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><H1
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>LXXXVI. GNU Readline</H1
><DIV
CLASS="PARTINTRO"
><A
NAME="AEN80587"
></A
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="readline.intro"
></A
>Introduction</H1
><P
> The <A
HREF="function.readline.html"
><B
CLASS="function"
>readline()</B
></A
> functions implement an interface
to the GNU Readline library. These are functions that provide
editable command lines. An example being the way Bash allows you
to use the arrow keys to insert characters or scroll through
command history. Because of the interactive nature of this
library, it will be of little use for writing Web applications,
but may be useful when writing scripts meant
<A
HREF="features.commandline.html"
>using PHP from the command line</A
>.
</P
><DIV
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><BLOCKQUOTE
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><P
><B
>Note: </B
>This extension is not
available on Windows platforms.</P
></BLOCKQUOTE
></DIV
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><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="readline.requirements"
></A
>Requirements</H1
><P
> To use the readline functions, you need to install libreadline. You can
find libreadline on the home page of the GNU Readline project, at
<A
HREF="http://cnswww.cns.cwru.edu/~chet/readline/rltop.html"
TARGET="_top"
>http://cnswww.cns.cwru.edu/~chet/readline/rltop.html</A
>.
It's maintained by Chet Ramey, who's also the author of Bash.
</P
><P
> You can also use this functions with the libedit library, a non-GPL
replacement for the readline library. The libedit library is BSD
licensend and available for download from
<A
HREF="http://cnswww.cns.cwru.edu/~chet/readline/rltop.html"
TARGET="_top"
>http://sourceforge.net/projects/libedit/</A
>.
</P
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><H1
CLASS="section"
><A
NAME="readline.installation"
></A
>Installation</H1
><P
> To use this functions you must compile the CGI or CLI version of PHP
with readline support. You need to configure PHP
<TT
CLASS="option"
>--with-readline[=DIR]</TT
>.
In order you want to use the libedit readline replacement, configure PHP
<TT
CLASS="option"
>--with-libedit[=DIR]</TT
>.
</P
></DIV
><DIV
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><H1
CLASS="section"
><A
NAME="readline.configuration"
></A
>Runtime Configuration</H1
><P
>This extension has no configuration directives defined in <TT
CLASS="filename"
>php.ini</TT
>.</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="readline.resources"
></A
>Resource Types</H1
><P
>This extension has no resource types defined.</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="readline.constants"
></A
>Predefined Constants</H1
><P
>This extension has no constants defined.</P
></DIV
></DIV
><DIV
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><DL
><DT
><B
>Table of Contents</B
></DT
><DT
><A
HREF="function.readline-add-history.html"
>readline_add_history</A
> -- Adds a line to the history</DT
><DT
><A
HREF="function.readline-clear-history.html"
>readline_clear_history</A
> -- Clears the history</DT
><DT
><A
HREF="function.readline-completion-function.html"
>readline_completion_function</A
> -- Registers a completion function</DT
><DT
><A
HREF="function.readline-info.html"
>readline_info</A
> -- Gets/sets various internal readline variables</DT
><DT
><A
HREF="function.readline-list-history.html"
>readline_list_history</A
> -- Lists the history</DT
><DT
><A
HREF="function.readline-read-history.html"
>readline_read_history</A
> -- Reads the history</DT
><DT
><A
HREF="function.readline-write-history.html"
>readline_write_history</A
> -- Writes the history</DT
><DT
><A
HREF="function.readline.html"
>readline</A
> -- Reads a line</DT
></DL
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