PHP简单处理XML

一、手动输出xml

/*
 * 手动

输出xml * @author flyer0126 * @since 2012/4/27 */ header("Content-Type:text/xml"); print '<?xml version="1.0"?>'."\n"; print "<shows>\n"; $shows = array( array( 'name' => 'aa', 'channel' => 'a1', 'start' => 'a2' ), array( 'name' => 'bb', 'channel' => 'b1', 'start' => 'b2' ), array( 'name' => 'cc', 'channel' => 'c1', 'start' => 'c2' ) ); foreach($shows as $show) { print "<show>\n"; foreach($show as $tag => $val) { print "<$tag>".htmlspecialchars($val)."</$tag>\n"; } print "</show>\n"; } print "</shows>\n"; /** <?xml version="1.0"?> <shows> <show> <name>aa</name> <channel>a1</channel> <start>a2</start> </show> <show> <name>bb</name> <channel>b1</channel> <start>b2</start> </show> <show> <name>cc</name> <channel>c1</channel> <start>c2</start> </show> </shows> **/

二、通过DOMDocument生成xml

/*
 * 通过DOMDocument生成xml
 * @author flyer0126
 * @since 2012/4/27
 */
// 创建新文档
$dom = new DOMDocument("1.0", "UTF-8");
// 创建根元素humans，并将其添加至文档
$humans = $dom->appendChild($dom->createElement("humans"));
// 创建根元素zhangying，并将其添加至humans
$zhangying = $humans->appendChild($dom->createElement("zhangying"));
// 创建name元素，并将其添加至zhangying
$name = $zhangying->appendChild($dom->createElement("name"));
$name->appendChild($dom->createTextNode("张映"));
$sex = $zhangying->appendChild($dom->createElement("sex"));
$sex->appendChild($dom->createTextNode("男"));
$old = $zhangying->appendChild($dom->createElement("old"));
$old->appendChild($dom->createTextNode("28"));
// 创建根元素tank，并将其添加至humans
$tank = $humans->appendChild($dom->createElement("tank"));
// 创建name元素，并将其添加至tank
$name = $tank->appendChild($dom->createElement("name"));
$name->appendChild($dom->createTextNode("tank"));
$sex = $tank->appendChild($dom->createElement("sex"));
$sex->appendChild($dom->createTextNode("男"));
$old = $tank->appendChild($dom->createElement("old"));
$old->appendChild($dom->createTextNode("28"));
/*// 设置author元素
$author = $book->appendChild($dom->createElement("author"));
$author->appendChild($dom->createTextNode("zhangh"));
$author->setAttribute("class", "win_close");*/
// 

输出 $dom->formatOutput = true; header('Content-Type:text/xml'); echo $dom->saveXML(); // 将文档表现形式放于book变量中 //$book = $dom->saveXML(); // 将文档输出为book.xml文件 //$dom->save("humans.xml"); /** <?xml version="1.0 encoding="UTF-8"?> <humans> <zhangying> <name>张映</name> <sex>男</sex> <old>28</old> </zhangying> <tank> <name>tank</name> <sex>男</sex> <old>28</old> </tank> </humans> **/

三、xml的读取

/*
 * xml的读取
 * @author flyer0126
 * @since 2012/4/27
 */
// 1. 利用simplexml_load_file读取简单的xml文件
$humans = simplexml_load_file("humans.xml");
foreach($humans as $key => $human)
{
    echo $human->name."->".$human->sex."->".$human->old."\n";
}
/**
张映->男->28
tank->男->28
**/
// 2. 利用DOMDocument读取xml
$dom = new DOMDocument();
$dom->load("humans.xml");
$humans = $dom->getElementsByTagName("humans");
foreach($humans as $key=>$human)
{
$names = $human->getElementsByTagName("name");
$olds = $human->getElementsByTagName("old");
$sexes = $human->getElementsByTagName("sex");
foreach($names as $k=>$name)
{
$name = $names->item($k)->nodeValue;
$sex = $sexes->item($k)->nodeValue;
$old = $olds->item($k)->nodeValue;
echo "$name->$sex->$old\n";
}
}
/**
张映->男->28
tank->男->28
**/
// 3. 利用正则来获取数据
$xml = '';
$f = fopen("humans.xml", "r");
while($data = fread($f, 2096))
{
$xml .= $data;
}
fclose($f);
preg_match_all('/\<humans\>(.*?)\<\/humans\>/s', $xml, $humans);
foreach($humans[1] as $human)
{
preg_match_all('/\<name\>(.*?)\<\/name\>/s', $human, $names);
preg_match_all('/\<sex\>(.*?)\<\/sex\>/s', $human, $sexes);
preg_match_all('/\<old\>(.*?)\<\/old\>/s', $human, $olds);
}
foreach($names[1] as $k=>$name)
{
echo $names[1][$k].'-'.$sexes[1][$k].'-'.$olds[1][$k]."\n";
}
/**
张映->男->28
tank->男->28
**/
// 4. 利用XMLReader获取数据
$reader = new XMLReader();
$reader->open("humans.xml");
$i = 1;
while($reader->read())
{
if($reader->nodeType == XMLReader::TEXT)
{
if($i%3)
{
echo $reader->value;
}else
{
echo $reader->value."\n";
}
$i++;
}
}
/**
张映男28
tank男28
**/