payflow Pro]
Pfpro.defaulthost = "test.signio.com"; The default Signio server
Pfpro.defaultport = 443; Default port for connections
Pfpro.defaulttimeout = 30; Default time-out by seconds

; Pfpro.proxyaddress =; IP address of the default proxy (if required)
; Pfpro.proxyport =; The default proxy port
; Pfpro.proxylogon =; Default proxy login (logon username)
; Pfpro.proxypassword =; Password for the default proxy

[Sockets]
Sockets.use_system_read = on; Replace the Php_read () package with the Read () function of the system
; Local Variables: (locally variable)
; Tab-width:4
; End

PHP configuration file Detailed php.ini