The misc. functions were only placed here because none of the other categories seemed to fit.
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Installation
The misc functions are part of the PHP core. There is no installation needed to use these functions.
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Runtime Configuration
The behavior of the misc functions is affected by settings in the php.ini file.
Misc. configuration options:
Name Default Description Changeable
ignore_user_abort "0" FALSE indicates that scripts will be terminated as soon as they try to output something after a client has aborted their connection PHP_INI_ALL
highlight.string "#DD0000" Color for highlighting a string in PHP syntax PHP_INI_ALL
highlight.comment "#FF8000" Color for highlighting PHP comments PHP_INI_ALL
highlight.keyword "#007700" Color for syntax highlighting PHP keywords (e.g. parenthesis and semicolon) PHP_INI_ALL
highlight.bg "#FFFFFF" Color for background PHP_INI_ALL
highlight.default "#0000BB" Default color for PHP syntax PHP_INI_ALL
highlight.html "#000000" Color for HTML code PHP_INI_ALL
browscap NULL Name and location of browser-capabilities file (e.g. browscap.ini) PHP_INI_SYSTEM
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PHP Misc. Functions
PHP: indicates the earliest version of PHP that supports the function.
Function Description PHP
connection_aborted() Checks whether the client has disconnected 3
connection_status() Returns the current connection status 3
connection_timeout() Deprecated in PHP 4.0.5 3
constant() Returns the value of a constant 4
define() Defines a constant 3
defined() Checks whether a constant exists 3
die() Prints a message and exits the current script 3
eval() Evaluates a string as PHP code 3
exit() Prints a message and exits the current script 3
get_browser() Returns the capabilities of the user's browser 3
highlight_file() Outputs a file with the PHP syntax highlighted 4
highlight_string() Outputs a string with the PHP syntax highlighted 4
ignore_user_abort() Sets whether a remote client can abort the running of a script 3
pack() Packs data into a binary string 3
php_check_syntax() Deprecated in PHP 5.0.5 5
php_strip_whitespace() Returns the source code of a file with PHP comments and whitespace removed 5
show_source() Alias of highlight_file() 4
sleep() Delays code execution for a number of seconds 3
time_nanosleep() Delays code execution for a number of seconds and nanoseconds 5
time_sleep_until() Delays code execution until a specified time 5
uniqid() Generates a unique ID 3
unpack() Unpacks data from a binary string 3
usleep() Delays code execution for a number of microseconds 3
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PHP Misc. Constants
PHP: indicates the earliest version of PHP that supports the constant.
Constant Description PHP
CONNECTION_ABORTED
CONNECTION_NORMAL
CONNECTION_TIMEOUT
__COMPILER_HALT_OFFSET__ 5
source:http://www.w3schools.com/php/php_ref_misc.asp
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