Php/docs/ini.core
php.ini
核心配置选项说明
该列表只包含核心的 php.ini
配置选项。扩展的配置选项在各个扩展的文档页面分别被描述。比如,有关 session 的选项可以在
sessions 页面找到。
Note:
以下列出了未设置
php.ini
时的默认值;开发环境和生产环境的php.ini
值可能会有所不同。
语言选项
名字 | 默认 | 可修改范围 | 更新日志 |
---|---|---|---|
short_open_tag | "1" | PHP_INI_PERDIR | |
asp_tags | "0" | PHP_INI_PERDIR | PHP 7.0.0. 中移除。 |
precision | "14" | PHP_INI_ALL | |
serialize_precision | "-1" | PHP_INI_ALL | 在 PHP 5.3.6 以前,默认值为 100。
在 PHP 7.1.0 以前,默认值为 17。 |
y2k_compliance | "1" | PHP_INI_ALL | 在 PHP 5.4.0 中移除该选项。 |
allow_call_time_pass_reference | "1" | PHP_INI_PERDIR | 在 PHP 5.4.0 中移除该选项。 |
disable_functions | "" | 仅仅为 PHP_INI_SYSTEM | |
disable_classes | "" | 仅仅为 php.ini
|
|
exit_on_timeout | "" | PHP_INI_ALL | 从 PHP 5.3.0 起可用。 |
expose_php | "1" | php.ini only
|
|
hard_timeout | "2" | PHP_INI_SYSTEM | 从 PHP 7.1.0 起可用 |
zend.exception_ignore_args | "0" | PHP_INI_ALL | 从 PHP 7.4.0 起可用 |
zend.multibyte | "0" | PHP_INI_ALL | 从 PHP 5.4.0 起可用 |
zend.script_encoding | NULL | PHP_INI_ALL | 从 PHP 5.4.0 起可用 |
zend.detect-unicode | NULL | PHP_INI_ALL | 从 PHP 5.4.0 起可用 |
zend.signal_check | "0" | PHP_INI_SYSTEM | 从 PHP 5.4.0 起可用 |
zend.assertions | "1" | PHP_INI_ALL | 从 PHP 7.0.0 起可用 |
zend.ze1_compatibility_mode | "0" | PHP_INI_ALL | 在 PHP 5.3.0 中移除该选项 |
detect_unicode | "1" | PHP_INI_ALL | 从 PHP 5.1.0起可用。 PHP 5.4.0 起重命名为 zend.detect-unicode。 |
这是配置指令的简短说明。
short_open_tag
boolean决定是否允许使用 PHP 代码开始标志的缩写形式(
<? ?>
)。如果要和 XML 结合使用 PHP,可以禁用此选项以便于嵌入使用<?xml ?>
。否则还可以通过 PHP 来输出,例如:<?php echo '<?xml version="1.0"'; ?>
。如果禁用了,必须使用 PHP 代码开始标志的完整形式(<?php ?>
)。Note:
本指令也会影响到缩写形式
<?=
,它和<? echo
等价。使用此缩写需要short_open_tag
的值为 On。 从 PHP 5.4.0 起,<?=
总是可用的。asp_tags
boolean-
除了通常的
<?php ?>
标志之外还允许使用
ASP 风格的标志 <% %>。这也包括了输出变量值的缩写
<%= $value %>。更多信息见从 HTML 中分离一节。
asp_tags
变更历史版本 说明 7.0.0 从 PHP 中移除。 precision
integer-
浮点数中显示有效数字的位数。
-1
means that an enhanced algorithm for rounding such numbers will be used. serialize_precision
integer-
The number of significant digits stored while serializing floating point numbers.
-1
means that an enhanced algorithm for rounding such numbers will be used. y2k_compliance
boolean- 强制 2000 年兼容(在不兼容的浏览器中会出问题)。
allow_call_time_pass_reference
boolean在函数调用时参数被按照引用传递时是否发出警告。此方法已不被赞成并在 PHP/Zend 未来的版本中很可能不再支持。鼓励使用的方法是在函数定义中指定哪些参数应该用引用传递。鼓励大家尝试关闭此选项并确保脚本能够正常运行,以确保该脚本也能在未来的版本中运行(每次使用此特性都会收到一条警告)。
在函数调用时通过引用传递参数是不推荐的,因为它影响到了代码的整洁。如果函数的参数没有声明作为引用传递,函数可以通过未写入文档的方法修改其参数。要避免其副作用,最好仅在函数声明时指定那个参数需要通过引用传递。
参见引用的解释。
allow_call_time_pass_reference
变更历史版本 说明 5.4.0 从 PHP 中移除。 5.3.0 Emits an E_DEPRECATED
level error.5.0.0 Deprecated, and generates an E_COMPILE_WARNING
level error.expose_php
boolean决定是否暴露 PHP 被安装在服务器上(例如在 Web 服务器的信息头中加上其签名:X-Powered-By: PHP/5.3.7)。 在 PHP 5.5.0 之前,PHP 徽标指南也是公开的,因此将它们追加到 PHP 脚本的 URL 中就会显示相应的徽标(例如, » https://www.php.net/?=PHPE9568F34-D428-11d2-A769-00AA001ACF42)。这也影响了 phpinfo() 的输出,因为当禁用时,PHP 的标志和信用信息将无法显示。
Note:
从 PHP 5.5.0 开始,这些 guid 和 php_logo_guid() 函数已从 PHP 中删除,guid 被替换为数据 URI。 因此,通过在 URL 中添加 guid 来访问 PHP 徽标不再有效。 同样,关闭
expose_php
参数不会影响到在 phpinfo() 中看到 PHP 标志。See also php_logo_guid() and phpcredits().
disable_functions
string本指令可用于禁止某些函数。接受逗号分隔的函数名列表作为参数。
本指令只能设置在
php.ini
中。例如,无法在httpd.conf
中设置。disable_classes
string-
本指令可以使你禁用某些类。用逗号分隔类名。
本指令只能设置在
php.ini
中。例如不能将其设置在httpd.conf
。 zend.assertions
integerWhen set to
1
, assertion code will be generated and executed (development mode). When set to0
, assertion code will be generated but it will be skipped (not executed) at runtime. When set to-1
, assertion code will not be generated, making the assetions zero-cost (production mode).Note:
If a process is started in production mode, zend.assertions cannot be changed at runtime, since the code for assertions was not generated.
If a process is started in development mode, zend.assertions cannot be set to
-1
at runtime.zend.ze1_compatibility_mode
booleanEnable compatibility mode with Zend Engine 1 (PHP 4). It affects the cloning, casting (objects with no properties cast to
false
or 0), and comparing of objects. In this mode, objects are passed by value instead of reference by default.See also the section titled Migrating from PHP 4 to PHP 5.
Warning
This feature has been DEPRECATED and REMOVED as of PHP 5.3.0.
hard_timeout
integerzend.exception_ignore_args
boolean从异常产生的堆栈中排除参数。
zend.multibyte
boolean启用多字节编码的源文件解析功能。启用 zend.multibyte 是使用 SJIS、BIG5 等在多字节字符串数据中包含特殊字符的字符编码所必需的。ISO-8859-1 兼容的编码,如 UTF-8、EUC 等,则不需要这个选项。
启用 zend.multibyte 需要 mbstring 扩展可用。
zend.script_encoding
stringThis value will be used unless a declare(encoding=...) directive appears at the top of the script. When ISO-8859-1 incompatible encoding is used, both zend.multibyte and zend.script_encoding must be used.
Literal strings will be transliterated from zend.script_enconding to mbstring.internal_encoding, as if mb_convert_encoding() would have been called.
zend.detect_unicode
booleanCheck for BOM (Byte Order Mark) and see if the file contains valid multibyte characters. This detection is performed before processing of __halt_compiler(). Available only in Zend Multibyte mode.
zend.signal_check
booleanTo check for replaced signal handlers on shutdown.
exit_on_timeout
boolean这是一个用于 Apache 1 的 mod_php-only 指令,如果 PHP 执行超时,会强制 Apache 子程序退出.这样的超时会导致 Apache 1 内部的 longjmp() 调用,从而使一些扩展处于不一致的状态。通过终止进程,任何未完成的锁或内存将被清理。
资源限制
名字 | 默认 | 可修改范围 | 更新日志 |
---|---|---|---|
memory_limit | "128M" | PHP_INI_ALL | PHP 5.2.0 之前默认为 "8M",之后默认为 "16M" |
这是配置指令的简短说明。
memory_limit
integer设置了一个脚本允许分配的最大内存量,以字节(bytes)为单位。这有助于防止写得不好的脚本吃掉服务器上所有可用的内存。请注意,如果不需要内存限制,请将此指令设置为
-1
。在 PHP 5.2.1 之前的版本,如果要使用这个指令,必须在编译时使用 --enable-memory-limit 参数。在 PHP 5.2.1 之前,如果想要使用函数 memory_get_usage() 和 memory_get_peak_usage(),也会需要这个编译参数。
当使用 int 时, 其值以字节来衡量。还可以使用在FAQ中描述的速记符。
请参阅:max_execution_time。
性能调整
名字 | 默认 | 可修改范围 | 更新日志 |
---|---|---|---|
realpath_cache_size | "4M" | PHP_INI_SYSTEM | PHP 5.1.0 起加入,PHP 7.0.16 和 7.1.2 之前,默认值为 "16K"
|
realpath_cache_ttl | "120" | PHP_INI_SYSTEM | 从 PHP 5.1.0 起可用。 |
Note:
启用 open_basedir 将会 禁用 realpath cache。
这是配置指令的简短说明。
realpath_cache_size
integer设定 PHP 使用的 realpath 缓存的大小。在 PHP 打开很多文件的系统中,这个值应该增加,以优化文件操作的数量。
这里的大小表示存储的路径字符串的总字节数,加上与缓存条目相关的数据大小。这意味着,为了在缓存中存储更长的路径,缓存大小必须更大。这个值不直接控制可以缓存的不同路径的数量。
缓存输入数据所需的大小取决于操作系统。
realpath_cache_ttl
integer缓存给定文件或目录的真实路径信息的持续时间(以秒为单位)。对于很少改变文件的系统,可以考虑增加该值。
数据处理
名字 | 默认 | 可修改范围 | 更新日志 |
---|---|---|---|
arg_separator.output | "&" | PHP_INI_ALL | |
arg_separator.input | "&" | PHP_INI_PERDIR | |
variables_order | "EGPCS" | PHP_INI_PERDIR | PHP <= 5.0.5 可用。 |
request_order | "" | PHP_INI_PERDIR | 从 PHP 5.3.0 起可用。 |
auto_globals_jit | "1" | PHP_INI_PERDIR | 从 PHP 5.0.0 起可用。 |
register_globals | "0" | PHP_INI_PERDIR | PHP 5.4.0 版本被移除。 |
register_argc_argv | "1" | PHP_INI_PERDIR | |
register_long_arrays | "1" | PHP_INI_PERDIR | PHP 5.3.0 中被废弃,PHP 5.4.0 中被移除。 |
enable_post_data_reading | "1" | PHP_INI_PERDIR | 从 PHP 5.4.0 起可用。 |
post_max_size | "8M" | PHP_INI_PERDIR | |
auto_prepend_file | NULL | PHP_INI_PERDIR | |
auto_append_file | NULL | PHP_INI_PERDIR | |
default_mimetype | "text/html" | PHP_INI_ALL | |
default_charset | "UTF-8" | PHP_INI_ALL | PHP >= 5.6.0 开始默认为 "UTF-8";PHP < 5.6.0 为空。 |
always_populate_raw_post_data | "0" | PHP_INI_PERDIR | PHP 7.0.0 中被移除。 |
这是配置指令的简短说明。
arg_separator.output
string在 PHP 生成的 URL 中用来分隔参数的分隔符。
arg_separator.input
stringPHP 用于将输入的 URL 解析为变量的分隔符列表。
Note:
本指令中的每一个字符都被视为分隔符!
variables_order
stringSets the order of the EGPCS (
E
nvironment,G
et,P
ost,C
ookie, andS
erver) variable parsing. For example, if variables_order is set to"SP"
then PHP will create the superglobals$_SERVER
and$_POST
, but not create$_ENV
,$_GET
, and$_COOKIE
. Setting to "" means no superglobals will be set.If the deprecated register_globals directive is on, then variables_order also configures the order the
ENV
,GET
,POST
,COOKIE
andSERVER
variables are populated in global scope. So for example if variables_order is set to"EGPCS"
, register_globals is enabled, and both$_GET['action']
and$_POST['action']
are set, then$action
will contain the value of$_POST['action']
asP
comes afterG
in our example directive value.Warning
In both the CGI and FastCGI SAPIs,
$_SERVER
is also populated by values from the environment;S
is always equivalent toES
regardless of the placement ofE
elsewhere in this directive.Note:
The content and order of
$_REQUEST
is also affected by this directive.request_order
stringThis directive describes the order in which PHP registers GET, POST and Cookie variables into the _REQUEST array. Registration is done from left to right, newer values override older values.
If this directive is not set, variables_order is used for
$_REQUEST
contents.Note that the default distribution
php.ini
files does not contain the'C'
for cookies, due to security concerns.auto_globals_jit
booleanWhen enabled, the SERVER, REQUEST, and ENV variables are created when they're first used (Just In Time) instead of when the script starts. If these variables are not used within a script, having this directive on will result in a performance gain.
The PHP directives register_globals, register_long_arrays, and register_argc_argv must be disabled for this directive to have any affect. Since PHP 5.1.3 it is not necessary to have register_argc_argv disabled.
Warning
Usage of SERVER, REQUEST, and ENV variables is checked during the compile time so using them through e.g. variable variables will not cause their initialization.
register_globals
booleanWhether or not to register the EGPCS (Environment, GET, POST, Cookie, Server) variables as global variables.
As of » PHP 4.2.0, this directive defaults to off.
Please read the security chapter on Using register_globals for related information.
Please note that
register_globals
cannot be set at runtime (ini_set()). Although, you can use.htaccess
if your host allows it as described above. An example.htaccess
entry:php_flag register_globals off
.Note:
register_globals
is affected by the variables_order directive.Warning
本特性已自 PHP 5.3.0 起废弃并将自 PHP 5.4.0 起移除。
register_argc_argv
boolean- Tells PHP whether to declare the argv & argc variables (that would contain the GET information). See also command line.
register_long_arrays
boolean-
Tells PHP whether or not to register the deprecated long
$HTTP_*_VARS
type predefined variables. When On (default), long predefined PHP variables like$HTTP_GET_VARS
will be defined. If you're not using them, it's recommended to turn them off, for performance reasons. Instead, use the superglobal arrays, like$_GET
. This directive became available in PHP 5.0.0.Warning
本特性已自 PHP 5.3.0 起废弃并将自 PHP 5.4.0 起移除。
enable_post_data_reading
boolean-
Disabling this option causes
$_POST
and$_FILES
not to be populated. The only way to read postdata will then be through the php://input stream wrapper. This can be useful to proxy requests or to process the POST data in a memory efficient fashion. post_max_size
integerSets max size of post data allowed. This setting also affects file upload. To upload large files, this value must be larger than upload_max_filesize. Generally speaking, memory_limit should be larger than
post_max_size
. 当使用 int 时, 其值以字节来衡量。还可以使用在FAQ中描述的速记符。 If the size of post data is greater than post_max_size, the$_POST
and$_FILES
superglobals are empty. This can be tracked in various ways, e.g. by passing the$_GET
variable to the script processing the data, i.e.<form action="edit.php?processed=1">
, and then checking if$_GET['processed']
is set.Note:
PHP allows shortcuts for byte values, including K (kilo), M (mega) and G (giga). PHP will do the conversions automatically if you use any of these. Be careful not to exceed the 32 bit signed integer limit (if you're using 32bit versions) as it will cause your script to fail.
Changelog for post_max_size
版本 说明 5.3.4 post_max_size
= 0 will not disable the limit when the contenttype is application/x-www-form-urlencoded or is not registered with PHP.
5.3.2 , 5.2.12 Allow unlimited post size by setting post_max_size
to 0.auto_prepend_file
stringSpecifies the name of a file that is automatically parsed before the main file. The file is included as if it was called with the require function, so include_path is used.
The special value
none
disables auto-prepending.auto_append_file
stringSpecifies the name of a file that is automatically parsed after the main file. The file is included as if it was called with the require 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.
default_mimetype
stringBy default, PHP will output a media type using the Content-Type header. To disable this, simply set it to be empty.
PHP's built-in default media type is set to text/html.
default_charset
stringIn PHP 5.6 onwards, "UTF-8" is the default value and its value is used as the default character encoding for htmlentities(), html_entity_decode() and htmlspecialchars() if the
encoding
parameter is omitted. The value ofdefault_charset
will also be used to set the default character set for iconv functions if theiconv.input_encoding
,iconv.output_encoding
andiconv.internal_encoding
configuration options are unset, and for mbstring functions if thembstring.http_input
mbstring.http_output
mbstring.internal_encoding
configuration option is unset.All versions of PHP will use this value as the charset within the default Content-Type header sent by PHP if the header isn't overridden by a call to header().
Setting
default_charset
to an empty value is not recommended.input_encoding
stringAvailable from PHP 5.6.0. This setting is used for multibyte modules such as mbstring and iconv. Default is empty.
output_encoding
stringAvailable from PHP 5.6.0. This setting is used for multibyte modules such as mbstring and iconv. Default is empty.
internal_encoding
stringAvailable from PHP 5.6.0. This setting is used for multibyte modules such as mbstring and iconv. Default is empty. If empty, default_charset is used.
always_populate_raw_post_data
mixedWarning
该功能已在 PHP 5.6.0 中 废弃 ,并在 PHP 7.0.0 中 移除。
If set to
true
, PHP will always populate the$HTTP_RAW_POST_DATA
containing the raw POST data. Otherwise, the variable is populated only when the MIME type of the data is unrecognised.The preferred method for accessing raw POST data is php://input, and
$HTTP_RAW_POST_DATA
is deprecated in PHP 5.6.0 onwards. Settingalways_populate_raw_post_data
to-1
will opt into the new behaviour that will be implemented in a future version of PHP, in which$HTTP_RAW_POST_DATA
is never defined.Regardless of the setting,
$HTTP_RAW_POST_DATA
is not available withenctype="multipart/form-data"
.
See also: magic_quotes_gpc, magic_quotes_runtime, and magic_quotes_sybase.
Paths and Directories
名字 | 默认 | 可修改范围 | 更新日志 |
---|---|---|---|
include_path | ".;/path/to/php/pear" | PHP_INI_ALL | |
open_basedir | NULL | PHP_INI_ALL | PHP_INI_SYSTEM in PHP < 5.3.0 |
doc_root | NULL | PHP_INI_SYSTEM | |
user_dir | NULL | PHP_INI_SYSTEM | |
user_ini.cache_ttl | "300" | PHP_INI_SYSTEM | Available since PHP 5.3.0. |
user_ini.filename | ".user.ini" | PHP_INI_SYSTEM | Available since PHP 5.3.0. |
extension_dir | "/path/to/php" | PHP_INI_SYSTEM | |
extension | NULL | php.ini only
|
|
zend_extension | NULL | php.ini only
|
|
zend_extension_debug | NULL | php.ini only
|
Available before PHP 5.3.0. |
zend_extension_debug_ts | NULL | php.ini only
|
Available before PHP 5.3.0. |
zend_extension_ts | NULL | php.ini only
|
Available before PHP 5.3.0. |
cgi.check_shebang_line | "1" | PHP_INI_SYSTEM | Available since PHP 5.2.0. |
cgi.discard_path | "0" | PHP_INI_SYSTEM | Available since PHP 5.3.0. |
cgi.fix_pathinfo | "1" | PHP_INI_SYSTEM | PHP_INI_ALL prior to PHP 5.2.1. |
cgi.force_redirect | "1" | PHP_INI_SYSTEM | PHP_INI_ALL prior to PHP 5.2.1. |
cgi.nph | "0" | PHP_INI_SYSTEM | Available since PHP 5.3.0. |
cgi.redirect_status_env | NULL | PHP_INI_SYSTEM | PHP_INI_ALL prior to PHP 5.2.1. |
cgi.rfc2616_headers | "0" | PHP_INI_ALL | |
fastcgi.impersonate | "0" | PHP_INI_SYSTEM | PHP_INI_ALL prior to PHP 5.2.1. |
fastcgi.logging | "1" | PHP_INI_SYSTEM | PHP_INI_ALL prior to PHP 5.2.1. |
这是配置指令的简短说明。
include_path
stringSpecifies a list of directories where the require, include, fopen(), file(), readfile() and file_get_contents() 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.PHP considers each entry in the include path separately when looking for files to include. It will check the first path, and if it doesn't find it, check the next path, until it either locates the included file or returns with an
E_WARNING
or anE_ERROR
. You may modify or set your include path at runtime using set_include_path().Example #1 Unix include_path
include_path=".:/php/includes"
Example #2 Windows include_path
include_path=".;c:\php\includes"
Using a
.
in the include path allows for relative includes as it means the current directory. However, it is more efficient to explicitly useinclude './file'
than having PHP always check the current directory for every include.Note:
ENV
variables are also accessible in .ini files. As such it is possible to reference the home directory using${LOGIN}
and${USER}
.Environment variables may vary between Server APIs as those environments may be different.
Example #3 Unix include_path using ${USER} env variable
include_path = ".:${USER}/pear/php"
open_basedir
stringLimit the files that can be accessed by PHP to the specified directory-tree, including the file itself. This directive is NOT affected by whether Safe Mode is turned On or Off.
When a script tries to access the filesystem, for example using include, or fopen(), the location of the file is checked. When the file is outside the specified directory-tree, PHP will refuse to access it. All symbolic links are resolved, so it's not possible to avoid this restriction with a symlink. If the file doesn't exist then the symlink couldn't be resolved and the filename is compared to (a resolved) open_basedir.
open_basedir can affect more than just filesystem functions; for example if
MySQL
is configured to usemysqlnd
drivers,LOAD DATA INFILE
will be affected by open_basedir. Much of the extended functionality of PHP usesopen_basedir
in this way.The special value
.
indicates that the working directory of the script will be used as the base-directory. This is, however, a little dangerous as the working directory of the script can easily be changed with chdir().In
httpd.conf
, open_basedir can be turned off (e.g. for some virtual hosts) the same way as any other configuration directive with "php_admin_value open_basedir none
".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 restriction specified with open_basedir is a directory name since PHP 5.2.16 and 5.3.4. Previous versions used it as a prefix. This means that "
open_basedir = /dir/incl
" also allowed access to "/dir/include
" and "/dir/incls
" if they exist. When you want to restrict access to only the specified directory, end with a slash. For example:open_basedir = /dir/incl/
The default is to allow all files to be opened.
Note:
As of PHP 5.3.0 open_basedir can be tightened at run-time. This means that if open_basedir is set to
/www/
inphp.ini
a script can tighten the configuration to/www/tmp/
at run-time with ini_set(). When listing several directories, you can use thePATH_SEPARATOR
constant as a separator regardless of the operating system.Note:
Using open_basedir will set realpath_cache_size to
0
and thus disable the realpath cache.doc_root
stringPHP's "root directory" on the server. Only used if non-empty. If PHP was not compiled with FORCE_REDIRECT, you should set doc_root if you are running PHP as a CGI under any web server (other than IIS). The alternative is to use the cgi.force_redirect configuration below.
user_ini.cache_ttl
integeruser_ini.filename
stringuser_dir
stringThe base name of the directory used on a user's home directory for PHP files, for example
public_html
.extension_dir
stringIn what directory PHP should look for dynamically loadable extensions. See also: enable_dl, and dl().
extension
stringWhich dynamically loadable extensions to load when PHP starts up.
zend_extension
stringName of dynamically loadable Zend extension (for example XDebug) to load when PHP starts up.
zend_extension_debug
stringVariant of zend_extension for extensions compiled with debug info prior to PHP 5.3.0.
zend_extension_debug_ts
stringVariant of zend_extension for extensions compiled with debug info and thread safety prior to PHP 5.3.0.
zend_extension_ts
stringVariant of zend_extension for extensions compiled with thread safety prior to PHP 5.3.0.
cgi.check_shebang_line
booleanControls whether CGI PHP checks for line starting with
#!
(shebang) at the top of the running script. This line might be needed if the script support running both as stand-alone script and via PHP CGI. PHP in CGI mode skips this line and ignores its content if this directive is turned on.cgi.discard_path
booleanIf this is enabled, the PHP CGI binary can safely be placed outside of the web tree and people will not be able to circumvent .htaccess security.
cgi.fix_pathinfo
booleanProvides real
PATH_INFO
/PATH_TRANSLATED
support for CGI. PHP's previous behaviour was to setPATH_TRANSLATED
toSCRIPT_FILENAME
, and to not grok whatPATH_INFO
is. For more information onPATH_INFO
, see the CGI specs. Setting this to1
will cause PHP CGI to fix its paths to conform to the spec. A setting of zero causes PHP to behave as before. It is turned on by default. You should fix your scripts to useSCRIPT_FILENAME
rather thanPATH_TRANSLATED
.cgi.force_redirect
booleancgi.force_redirect is necessary to provide security running PHP as a CGI under most web servers. Left undefined, PHP turns this on by default. You can turn it off at your own risk.
Note:
Windows Users: When using IIS this option must be turned off. For OmniHTTPD or Xitami the same applies.
cgi.nph
booleanIf cgi.nph is enabled it will force cgi to always sent Status: 200 with every request.
cgi.redirect_status_env
stringIf cgi.force_redirect is turned on, and you are not running under Apache or Netscape (iPlanet) web servers, you may need to set an environment variable name that PHP will look for to know it is OK to continue execution.
Note:
Setting this variable may cause security issues, know what you are doing first.
cgi.rfc2616_headers
intTells PHP what type of headers to use when sending HTTP response code. If it's set to 0, PHP sends a » RFC 3875 "Status:" header that is supported by Apache and other web servers. When this option is set to 1, PHP will send » RFC 2616 compliant headers.
If this option is enabled, and you are running PHP in a CGI environment (e.g. PHP-FPM) you should not use standard RFC 2616 style HTTP status response headers, you should instead use their RFC 3875 equivalent e.g. instead of header("HTTP/1.0 404 Not found"); you should use header("Status: 404 Not Found");
Leave it set to 0 unless you know what you're doing.
fastcgi.impersonate
stringFastCGI under IIS (on WINNT based OS) supports the ability to impersonate security tokens of the calling client. This allows IIS to define the security context that the request runs under. mod_fastcgi under Apache does not currently support this feature (03/17/2002) Set to 1 if running under IIS. Default is zero.
fastcgi.logging
booleanTurns on SAPI logging when using FastCGI. Default is to enable logging.
File Uploads
名字 | 默认 | 可修改范围 | 更新日志 |
---|---|---|---|
file_uploads | "1" | PHP_INI_SYSTEM | |
upload_tmp_dir | NULL | PHP_INI_SYSTEM | |
max_input_nesting_level | 64 | PHP_INI_PERDIR | Available since PHP 5.3.9. |
max_input_vars | 1000 | PHP_INI_PERDIR | Available since PHP 5.3.9. |
upload_max_filesize | "2M" | PHP_INI_PERDIR | |
max_file_uploads | 20 | PHP_INI_SYSTEM | Available since PHP 5.2.12. |
这是配置指令的简短说明。
file_uploads
booleanWhether or not to allow HTTP file uploads. See also the upload_max_filesize, upload_tmp_dir, and post_max_size directives.
upload_tmp_dir
stringThe temporary directory used for storing files when doing file upload. Must be writable by whatever user PHP is running as. If not specified PHP will use the system's default.
If the directory specified here is not writable, PHP falls back to the system default temporary directory. If open_basedir is on, then the system default directory must be allowed for an upload to succeed.
upload_max_filesize
integerThe maximum size of an uploaded file.
当使用 int 时, 其值以字节来衡量。还可以使用在FAQ中描述的速记符。
max_file_uploads
integerThe maximum number of files allowed to be uploaded simultaneously. Starting with PHP 5.3.4, upload fields left blank on submission do not count towards this limit.
General SQL
名字 | 默认 | 可修改范围 | 更新日志 |
---|---|---|---|
sql.safe_mode | "0" | PHP_INI_SYSTEM | Removed in PHP 7.2.0 |
这是配置指令的简短说明。
sql.safe_mode
booleanIf turned on, database connection functions that specify default values will use those values in place of any user-supplied arguments. For details on the default values, see the documentation for the relevant connection functions.
Warning
This feature has been REMOVED as of PHP 7.2.0.
Windows Specific
名字 | 默认 | 可修改范围 | 更新日志 |
---|---|---|---|
windows.show_crt_warning | "0" | PHP_INI_ALL | Available since PHP 5.4.0. |
这是配置指令的简短说明。
windows.show_crt_warning
boolean- This directive shows the Windows CRT warnings when enabled. These warnings were displayed by default until PHP 5.4.0.