PHP：正则表达式匹配词组不包含特定单词

如何解决PHP：正则表达式匹配词组不包含特定单词

| 我已经厌倦了四处寻找一个足够接近的例子，需要一些快速的帮助！这是我的代码：

preg_match_all( \'#<li.*?>.*?</li>#s\',$card_html,$activity );

我想对其进行修改，以使

<li.*?>

排除单词

Unplayed

。 （单词出现在

.*?

之后和

>

之前。 编辑：

Want to catch: http://gamercard.xbox.com/en-US/Stallion83.card

            <li >

                <a href=\"http://live.xbox.com/en-us/GameCenter/Achievements?title=1464993792&amp;compareTo=Stallion83\">
                   <img src=\"http://tiles.xbox.com/tiles/vD/fP/1Gdsb2JhbA9ECgUPGgIfVl9TL2ljb24vMC84MDAwIAAAAAAAAPvgN6M=.jpg\" alt=\"F.E.A.R. 3\" title=\"F.E.A.R. 3\" />
                   <span class=\"Title\">F.E.A.R. 3</span>
                   <span class=\"LastPlayed\">6/24/2011</span>
                   <span class=\"EarnedGamerscore\">415</span>
                   <span class=\"AvailableGamerscore\">1000</span>
                   <span class=\"EarnedAchievements\">23</span>
                   <span class=\"AvailableAchievements\">50</span>
                   <span class=\"PercentageComplete\">46%</span>
                </a>
            </li>

            <li class=\"Complete\" >

                <a href=\"http://live.xbox.com/en-US/GameCenter/Achievements?title=1096157212&amp;compareTo=Im%20RedJ\">
                   <img src=\"http://tiles.xbox.com/tiles/HI/L4/1Gdsb2JhbA9ECgQJGgYfVl4gL2ljb24vMC84MDAwIAAAAAAAAPvXggM=.jpg\" alt=\"Call of Duty: WaW\" title=\"Call of Duty: WaW\" />
                   <span class=\"Title\">Call of Duty: WaW</span>
                   <span class=\"LastPlayed\">6/21/2011</span>
                   <span class=\"EarnedGamerscore\">1500</span>
                   <span class=\"AvailableGamerscore\">1500</span>
                   <span class=\"EarnedAchievements\">66</span>
                   <span class=\"AvailableAchievements\">66</span>
                   <span class=\"PercentageComplete\">100%</span>
                </a>
            </li>

Dont want: http://gamercard.xbox.com/en-US/test.card

            <li class=\"Unplayed\"></li>

            <li class=\"Unplayed\"></li>

谢谢。     

解决方法

        尝试这个。前瞻确保

<li>

标记的其余部分不包含未播放。

preg_match_all( \'#<li(?=(.(?!Unplayed))*?>).*?>(.(?!Unplayed))*?</li>#s\',$card_html,$activity ); 

编辑：我无法从您的示例中看出来，但这听起来像是在

的begin标签的内部和外部都可能出现未播放的情况。     ,        正则表达式不是完成此任务的正确工具，您可以在SO上看到很多对此的解释。像这样使用DOMDocument：

function innerHTML($node){
  $doc = new DOMDocument();
  foreach ($node->childNodes as $child)
    $doc->appendChild($doc->importNode($child,true));   
  return $doc->saveHTML();
}
$dom = new DOMDocument();
$dom->loadHTML($content);
// To hold all your liv...
$lis = array();
// Get all li nodes
$liNodes = $dom->getElementsByTagName(\"li\");
foreach($liNodes as $liNode) {
  // Check the class attr of each li
  $cl = $liNode->getAttribute(\"class\");
  if ($cl != \"Unplayed\")
       $lis[] = innerHTML($liNode);
}
print_r($lis);

以上输入html的输出：

Array
(
    [0] => 
                <a href=\"http://live.xbox.com/en-us/GameCenter/Achievements?title=1464993792&amp;compareTo=Stallion83\">
                   <img src=\"http://tiles.xbox.com/tiles/vD/fP/1Gdsb2JhbA9ECgUPGgIfVl9TL2ljb24vMC84MDAwIAAAAAAAAPvgN6M=.jpg\" alt=\"F.E.A.R. 3\" title=\"F.E.A.R. 3\"><span class=\"Title\">F.E.A.R. 3</span>
                   <span class=\"LastPlayed\">6/24/2011</span>
                   <span class=\"EarnedGamerscore\">415</span>
                   <span class=\"AvailableGamerscore\">1000</span>
                   <span class=\"EarnedAchievements\">23</span>
                   <span class=\"AvailableAchievements\">50</span>
                   <span class=\"PercentageComplete\">46%</span>
                </a>            

    [1] => 
                <a href=\"http://live.xbox.com/en-US/GameCenter/Achievements?title=1096157212&amp;compareTo=Im%20RedJ\">
                   <img src=\"http://tiles.xbox.com/tiles/HI/L4/1Gdsb2JhbA9ECgQJGgYfVl4gL2ljb24vMC84MDAwIAAAAAAAAPvXggM=.jpg\" alt=\"Call of Duty: WaW\" title=\"Call of Duty: WaW\"><span class=\"Title\">Call of Duty: WaW</span>
                   <span class=\"LastPlayed\">6/21/2011</span>
                   <span class=\"EarnedGamerscore\">1500</span>
                   <span class=\"AvailableGamerscore\">1500</span>
                   <span class=\"EarnedAchievements\">66</span>
                   <span class=\"AvailableAchievements\">66</span>
                   <span class=\"PercentageComplete\">100%</span>
                </a> 
)