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LXI. Miscellaneous Functions

Introduction

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

Requirements

No external libraries are needed to build this extension.

Installation

There is no installation needed to use these functions; they are part of the PHP core.

Runtime Configuration

The behaviour of these functions is affected by settings in php.ini.

Table 1. Misc. Configuration Options

NameDefaultChangeable
ignore_user_abort"0"PHP_INI_ALL
highlight.string#DD0000PHP_INI_ALL
highlight.comment#FF9900PHP_INI_ALL
highlight.keyword#007700PHP_INI_ALL
highlight.bg#FFFFFFPHP_INI_ALL
highlight.default#0000BBPHP_INI_ALL
highlight.html#000000PHP_INI_ALL
browscapNULLPHP_INI_SYSTEM
For further details and definition of the PHP_INI_* constants see ini_set().

Here's a short explanation of the configuration directives.

ignore_user_abort boolean

TRUE by default. If changed to FALSE scripts will be terminated as soon as they try to output something after a client has aborted their connection.

See also ignore_user_abort().

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().

Resource Types

This extension has no resource types defined.

Predefined Constants

The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.

CONNECTION_ABORTED (integer)

CONNECTION_NORMAL (integer)

CONNECTION_TIMEOUT (integer)

Table of Contents
connection_aborted -- Returns TRUE if client disconnected
connection_status -- Returns connection status bitfield
connection_timeout -- Return TRUE if 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
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.
show_source -- Alias of highlight_file()
sleep -- Delay execution
uniqid -- Generate a unique ID
unpack -- Unpack data from binary string
usleep -- Delay execution in microseconds
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