PHP xml_set_element_handler() Function
Description
The xml_set_element_handler() function specifies functions to be called at the start and end of an element in the XML document.
Syntax
PHP xml_set_element_handler() Function has the following syntax.
xml_set_element_handler(parser,start,end)Parameter
| Parameter | Is Required | Description |
|---|---|---|
| parser | Required. | XML parser to use |
| start | Required. | A function to be called at the start of an element |
| end | Required. | A function to be called at the end of an element |
The Function specified by the "start" parameter must have three parameters:
| Parameter | Is Required | Description |
|---|---|---|
| parser | Required. | A variable containing the XML parser calling the handler |
| name | Required. | A variable containing the name of the elements, that triggers this function, from the XML file as a string |
| data | Required. | An array containing the elements attributes from the XML file as a string |
The Function specified by the "end" parameter must have two parameters:
| Parameter | Is Required | Description |
|---|---|---|
| parser | Required. | A variable containing the XML parser calling the handler |
| name | Required. | A variable containing the name of the elements, that triggers this function, from the XML file as a string |
Return
This function returns TRUE on success, or FALSE on failure.
Example
XML File
<?xml version="1.0" encoding="ISO-8859-1"?>
<Book>/* www. j a v a 2s.co m*/
<name>PHP</name>
<name>Java</name>
</Book>
Set functions to be called at the start and end of an element in the XML document
<?php/*ww w . ja v a2s . c o m*/
$parser=xml_parser_create();
function start($parser,$element_name,$element_attrs){
switch($element_name){
case "name":
echo "name";
}
}
function stop($parser,$element_name){
echo "\n";
}
function char($parser,$data){
echo $data;
}
xml_set_element_handler($parser,"start","stop");
xml_set_character_data_handler($parser,"char");
$fp=fopen("test.xml","r");
while ($data=fread($fp,1024)){
xml_parse($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);
?>