PHP DOMDocument用文本节点替换多个子节点
我有一个示例字符串,如下所示:PHP DOMDocument用文本节点替换多个子节点,php,html,domdocument,Php,Html,Domdocument,我有一个示例字符串,如下所示: $feed_status = "Nice to see you all back again <img src=\"http://52.1.47.143/file/pic/emoticon/default/smile.png\" alt=\"Smile\" title=\"Smile\" title=\"v_middle\" /><img src=\"http://52.1.47.143/file/pic/emoticon/default/smi
$feed_status = "Nice to see you all back again <img src=\"http://52.1.47.143/file/pic/emoticon/default/smile.png\" alt=\"Smile\" title=\"Smile\" title=\"v_middle\" /><img src=\"http://52.1.47.143/file/pic/emoticon/default/smile.png\" alt=\"Smile\" title=\"Smile\" title=\"v_middle\" /><img src=\"http://52.1.47.143/file/pic/emoticon/default/smile.png\" alt=\"Smile\" title=\"Smile\" title=\"v_middle\" />";
在echo$feed_status之后,我想要的输出字符串应该如下所示代码>:
$feed\u status=很高兴再次见到大家\ue056\ue056\ue056强>
提前感谢。您有:
$doc = new DOMDocument();
$doc->loadHTML($feed_status);
$imageTags = $doc->getElementsByTagName('img');
if(count($imageTags)) {
$emoticon_codes = array();
foreach($imageTags as $tag) {
if (basename($tag->getAttribute('src')) == 'evilgrin.png') {
array_push($emoticon_codes, '\ue404');
}
if (basename($tag->getAttribute('src')) == 'grin.png') {
array_push($emoticon_codes, '\ue415');
}
if (basename($tag->getAttribute('src')) == 'happy.png') {
array_push($emoticon_codes, '\ue057');
}
if (basename($tag->getAttribute('src')) == 'smile.png') {
array_push($emoticon_codes, '\ue056');
}
if (basename($tag->getAttribute('src')) == 'surprised.png') {
array_push($emoticon_codes, '\ue107');
}
if (basename($tag->getAttribute('src')) == 'tongue.png') {
array_push($emoticon_codes, '\ue105');
}
if (basename($tag->getAttribute('src')) == 'unhappy.png') {
array_push($emoticon_codes, '\ue403');
}
if (basename($tag->getAttribute('src')) == 'waii.png') {
array_push($emoticon_codes, '\ue407');
}
if (basename($tag->getAttribute('src')) == 'wink.png') {
array_push($emoticon_codes, '\ue405');
}
}
/*Till here everything works fine. The array $emoticon_codes is also getting generated finely*/
/*Following is the code giving problem to me,*/
$t = 0;
foreach($imageTags as $img) {
$img->parentNode->replaceChild($img, $doc->createTextNode($emoticon_codes[$t]));
$t++;
if ($t > count($emoticon_codes)) {
break;
}
}
}
但是,它仅循环通过$imageTags
,而不是$emoticon\u code
你需要这个:
foreach($imageTags as $img) {
$img->parentNode->replaceChild($img, $doc->createTextNode($emoticon_codes[$t]));
$t++;
if ($t > count($emoticon_codes)) {
break;
}
}
如果您试图更改多个子项,则需要一些子项来进行一些更改,我建议尝试将每个替换项映射到一个数组中,而不是使用多个If语句。例如:
foreach($imageTags as $img) {
foreach($emoticon_codes as $emoticon_code) {
$img->parentNode->replaceChild($img, $doc->createTextNode($emoticon_code));
}
}
$feed\u status=“很高兴再次见到你们”;
$doc=新的DOMDocument();
@$doc->loadHTML($feed_status,LIBXML_HTML_NOIMPLIED,LIBXML_HTML_NODEFDTD);
$imageTags=$doc->getElementsByTagName('img');
$replacements=数组(
'evilgrin.png'=>'\ue404',
'grin.png'=>'\ue415',
'happy.png'=>'\ue057',
'smile.png'=>'\ue056',
'惊奇.png'=>'\ue107',
'tangle.png'=>'\ue105',
'unhappy.png'=>'\ue403',
'waii.png'=>'\ue407',
'wink.png'=>'\ue405',
);
//回归
$i=$imageTags->length-1;
而($i>-1){
$tag=$imageTags->item($i);
$basename=basename($tag->getAttribute('src'));
if(isset($replacements[$basename]){//如果文件名匹配
//替换
$r=$replacements[$basename];
$text=$doc->createTextNode($r);
$tag->parentNode->replaceChild($text,$tag);
}
$i--;
}
//再次追加到字符串容器
$feed_status='';
foreach($doc->childNodes->item(0)->childNodes作为$e){
$feed_status.=$doc->saveHTML($e);
}
echo$feed_状态;
还是一样的问题。在我的代码中,我通过使用变量$t使用数组$emoticon_代码中的每个元素,并且每次迭代都初始化并增加一个元素。肯定还有其他问题。非常感谢您的大力帮助。它对我非常有效。再次衷心感谢。@user2839497当然,我很高兴这有帮助
$feed_status = "Nice to see you all back again <img src=\"http://52.1.47.143/file/pic/emoticon/default/smile.png\" alt=\"Smile\" title=\"Smile\" title=\"v_middle\" /><img src=\"http://52.1.47.143/file/pic/emoticon/default/smile.png\" alt=\"Smile\" title=\"Smile\" title=\"v_middle\" /><img src=\"http://52.1.47.143/file/pic/emoticon/default/smile.png\" alt=\"Smile\" title=\"Smile\" title=\"v_middle\" />";
$doc = new DOMDocument();
@$doc->loadHTML($feed_status, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
$imageTags = $doc->getElementsByTagName('img');
$replacements = array(
'evilgrin.png' => '\ue404',
'grin.png' => '\ue415',
'happy.png' => '\ue057',
'smile.png' => '\ue056',
'surprised.png' => '\ue107',
'tongue.png' => '\ue105',
'unhappy.png' => '\ue403',
'waii.png' => '\ue407',
'wink.png' => '\ue405',
);
// regression
$i = $imageTags->length - 1;
while($i > -1) {
$tag = $imageTags->item($i);
$basename = basename($tag->getAttribute('src'));
if(isset($replacements[$basename])) { // if the file name matches
// make replacements
$r = $replacements[$basename];
$text = $doc->createTextNode($r);
$tag->parentNode->replaceChild($text, $tag);
}
$i--;
}
// append to string container again
$feed_status = '';
foreach($doc->childNodes->item(0)->childNodes as $e) {
$feed_status .= $doc->saveHTML($e);
}
echo $feed_status;