PHP xml_set_unparsed_entity_decl_handler() function
Definition and Usage
The xml_set_unparsed_entity_decl_handler() function defines the function to be called when encountering an unparseable entity name (NDATA) declaration.
If the handler is successfully established, the function will return true; otherwise, it will return false.
Syntax
xml_set_unparsed_entity_decl_handler(parser,handler)
| Parameters | Description |
|---|---|
| parser | Mandatory. Defines the XML parser to be used. |
| handler | Mandatory. Defines a function. |
By handler The function defined by the parameter must have six parameters:
| Parameters | Description |
|---|---|
| parser | Mandatory. Defines a variable containing the XML parser that calls the processor. |
| name | Mandatory. Defines a variable containing the entity name. |
| base |
Mandatory. Defines a variable containing the base for parsing the entity's system identifier (system_id). Currently, this parameter is usually set to an empty string. |
| system_id | Mandatory. Defines a variable containing the system identifier of the entity. |
| public_id | Mandatory. Defines a variable containing the public identifier of the entity. |
| notation | Mandatory. Defines 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.
Example
<?php
$parser=xml_parser_create();
function char($parser,$data)
{
}
function unparsed_ent_handler($parser,$entname,
$base,$sysID,$pubID,$notname)
{
print "$entname";
print "$sysID";
print "$pubID";
print "$notname";
}
xml_set_unparsed_entity_decl_handler($parser,
"unparsed_ent_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);
?>
