PHP 操作 XML 文件:读取、显示
以下为php文件的内容,把该php文件和slashdot.xml放在同一个文件夹即可
$open_tags = array(
'STORY' => '
'TITLE' => '
'URL' => '
'AUTHOR'=> '
$close_tags = array(
'STORY' => '',
'TITLE' => '',
'URL' => '',
'AUTHOR'=> ''
);
?>
//下面就是定义函数来提取数据:
// 处理开始标记的属性指
// $attrs是一个多维数组,键值为属性名, 值就是该属性的值
function startElement($parser, $name, $attrs=''){
global $open_tags, $temp, $current_tag;
$current_tag = $name;
if ($format = $open_tags[$name]){
switch($name){
case 'STORY':
echo '新的故事: ';
break;
default:
break;
}
}
}
// $current_tag告诉我们正在处理的标记,我们随后会在characterData函数中使用
//
// 当遇到标记时我们知道要flush所有的临时变量准备操作下一个标记
'TITLE' => '',
'URL' => '',
'AUTHOR'=> ''
);
?>
//下面就是定义函数来提取数据:
// 处理开始标记的属性指
// $attrs是一个多维数组,键值为属性名, 值就是该属性的值
function startElement($parser, $name, $attrs=''){
global $open_tags, $temp, $current_tag;
$current_tag = $name;
if ($format = $open_tags[$name]){
switch($name){
case 'STORY':
echo '新的故事: ';
break;
default:
break;
}
}
}
// $current_tag告诉我们正在处理的标记,我们随后会在characterData函数中使用
//
// 当遇到标记时我们知道要flush所有的临时变量准备操作下一个标记
function endElement($parser, $name, $attrs=''){
global $close_tags, $temp, $current_tag;
if ($format = $close_tags[$name]){
switch($name){
case 'STORY':
return_page($temp);
$temp = '';
break;
default:
break;
}
}
}
// 传送给此函数的是元素间的数据
// 例如,对
function characterData($parser, $data){
global $current_tag, $temp, $catID;
switch($current_tag){
case 'TITLE':
$temp['title'] = $data;
$current_tag = '';
break;
case 'URL':
$temp['url'] = $data;
$current_tag = '';
break;
case 'AUTHOR':
$temp['author'] = $data;
$current_tag = '';
default:
break;
}
}
?>
function return_page(){
global $temp;
echo 'o .$temp['url'].'">'.$temp['title'].'
';
echo 'Author:'.$temp['author'].'
';
echo '-----------------------------';
echo '
';
}
// 分析的内容
$xml_file = 'slashdot.xml';
// 定义字符集,默认是UTF-8
$type = 'UTF-8';
// 建立解析器
$xml_parser = xml_parser_create($type);
// 设置解析选项
xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, true);
xml_parser_set_option($xml_parser, XML_OPTION_TARGET_ENCODING, 'UTF-8');
// 告诉PHP发现元素时要调用什么函数
// 这些函数同时也处理元素的属性
xml_set_element_handler($xml_parser, 'startElement','endElement');
//告诉PHP对字符数据调用什么函数
xml_set_character_data_handler($xml_parser, 'characterData');
if (!($fp = fopen($xml_file, 'r'))) {
die("无法打开 $xml_file 文件进行解析!n");
}
// 通过循环来解析整个文件
while ($data = fread($fp, 4096)) {
if (!($data = utf8_encode($data))) {
echo 'ERROR'."n";
}
if (!xml_parse($xml_parser, $data, feof($fp))) {
die(sprintf( "XML error: %s at line %dnn",
xml_error_string(xml_get_error_code($xml_parser)),
xml_get_current_line_number($xml_parser)));
}
}
xml_parser_free($xml_parser);
?>

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