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XC. Miscellaneous Functions

简介

These functions were placed here because none of the other categories seemed to fit.

需求

要编译本扩展模块无需外部库文件。

安装

本扩展模块作为 PHP 内核的一部分，无需安装即可使用。

运行时配置

这些函数的行为受 php.ini 的影响。

表 1. Misc. Configuration Options

NameDefaultChangeableChangelog
ignore_user_abort"0"PHP_INI_ALL 
highlight.string"#DD0000"PHP_INI_ALL 
highlight.comment"#FF8000"PHP_INI_ALL 
highlight.keyword"#007700"PHP_INI_ALL 
highlight.bg"#FFFFFF"PHP_INI_ALL 
highlight.default"#0000BB"PHP_INI_ALL 
highlight.html"#000000"PHP_INI_ALL 
browscapNULLPHP_INI_SYSTEM 
有关 PHP_INI_* 常量进一步的细节与定义参见附录 H。

以下是配置选项的简要解释。

ignore_user_abort boolean

FALSE by default. If changed to TRUE scripts will not be terminated after a client has aborted their connection.

See also ignore_user_abort().

highlight.bg string, highlight.comment string, highlight.default string, highlight.html string, highlight.keyword string, highlight.string string

Colors for Syntax Highlighting mode. Anything that's acceptable in <font color="??????"> would work.

browscap string

Name (e.g.: browscap.ini) and location of browser capabilities file. See also get_browser().

资源类型

本扩展模块未定义任何资源类型。

预定义常量

以下常量由本扩展模块定义，因此只有在本扩展模块被编译到 PHP 中，或者在运行时被动态加载后才有效。

CONNECTION_ABORTED (integer)

CONNECTION_NORMAL (integer)

CONNECTION_TIMEOUT (integer)

__COMPILER_HALT_OFFSET__ (integer)

Added in PHP 5.1.

目录
connection_aborted -- Check whether if client disconnected
connection_status -- Returns connection status bitfield
connection_timeout -- Check if the script timed out
constant -- Returns the value of a constant
define -- Defines a named constant
defined -- Checks whether a given named constant exists
die -- Equivalent to exit()
eval -- Evaluate a string as PHP code
exit -- Output a message and terminate the current script
get_browser -- Tells what the user's browser is capable of
__halt_compiler --  Halts the compiler execution
highlight_file -- Syntax highlighting of a file
highlight_string -- Syntax highlighting of a string
ignore_user_abort -- Set whether a client disconnect should abort script execution
pack -- Pack data into binary string
php_check_syntax --  Check the PHP syntax of (and execute) the specified file
php_strip_whitespace -- Return source with stripped comments and whitespace
show_source -- 别名 highlight_file()
sleep -- Delay execution
sys_getloadavg -- Gets system load average
time_nanosleep -- Delay for a number of seconds and nanoseconds
time_sleep_until --  Make the script sleep until the specified time
uniqid -- Generate a unique ID
unpack -- Unpack data from binary string
usleep -- Delay execution in microseconds
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