php中simplexml_load_file函數(shù)用法實(shí)例

2024-09-04 11:43:10

字體：大中小

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這篇文章主要介紹了php中simplexml_load_file函數(shù)用法,以實(shí)例形式詳細(xì)的講述了simplexml_load_file函數(shù)讀取XML文件的具體方法,非常具有實(shí)用價(jià)值,需要的朋友可以參考下。

本文實(shí)例講述了php中simplexml_load_file函數(shù)用法。分享給大家供大家參考。具體用法分析如下：

在php中simplexml_load_file() 函數(shù)把 XML 文檔載入對(duì)象中之后我們就可以利用由此函數(shù)返回的對(duì)象進(jìn)行相關(guān)的操作了,下面我們看幾個(gè)測(cè)試實(shí)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.');

}

?>

運(yùn)行輸出結(jié)果如下：

object(SimpleXMLElement)#1 (4) {

  ["to"]=>

  string(6) "George"

  ["from"]=>

  string(4) "John"

  ["heading"]=>

  string(8) "Reminder"

  ["body"]=>

  string(25) "Don't forget the meeting!"

}

假如有一個(gè)“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(shí)，天空出現(xiàn)了一個(gè)移動(dòng)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

$listcount = count($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(shí)，天空出現(xiàn)了一個(gè)移動(dòng)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(shí)，天空出現(xiàn)了一個(gè)移動(dòng)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(gè)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(diǎn)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(gè)user，取得的是數(shù)組，循環(huán)輸出

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

 echo "姓名:".$users->name." ";

 echo "編號(hào):".$users->age." ";

 echo "性別:".$users->age['sex']." ";

 echo "序號(hào):".$users->height." ";

} //www.survivalescaperooms.com

echo " 循環(huán)讀取: ";

foreach($xml->town as $towns){ //有多個(gè)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." ";

}