(PHP 4, PHP 5, PHP 7, PHP 8)
xml_set_default_handler — 建立默认处理程序
为 parser 指定的 XML 处理程序建立默认处理函数。
parserXML 解析器。
handler
如果传递 null 或空字符串，处理程序将重置为其默认状态。
如果 handler 是 callable，设置的 callable 将作为处理程序。
如果 handler 是 string，它可以是 xml_set_object()
设置的对象的方法名称。
处理程序的签名必须是：
parserdata
data 包含字符数据。可以是 XML 声明、文档类型声明、实体名或者其它没有已存在处理程序的数据。
总是返回 true。
For anyone who was also wondering what kind of events this function actually handles:
it's used in cases when an XML comment is found or an additional declaration like an xml-stylesheet. In such cases the data argument contains the whole string as it is, for example:
<!-- this is a comment -->
<?xml-stylesheet title="mystyle" type="text/xsl" href="style.xsl" ?>it seems to me that in PHP5 the function defined as default-handler (using xml_set_default_handler()) doesen't get passed the cdata anymore:
i.e.:
xml_set_element_handler($this->parser, 'parseSTART', 'parseEND');
xml_set_default_handler($this->parser, 'parseDEFAULT');
function parseSTART() { ... }
function parseEND() { ... }
function parseDEFAULT() { ... }
under PHP5, parseDEFAULT will NOT get passed any cdata, but unter PHP4 it will. at least that's my take on the strange stuff (not) happening after migrating to PHP5.
my solution was to add a xml_set_character_data_handler($parser, 'parseDEFAULT'). it worked for me.I have the same issue using two installation of PHP5: on accepts to use the default handler while the other only uses the character_data one.
Maybe a configuration problem...
;) Nonor.