PHP xml_set_element_handler() 函数

示例

指定要在 XML 文档中的元素的开头和结尾处调用的函数（注释.xml）：

<?php
$parser=xml_parser_create();

function start($parser,$element_name,$element_attrs) {
switch($element_name) {
    case "NOTE":
    echo "NOTE<br>";
    break;
    case "TO":
    echo "To: ";
    break;
    case "FROM":
    echo "From: ";
    break;
    case "HEADING":
    echo "Heading: ";
    break;
    case "BODY":
    echo "Message: ";
}
}

function stop($parser,$element_name) {
echo "<br>";
}

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

// Specify functions to be called at the start and end of an element in the XML document
xml_set_element_handler($parser,"start","stop");
xml_set_character_data_handler($parser,"char");
$fp=fopen("note.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($parser);
fclose($fp);
?>

运行示例 »

定义和用法

xml_set_element_handler() 函数指定要在 XML 文档中元素的开头和结尾处调用的函数。

笔记：这个开始和结尾参数也可以是包含对象引用和方法名称的数组。

语法

xml_set_element_handler( parser, start, end)

参数值

Parameter	Description
parser	Required. Specifies the XML parser to use
start	Required. Specifies a function to be called at the start of an element. The function must have three parameters: $parser - A variable containing the XML parser calling the handler $name - A variable containing the name of the elements, that triggers this function, from the XML file as a string $data - An array containing the elements attributes from the XML file as a string
end	Required. Specifies a function to be called at the end of an element. The function must have two parameters: $parser - A variable containing the XML parser calling the handler $name - A variable containing the name of the elements, that triggers this function, from the XML file as a string

技术细节

返回值：	成功则为真。失败时为 FALSE
PHP 版本：	4.0+

❮ PHP XML 解析器参考