PHP xml_set_notation_decl_handler() function
Definition and Usage
The xml_set_notation_decl_handler() function specifies the function called when the parser finds a symbol declaration in the XML document.
If the processor is successfully established, this function will return true; otherwise, it will return false.
Note:Symbol declaration, in English, also known as notation declaration, and some literature translates it as 'comment declaration'.
Syntax
xml_set_notation_decl_handler(parser,handler)
| Parameters | Description |
|---|---|
| parser | Mandatory. The variable specifies the XML parser to be used. |
| handler | Mandatory. The function called when the parser finds a symbol declaration. |
By handler The function specified by the parameter must have six parameters:
| Parameters | Description |
|---|---|
| parser | Mandatory. The variable contains the XML parser that calls the processor. |
| name | Mandatory. The variable contains the entity name. |
| base |
Mandatory. The variable contains the base for the system identifier (system_id) of the entity to be parsed. Currently, this parameter is usually set to an empty string. |
| system_id | Mandatory. The variable specifies the system identifier of the entity. |
| public_id | Mandatory. The variable contains the public identifier of the entity. |
| notation | Required. Specifies a variable containing the symbol that identifies the data type of the entity. |
Description
handler The parameter can also be an array containing object references and method names.
Examples
<?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);
?>
