(PHP 4, PHP 5, PHP 7, PHP 8)
xml_parser_set_option — 在 XML 解析器中设置选项
在 XML 解析器中设置选项。
parser指向要设置选项的 XML 解析器。
option要设置的选项。见下文。
以下选项可用：
| 选项常量 | 数据类型 | 说明 |
|---|---|---|
XML_OPTION_CASE_FOLDING |
bool | 控制是否为此 XML 解析器启用大写转换。默认启用。 |
XML_OPTION_SKIP_TAGSTART |
integer | 指定在标记名称的开头应略过多少个字符。 |
XML_OPTION_SKIP_WHITE |
bool | 是否略过由空白字符组成的值。 |
XML_OPTION_TARGET_ENCODING |
string |
设置要在此 XML 解析器中使用的目标编码。默认情况下，设置的编码与 xml_parser_create()
使用的源编码相同。支持的目标编码有 ISO-8859-1、US-ASCII 和 UTF-8。
|
value选项的新值。
| 版本 | 说明 |
|---|---|
| 8.3.0 |
value 参数现在也接受 bool。选项 XML_OPTION_CASE_FOLDING 和
XML_OPTION_SKIP_WHITE 现在是 bool 选项。
|
| 8.0.0 |
parser 现在接受 XMLParser 实例；之前接受有效的 xml resource。
|
| 8.0.0 |
如果 option 无效，现在抛出 ValueError。
|
The option XML_OPTION_SKIP_WHITE has no effect in my PHP 5.2.6 (with expat-1.95.8-5). To skip cdata composed of white space only, simply check for that at the beginning of your cdata callback function:
<?php
function callback_cdata($parser, $cdata)
{
if(!trim($cdata))
return;
// ... continue processing ...
}
?>XML is case sensitive, then, from my point of view, disabling case folding doesn't goes against xml 1.0 specifications but the contrary, disabling case folding allow us to distiguish between diferent cases of the same letter ('a' and 'A') which of XML are two diferent things.
From my point of view, disabling case folding is a good practice and I think it should be disabled by default.
More information on:
http://www.isacat.net/2001/xml/case.htm
and
http://www.w3.org/TR/REC-xml
Thank you.In the function below, you need to update two lines if you don't want php to throw warnings.
change these two:
$elements[$index]['attributes'] = $tag['attributes'];
$elements[$index]['content'] = $tag['value'];
to this:
$elements[$index]['attributes'] = empty($tag['attributes']) ? "" : $tag['attributes'];
$elements[$index]['content'] = empty($tag['value']) ? "" : $tag['value'];