PHP 杂项函数

PHP杂项介绍

杂项。函数仅放置在这里，因为其他类别似乎都不适合。

杂项。函数是 PHP 核心的一部分。无需安装即可使用这些功能。

杂项的行为。功能受 php.ini 文件中的设置影响。

杂项。配置选项：

Name	Description	Default	Changeable
ignore_user_abort	FALSE indicates that scripts will be terminated as soon as they try to output something after a client has aborted their connection	"0"	PHP_INI_ALL
highlight.string	Color for highlighting a string in PHP syntax	"#DD0000"	PHP_INI_ALL
highlight.comment	Color for highlighting PHP comments	"#FF8000"	PHP_INI_ALL
highlight.keyword	Color for syntax highlighting PHP keywords (e.g. parenthesis and semicolon)	"#007700"	PHP_INI_ALL
highlight.default	Default color for PHP syntax	"#0000BB"	PHP_INI_ALL
highlight.html	Color for HTML code	"#000000"	PHP_INI_ALL
browscap	Name and location of browser-capabilities file (e.g. browscap.ini)	NULL	PHP_INI_SYSTEM

Function	Description
connection_aborted()	Checks whether the client has disconnected
connection_status()	Returns the current connection status
connection_timeout()	Deprecated from PHP 4.0.5. Checks whether the script has timed out
constant()	Returns the value of a constant
define()	Defines a constant
defined()	Checks whether a constant exists
die()	Alias of exit()
eval()	Evaluates a string as PHP code
exit()	Prints a message and exits the current script
get_browser()	Returns the capabilities of the user's browser
__halt_compiler()	Halts the compiler execution
highlight_file()	Outputs a file with the PHP syntax highlighted
highlight_string()	Outputs a string with the PHP syntax highlighted
hrtime()	Returns the system's high resolution time
ignore_user_abort()	Sets whether a remote client can abort the running of a script
pack()	Packs data into a binary string
php_strip_whitespace()	Returns the source code of a file with PHP comments and whitespace removed
show_source()	Alias of highlight_file()
sleep()	Delays code execution for a number of seconds
sys_getloadavg()	Returns the system load average
time_nanosleep()	Delays code execution for a number of seconds and nanoseconds
time_sleep_until()	Makes a script sleep until the specified time
uniqid()	Generates a unique ID
unpack()	Unpacks data from a binary string
usleep()	Delays code execution for a number of microseconds

Constant	Description
CONNECTION_ABORTED	Connection is aborted by user or network error
CONNECTION_NORMAL	Connection is running normally
CONNECTION_TIMEOUT	Connection timed out
__COMPILER_HALT_OFFSET__