php simplexml_load_file函数用法示例

发布时间:2019-09-01编辑:脚本学堂
有关php simplexml_load_file函数的用法,simplexml_load_file函数读取XML文件的方法,需要的朋友参考下。

php中simplexml_load_file函数用法

在php中simplexml_load_file() 函数把 XML 文档载入对象中之后,即可利用由此函数返回的对象进行相关操作。

例子,XML文件。
 

复制代码 代码示例:
<?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代码:
 

复制代码 代码示例:
<?php 
if (file_exists('test.xml')) 

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

else 

  exit('Error.'); 

?>

输出结果: 
object(SimpleXMLElement)#1 (4) {
  ["to"]=>
  string(6) "George"
  ["from"]=>
  string(4) "John"
  ["heading"]=>
  string(8) "Reminder"
  ["body"]=>
  string(25) "Don't forget the meeting!"
}

iciba.xml文件:
 

复制代码 代码示例:
<?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衬下宛如指向天空的手指。</trans> 
 </sent> 
 <sent> 
  <orig>A balloon floated across the sky.</orig> 
  <trans>气球飘过天空。</trans> 
 </sent> 
 <sent> 
  <orig>A bolt of lightning lit up the sky.</orig> 
  <trans>(一道)闪电照亮了天空。</trans> 
 </sent> 
 <sent> 
  <orig>A bright moving object appeared in the sky at sunset.</orig> 
  <trans>日落西山时,天空出现了一个移动的发亮物体。</trans> 
 </sent> 
 <sent> 
  <orig>A bright rainbow arched above.</orig> 
  <trans>一弯明亮的彩虹悬挂在天空。</trans> 
 </sent> 
</dict>

在php中可以用以下方法获取值:
 

复制代码 代码示例:
<?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 "<br />例句:".$dictlist->orig; 
 echo "<br />翻译:".$dictlist->trans; 
}  // www.jb200.com
?>

第一部分将输出: 
 

复制代码 代码示例:
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衬下宛如指向天空的手指。
                )
            [1] => SimpleXMLElement Object
                (
                    [orig] => A balloon floated across the sky.
                    [trans] => 气球飘过天空。
                )
            [2] => SimpleXMLElement Object
                (
                    [orig] => A bolt of lightning lit up the sky.
                    [trans] => (一道)闪电照亮了天空。
                )
            [3] => SimpleXMLElement Object
                (
                    [orig] => A bright moving object appeared in the sky at sunset.
                    [trans] => 日落西山时,天空出现了一个移动的发亮物体。
                )
            [4] => SimpleXMLElement Object
                (
                    [orig] => A bright rainbow arched above.
                    [trans] => 一弯明亮的彩虹悬挂在天空。
                )
        )
)

第二部分将输出: 
例句:The church tower stood against the sky like a finger pointing towards heaven.
翻译:教堂的尖塔在天空的映衬下宛如指向天空的手指。

例句:A balloon floated across the sky.
翻译:气球飘过天空。

例句:A bolt of lightning lit up the sky.
翻译:(一道)闪电照亮了天空。

例句:A bright moving object appeared in the sky at sunset.
翻译:日落西山时,天空出现了一个移动的发亮物体。

例句:A bright rainbow arched above.
翻译:一弯明亮的彩虹悬挂在天空。

例子,一个遍历输出生成表格:
 

复制代码 代码示例:
eader("content-type:text/html; charset=utf-8"); //设置编码 
$xml = simplexml_load_file('a.xml'); //载入xml文件 $lists和xml文件的根节点是一样的 
echo $xml->company."<br>"; 
echo $xml->town."<br>id:"; 
echo $xml->town['id']."<br>parent:"; 
echo $xml->town['parent']."<br>"; 
 
echo "<br>循环读取:<br>"; 
foreach($xml->user as $users){ //有多个user,取得的是数组,循环输出 
    echo "-------------------<br>"; 
    echo "姓名:".$users->name."<br>"; 
    echo "编号:".$users->age."<br>"; 
    echo "性别:".$users->age['sex']."<br>"; 
    echo "序号:".$users->height."<br>"; 
}
 
echo "<br>循环读取:<br>"; 
foreach($xml->town as $towns){ //有多个user,取得的是数组,循环输出 
    echo "-------------------<br>"; 
    echo "id:".$towns['id']."<br>"; 
    echo "归属:".$towns['parent']."<br>"; 
    echo "地区:".$towns."<br>"; 
}