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Chinese comments on the PHP configuration file PHP.INI_PHP tutorial

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2016-07-13 17:21:50811browse

 

这里非常详细的介绍了php.ini的配置文件.很多php的错误都可以从这里的配置得到解决!

 这个文件控制了PHP许多方面的观点。为了让PHP读取这个文件,它必须被命名为
; ´php.ini´。PHP 将在这些地方依次查找该文件:当前工作目录;环境变量PHPRC
; 指明的路径;编译时指定的路径。
; 在windows下,编译时的路径是Windows安装目录。
; 在命令行模式下,php.ini的查找路径可以用 -c 参数替代。

; 该文件的语法非常简单。空白字符和用分号´;´开始的行被简单地忽略(就象你可能
; 猜到的一样)。 章节标题(例如 : [Foo])也被简单地忽略,即使将来它们可能
; 有某种的意义。
;
; 指示被指定使用如下语法:
; 指示标识符 = 值
; directive = value
; 指示标识符 是 *大小写敏感的* - foo=bar 不同于 FOO = bar。
;
; 值可以是一个字符串,一个数字,一个 PHP 常量 (如: E_ALL or M_PI), INI 常量中的
; 一个 (On, Off, True, False, Yes, No and None) ,或是一个表达式
; (如: E_ALL & ~E_NOTICE), 或是用引号括起来的字符串("foo").
;
; INI 文件的表达式被限制于位运算符和括号。
; | bitwise OR
; & bitwise AND
; ~ bitwise NOT
; ! boolean NOT
;
; 布尔标志可用 1, On, True or Yes 这些值置于开的状态。
; 它们可用 0, Off, False or No 这些值置于关的状态。
;
; 一个空字符串可以用在等号后不写任何东西表示,或者用 None 关键字:
;
; foo = ; 将foo置为空字符串
; foo = none ; 将foo置为空字符串
; foo = "none" ; 将foo置为字符串´none´
;
; 如果你值设置中使用常量,而这些常量属于动态调入的扩展库(不是 PHP 的扩展,就是
; Zend 的扩展),你仅可以调入这些扩展的行*之后*使用这些常量。
;
; 所有在 php.ini-dist 文件里设定的值与内建的默认值相同(这是说,如果 php.ini
; 没被使用或者你删掉了这些行,默认值与之相同)。


;;;;;;;;;;;;;;;;;;;;
; 语言选项 ;
;;;;;;;;;;;;;;;;;;;;

engine = On
; 使 PHP scripting language engine(PHP 脚本语言引擎)在 Apache下有效。
short_open_tag = On
; 允许 <? 标识(这种简单表示)。否则 仅有 <?php and <script> tags 将被识别。
asp_tags = Off
; 允许ASP-style <% %> tags
precision = 14
; 浮点类型数显示时的有效位数

y2k_compliance = Off
; 是否打开 2000年适应 (可能在非Y2K适应的浏览器中导致问题)

output_buffering = Off
; 输出缓存允许你甚至在输出正文内容之后发送 header(标头,包括cookies)行
; 其代价是输出层减慢一点点速度。你可以使用输出缓存在运行时打开输出缓存,
; 或者在这里将指示设为 On 而使得所有文件的输出缓存打开。

implicit_flush = Off
; 强制flush(刷新)让PHP 告诉输出层在每个输出块之后自动刷新自身数据。
; 这等效于在每个 print() 或 echo() 调用和每个 HTML 块后调用flush()函数。
; 打开这项设置会导致严重的运行时冲突,建议仅在debug过程中打开。

allow_call_time_pass_reference = On
; 是否让强迫函数调用时按引用传递参数。这一方法遭到抗议,
; 并可能在将来版本的PHP/Zend里不再支持。
; 受到鼓励的指定哪些参数按引用传递的方法是在函数声明里。
; 你被鼓励尝试关闭这一选项并确认你的脚本仍能正常工作,以保证在将来版本的语言里
; 它们仍能工作。(你将在每次使用该特点时得到一个警告,而参数将按值而不是按引用
; 传递)。

; Safe Mode 安全模式
safe_mode = Off
safe_mode_exec_dir =
safe_mode_allowed_env_vars = PHP_
; ?Setting certain environment variables
; ?may be a potential security breach.
; 该指示包含用逗号分隔的前缀列表。安全模式中,用户仅可以替换
; 以在此列出的前缀开头的环境变量的值。
; 默认地,用户将仅能 设定以PHP_开头的环境变量,(如: PHP_FOO=BAR)。
; 注意: 如果这一指示为空,PHP 将让用户更改任意环境变量!

safe_mode_protected_env_vars = LD_LIBRARY_PATH
; 这条指示包含一个用逗号分隔的环境变量列表,那是最终用户将不能用putenv () 更改的。
; 这些变量甚至在safe_mode_allowed_env_vars 设置为允许的情况下得到保护。

disable_functions =
; This directive allows you to disable specific functions for security reasons.
; It accepts a comma separated list of function names.
; This instruction is *not* affected by whether Safe Mode is turned on.

; Color of syntax highlighting mode.
; Anything acceptable by will work.

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

; Misc Misc
expose_php = Off
; Determines whether PHP should indicate the fact that it is installed on the server (for example: add to the signal it —PHP— sends to the Web service
;).
; (My personal opinion is to turn this off when any power-by header appears.)
; It does not pose a security threat, but it makes it possible to check whether it is installed on your server. Made possible with PHP.


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

max_execution_time = 30 ; The maximum execution time of each script, in seconds
memory_limit = 8388608 ; The maximum total amount of memory that can be used by a script (here is 8MB)


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Error handling and logging ;
; Error Control and registration;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Error reporting is bitwise. Or add up the numbers to get the desired error reporting level.
; E_ALL - all errors and warnings
; E_ERROR - fatal runtime errors
; E_WARNING - runtime warnings (non-fatal errors)
; E_PARSE - compile-time parsing errors
; E_NOTICE - runtime reminder (these are often caused by bugs in your code,
; may also be caused by intentional behavior. (eg: automatic initialization of an uninitialized variable to a
; null character based on string fact using an uninitialized variable)

; E_CORE_ERROR - Fatal error that occurs during the initialization process of PHP startup
; E_CORE_WARNING - Warning (non-fatal error) that occurs during the initialization process of PHP startup
; E_COMPILE_ERROR - Fatal error during compilation
; E_COMPILE_WARNING - compile-time warning (non-fatal error)
; E_USER_ERROR - user-generated error message
; 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 only errors
error_reporting = E_ALL & ~E_NOTICE ; Show all Errors, in addition to reminders
display_errors = On ; display error messages (as part of the output)
; On the final published web site, it is strongly recommended that you turn off this feature and use
; error logs instead (see below).
; Continuing to enable display_errors on the final published web site may
; expose some security-related information, such as file paths on your web service,
; your database configuration, or other information.

log_errors = Off ; Record errors in a log file (server-specific 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 Log errors
; instead of direct error output.

track_errors = Off ; Save the latest error/warning message in variable $php_errormsg (boolean)
;error_prepend_string = "<font color=ff0000>" ; in error String output before the message
; error_append_string = "</font>" ; String output after the error message
; error_log = filename ; Record the error log in the specified file
; error_log = syslog ; Record The error log is in the system log syslog (event log under NT, invalid under Windows 95)
warn_plus_overloading = Off; Warn when using '+' for strings


;;;;;;;;;;;;;;;;;;;
; Data Handling;
;;;;;;;;;;;;;;;;;
variables_order = "EGPCS" ; This directive describes the order in which PHP records
; GET, POST, Cookie, Environment and Built-in variables.
; (represented by G, P, C, E & S, often referred to as EGPCS or GPC).
; Records from left to right, with new values ​​replacing old ones.

register_globals = On ; Whether to register these EGPCS variables as global variables.
; You may want to turn this off if you don't want user data to be cluttered globally.
; This makes more sense in conjunction with track_vars - this way you can access all via the
; html#" target=_blank>$HTTP_*_VARS[] array GPC variables

register_argc_argv = On; This instruction tells PHP whether to declare the argv and argc variables
; (Note: here argv is an array and argc is the number of variables)
; (which contains data passed by the GET method) .
; If you don't want to use these variables, you should turn them off to improve performance.

track_vars = On; Make the $HTTP_*_VARS[] array valid, here * is used when using

www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/532407.htmlTechArticleHere is a very detailed introduction to the php.ini configuration file. Many php errors can be obtained from the configuration here. Solved! This file controls many aspects of PHP. In order for PHP to read this...

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