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xml_set_notation_decl_handler(parser,handler)
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parser ±ØÐè¡£¹æ¶¨ÒªÊ¹ÓÃµÄ XML ½âÎöÆ÷¡£
handler ±ØÐè¡£¹æ¶¨µ±½âÎöÆ÷ÕÒµ½·ûºÅÉùÃ÷ʱ±»µ÷Óõĺ¯Êý¡£

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parser ±ØÐè¡£¹æ¶¨Ò»¸ö±äÁ¿£¬°üº¬µ÷Óô¦ÀíÆ÷µÄ XML ½âÎöÆ÷¡£
name ±ØÐè¡£¹æ¶¨°üº¬ÊµÌåÃû³ÆµÄ±äÁ¿¡£
base

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system_id ±ØÐè¡£¹æ¶¨°üº¬ÊµÌåµÄϵͳ±êʶ·ûµÄ±äÁ¿¡£
public_id ±ØÐè¡£¹æ¶¨°üº¬ÊµÌåµÄ¹«¹²±êʶ·ûµÄ±äÁ¿¡£
notation ±ØÐè¡£¹æ¶¨Ò»¸ö±äÁ¿£¬°üº¬±êʶʵÌåÊý¾ÝÀàÐ͵ķûºÅ¡£

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<?php

$parser=xml_parser_create();

function char($parser,$data)
  {
  echo $data;
  }

function not_decl_handler($parser,$not,$base,$sysID,$pubID)
  {
  echo "$not<br />";
  echo "$sysID<br />";
  echo "$pubID<BR />";
  }

xml_set_character_data_handler($parser,"char");
xml_set_notation_decl_handler($parser, "not_decl_handler");
$fp=fopen("test.xml","r");

while ($data=fread($fp,4096))
  {
  xml_parse($parser,$data,feof($fp)) or 
  die (sprintf("XML Error: %s at line %d", 
  xml_error_string(xml_get_error_code($parser)),
  xml_get_current_line_number($parser)));
  }

xml_parser_free($parser);

?>
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