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# tidy_get_opt_doc

(PHP 5 >= 5.1.0RC1)

tidy_get_opt_doc -- Returns the documentation for the given option name

## 说明

Procedural style:

string tidy_get_opt_doc ( tidy object, string optname )

Object oriented style:

string tidy->getOptDoc ( string optname )

tidy_get_opt_doc() returns the documentation for the given option name.

> 注: You need at least libtidy from 25 April, 2005 for this function be available.

## 参数

object

  A tidy object

optname

  The option name

## 返回值

Returns a string if the option exists and has documentation available, or `FALSE` otherwise.

## 范例

例子 1. Print all options along with their documentation and default value

`<?php $tidy = new tidy; $config = $tidy->getConfig(); ksort($config); foreach ($config as $opt => $val) { if (!$doc = $tidy->getOptDoc($opt)) $doc = 'no documentation available!'; $val = ($tidy->getOpt($opt) === true) ? 'true' : $val; $val = ($tidy->getOpt($opt) === false) ? 'false' : $val; echo "<p><b>$opt</b> (default: '$val')<br />". "$doc</p><hr />\n"; } ?>`

## 参见

tidy_get_config()
tidy_getopt()

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