如何获取标签内容？

Question

Im making a script to get other pages content, and right now im working on a function that should get tag content... but im a bit stuck :D 我正在制作一个脚本来获取其他页面内容，现在我正在开发一个应该获得标签内容的功能......但我有点卡住：D

found a new tag of same kind inside tag...
nothing found...
1111
2222

is printed. 打印出来。

<?php

function d($toprint)
{
    echo $toprint."<br />";
}

function GetTagContents($source, $tag, $pos)
{   
    $startTagPos        = strpos( $source, "<".$tag, $pos );
    $startTagEndPos     = strpos( $source, ">", $startTagPos )+1;

    $endTagPos          = strpos( $source, "</".$tag, $startTagEndPos);

    $lastpos = $startTagPos+1;    
    while( $lastpos != False )
    {
        $newStartTagPos = strpos( $source, "<".$tag, $lastpos );

        if( $newStartTagPos == False )
        {
            d("nothing found...");
            $lastpos = False;        
        }
        else if( $newStartTagPos > $endTagPos )
        {
            d("out of bounds...");
            $lastpos = False;
        }
        else
        {
            d("found a new tag of same kind inside tag...");
            $lastpos =  $newStartTagPos+1;       
            $endTagPos  = strpos( $source, "</".$tag, $newStartTagPos);
        }
    }

    return substr($source, $startTagEndPos, $endTagPos-$startTagEndPos);
}
?>
<html>

    <body>
    <?php

    d(GetTagContents('<div>1111<div>2222</div>3333</div>', "div", 0));

    ?>
    </body>

</html>

someone got any ideas? 有人有任何想法吗？

Answer 1

Using PHP DOM: 使用PHP DOM：

$src = new DOMDocument('1.0', 'utf-8');
$src->formatOutput = true;
$src->preserveWhiteSpace = false;
$src->load('path/to/file.html');

$tagName = 'foo';
$element = $src->getElementsByTagName($tagName)->item(0);
var_dump($element->nodValue)

Answer 2

strpos will return 0 the first time, and 0 == false in PHP. strpos第一次返回0，在PHP中返回0 0 == false 。 The check you want is to compare the result with === , which evaluates to true if both values are the same value and the same type. 您要进行的检查是将结果与===进行比较，如果两个值都是相同的值和相同的类型，则结果为true。 That is, 0 == false is true but 0 === false is not true. 也就是说， 0 == false为真，但0 === false不为真。

Answer 3

you can use this 你可以用它

simplexml_load_string

$xml = "[div]1111[div]2222[/div]3333[/div]";

$loadStrring = simplexml_load_string($xml);
foreach($loadStrring->children() as $name => $data) {
    if($name ='div')
        echo $data . "\n";
    }
}

如何获取标签内容？

问题描述

3 个解决方案

解决方案1
2 已采纳 2011-02-03 13:16:56

解决方案2
0 2011-02-03 13:01:49

解决方案3
0 2011-02-03 13:05:37

如何获取标签内容？

问题描述

3 个解决方案

解决方案1 2 已采纳 2011-02-03 13:16:56

解决方案2 0 2011-02-03 13:01:49

解决方案3 0 2011-02-03 13:05:37

解决方案1
2 已采纳 2011-02-03 13:16:56

解决方案2
0 2011-02-03 13:01:49

解决方案3
0 2011-02-03 13:05:37