将post_content传递给函数时出错

此函数的目的是简单地将第一次出现的关键字包装为粗体标记。我在下面标记的行上发现一个错误。

警告：DOMDocument：：loadHTML（）[DOMDocument.loadHTML]：在C:\\xamplite\\htdocs\\testsite\\wp content\\plugins\\mylugin\\test中的第4行分析实体中的属性名称时出错。php在线40

这是传递post\\u内容对象的正确方法吗？

add_filter(\'wp_insert_post_data\', \'my_bold_keyword\' );
function my_bold_keyword($content){
  $myKeyword = "test 123";
  $d = new DOMDocument();
  $d->loadHTML($content[\'post_content\']); //ERROR OCCURS HERE
  $x = new DOMXpath($d);
  $Matches = $x->query("//text()[contains(.,$myKeyword) and not(ancestor::h1) and not(ancestor::h2) and not(ancestor::h3) and not(ancestor::h4) and not(ancestor::h5) and not(ancestor::h6)]");
  if($Matches && $Matches->length > 0){
    $myText = $Matches->item(0);
    // need to wrap #myText in <b> wrapper
  }
  return $content;
}

add_filter(\'wp_insert_post_data\', \'my_bold_keyword\', 10, 2 ); function my_bold_keyword( $data, $postarr ) { $myKeyword = "test 123"; $d = new DOMDocument(); $d->loadHTML($postarr[\'post_content\']); //ERROR NO LONGER OCCURS HERE $x = new DOMXpath($d); $Matches = $x->query("//text()[contains(.,$myKeyword) and not(ancestor::h1) and not(ancestor::h2) and not(ancestor::h3) and not(ancestor::h4) and not(ancestor::h5) and not(ancestor::h6)]"); if($Matches && $Matches->length > 0){ $myText = $Matches->item(0); // need to wrap #myText in <b> wrapper } return $content; }

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