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php中simplexml_load_file函數(shù)使用方法

2024-09-04 11:48:41

字體：大中小

供稿：網(wǎng)友

在php中simplexml_load_file() 函數(shù)把 XML 文檔載入對象中之后我們就可以利用由此函數(shù)返回回的對象進行相關(guān)的操作了,下面我們看幾個測試實例.

例子,XML文件,代碼如下:

<?xml version="1.0" encoding="ISO-8859-1"?>

<note>

<to>George</to>

<from>John</from>

<heading>Reminder</heading>

<body>Don't forget the meeting!</body>

</note>

PHP 代碼如下:

<?php

if (file_exists('test.xml'))

 {

 $xml = simplexml_load_file('test.xml');

 var_dump($xml);

 }

else

 {

 exit('Error.');

 }

?>

//輸出：

object(SimpleXMLElement)#1 (4)

{

["to"]=> string(4) "George"

["from"]=> string(4) "John"

["heading"]=> string(8) "Reminder"

["body"]=> string(29) "Don't forget the meeting!"

}

假如有一個“iciba.xml”文件,其內(nèi)容如下:

<?xml version="1.0" encoding="UTF-8"?>

<dict num="219" id="219" name="219">

<key>天空</key>

<pos></pos>

<acceptation>Array；Array；</acceptation>

<sent>

 <orig>The church tower stood against the sky like a finger pointing towards heaven.</orig>

 <trans>教堂的尖塔在天空的映襯下宛如指向天空的手指。</trans>

</sent>

<sent>

 <orig>A balloon floated across the sky.</orig>

 <trans>氣球飄過天空。</trans>

</sent>

<sent>

 <orig>A bolt of lightning lit up the sky.</orig>

 <trans>（一道）閃電照亮了天空。</trans>

</sent>

<sent>

 <orig>A bright moving object appeared in the sky at sunset.</orig>

 <trans>日落西山時，天空出現(xiàn)了一個移動的發(fā)亮物體。</trans>

</sent>

<sent>

 <orig>A bright rainbow arched above.</orig>

 <trans>一彎明亮的彩虹懸掛在天空。</trans>

</sent>

</dict>在PHP語言中我們可以用以下方法取得我們想要的值：

<?php

$xmldata = simplexml_load_file("iciba.xml");

header("Content-Type: text/html; charset=UTF-8");

print_r($xmldata); //第一部分www.survivalescaperooms.com

$listcount = count($xmldata->sent);

for($i=0;$i<$listcount;$i++){ //第二部分

$dictlist = $xmldata->sent[$i];

echo " 例句：".$dictlist->orig;

echo " 翻譯：".$dictlist->trans;

}

?>“第一部分”將輸出：

SimpleXMLElement Object

(

 [@attributes] => Array

 (

 [num] => 219

 [id] => 219

 [name] => 219

 )

 [key] => 天空

 [pos] => SimpleXMLElement Object

 (

 )

 [acceptation] => Array；Array；

 [sent] => Array

 (

 [0] => SimpleXMLElement Object

 (

 [orig] => The church tower stood against the sky like a finger pointing towards heaven.

 [trans] => 教堂的尖塔在天空的映襯下宛如指向天空的手指。

 )

 [1] => SimpleXMLElement Object

 (

 [orig] => A balloon floated across the sky.

 [trans] => 氣球飄過天空。

 )

 [2] => SimpleXMLElement Object

 (

 [orig] => A bolt of lightning lit up the sky.

 [trans] => （一道）閃電照亮了天空。

 )

 [3] => SimpleXMLElement Object

 (

 [orig] => A bright moving object appeared in the sky at sunset.

 [trans] => 日落西山時，天空出現(xiàn)了一個移動的發(fā)亮物體。

 )

 [4] => SimpleXMLElement Object

 (

 [orig] => A bright rainbow arched above.

 [trans] => 一彎明亮的彩虹懸掛在天空。

 )

 )

)“第二部分”將輸出：

例句：The church tower stood against the sky like a finger pointing towards heaven.

翻譯：教堂的尖塔在天空的映襯下宛如指向天空的手指。

例句：A balloon floated across the sky.

翻譯：氣球飄過天空。

例句：A bolt of lightning lit up the sky.

翻譯：（一道）閃電照亮了天空。

例句：A bright moving object appeared in the sky at sunset.

翻譯：日落西山時，天空出現(xiàn)了一個移動的發(fā)亮物體。

例句：A bright rainbow arched above.

翻譯：一彎明亮的彩虹懸掛在天空。

例子,更深入的一個遍歷輸出生成表格,代碼如下:

eader("content-type:text/html; charset=utf-8"); //設(shè)置編碼

$xml = simplexml_load_file('a.xml'); //載入xml文件 $lists和xml文件的根節(jié)點是一樣的

echo $xml->company." ";

echo $xml->town." id:";

echo $xml->town['id']." parent:";

echo $xml->town['parent']." ";

echo " 循環(huán)讀取: ";

foreach($xml->user as $users){ //有多個user，取得的是數(shù)組，循環(huán)輸出

 echo "------------------- ";

 echo "姓名:".$users->name." ";

 echo "編號:".$users->age." ";

 echo "性別:".$users->age['sex']." ";

 echo "序號:".$users->height." ";

}//開源代碼Vevb.com

echo " 循環(huán)讀取: ";

foreach($xml->town as $towns){ //有多個user，取得的是數(shù)組，循環(huán)輸出

 echo "------------------- ";

 echo "id:".$towns['id']." ";

 echo "歸屬:".$towns['parent']." ";

 echo "地區(qū):".$towns." ";

}