我使用以下代码在我的内容中放置一些广告代码.
<?PHP
$content = apply_filters('the_content',$post->post_content);
$content = explode (' ',$content);
$halfway_mark = ceil(count($content) / 2);
$first_half_content = implode(' ',array_slice($content,$halfway_mark));
$second_half_content = implode(' ',$halfway_mark));
echo $first_half_content.'...';
echo ' YOUR ADS CODE';
echo $second_half_content;
?>
如何修改此设置,以便我可以在仅文本段落之间同时放置2个广告(包含广告的< p> …< / p>不应包含图片或嵌入的视频).
我想避免使用jQuery.
我的用例示例……
>我想在本文中插入2个广告块.
>我希望第一个广告块在第一段之后.但是应删除第1段中的任何图像.
>对于第二个广告,它应该放在文章的后半部分中,在纯文本段落之间,这样广告代码在大量文本之间切换,并且永远不会非常接近嵌入的图像或视频等.
> 2个广告之间至少应有2个段落
这是我对这个问题的处理方法.很抱歉发布有点迟了(并且错过了赏金:-(),但这是一个忙碌的一周,所以我做了一切都是点点滴滴.
快速响彻
>我没有删除第一段中的附件.我真的不明白为什么内容必须为广告而被破坏
>我在代码中做了很多检查,试图确保广告仅插入文本段落之间.仅文本段落被视为不包含img,li和ul标记的段落
>我已正确记录每个代码块,因此您可以轻松完成每个部分.如果有必要,我还添加了你需要注意的todo doc块
>我使用wptexturize将p标签应用于the_content.每个双折线构成一个段落
>根据需要修改并使用此代码.我已经对它进行了测试,因此我身上没有错误.
这是代码.希望这对你有用. * PS！所有这些都进入你的functions.PHP.您的模板文件不需要任何其他代码或mod
<?PHP
add_filter( 'the_content','so_25888630_ad_between_paragraphs' );
function so_25888630_ad_between_paragraphs($content){
/**-----------------------------------------------------------------------------
*
* @author Pieter Goosen <https://stackoverflow.com/users/1908141/pieter-goosen>
* @return Ads in between $content
* @link https://stackoverflow.com/q/25888630/1908141
*
* Special thanks to the following answers on my questions that helped me to
* to achieve this
* - https://stackoverflow.com/a/26032282/1908141
* - https://stackoverflow.com/a/25988355/1908141
* - https://stackoverflow.com/a/26010955/1908141
* - http://wordpress.stackexchange.com/a/162787/31545
*
*------------------------------------------------------------------------------*/
if( in_the_loop() ){ //Simply make sure that these changes effect the main query only
/**-----------------------------------------------------------------------------
*
* wptexturize is applied to the $content. This inserts p tags that will help to
* split the text into paragraphs. The text is split into paragraphs after each
* closing p tag. Remember,each double break constitutes a paragraph.
*
* @todo If you really need to delete the attachments in paragraph one,you want
* to do it here before you start your foreach loop
*
*------------------------------------------------------------------------------*/
$closing_p = '</p>';
$paragraphs = explode( $closing_p,wptexturize($content) );
/**-----------------------------------------------------------------------------
*
* The amount of paragraphs is counted to determine add frequency. If there are
* less than four paragraphs,only one ad will be placed. If the paragraph count
* is more than 4,the text is split into two sections,$first and $second according
* to the midpoint of the text. $totals will either contain the full text (if
* paragraph count is less than 4) or an array of the two separate sections of
* text
*
* @todo Set paragraph count to suite your needs
*
*------------------------------------------------------------------------------*/
$count = count( $paragraphs );
if( 4 >= $count ) {
$totals = array( $paragraphs );
}else{
$midpoint = floor($count / 2);
$first = array_slice($paragraphs,$midpoint );
if( $count%2 == 1 ) {
$second = array_slice( $paragraphs,$midpoint,true );
}else{
$second = array_slice( $paragraphs,$midpoint-1,true );
}
$totals = array( $first,$second );
}
$new_paras = array();
foreach ( $totals as $key_total=>$total ) {
/**-----------------------------------------------------------------------------
*
* This is where all the important stuff happens
* The first thing that is done is a work count on every paragraph
* Each paragraph is is also checked if the following tags,a,li and ul exists
* If any of the above tags are found or the text count is less than 10,0 is
* returned for this paragraph. ($p will hold these values for later checking)
* If none of the above conditions are true,1 will be returned. 1 will represent
* paragraphs that qualify for add insertion,and these will determine where an ad
* will go
* returned for this paragraph. ($p will hold these values for later checking)
*
* @todo You can delete or add rules here to your liking
*
*------------------------------------------------------------------------------*/
$p = array();
foreach ( $total as $key_paras=>$paragraph ) {
$word_count = count(explode(' ',$paragraph));
if( preg_match( '~<(?:img|ul|li)[ >]~',$paragraph ) || $word_count < 10 ) {
$p[$key_paras] = 0;
}else{
$p[$key_paras] = 1;
}
}
/**-----------------------------------------------------------------------------
*
* Return a position where an add will be inserted
* This code checks if there are two adjacent 1's,and then return the second key
* The ad will be inserted between these keys
* If there are no two adjacent 1's,"no_ad" is returned into array $m
* This means that no ad will be inserted in that section
*
*------------------------------------------------------------------------------*/
$m = array();
foreach ( $p as $key=>$value ) {
if( 1 === $value && array_key_exists( $key-1,$p ) && $p[$key] === $p[$key-1] && !$m){
$m[] = $key;
}elseif( !array_key_exists( $key+1,$p ) && !$m ) {
$m[] = 'no-ad';
}
}
/**-----------------------------------------------------------------------------
*
* Use two different ads,one for each section
* Only ad1 is displayed if there is less than 4 paragraphs
*
* @todo Replace "PLACE YOUR ADD NO 1 HERE" with your add or code. Leave p tags
* @todo I will try to insert widgets here to make it dynamic
*
*------------------------------------------------------------------------------*/
if( $key_total == 0 ){
$ad = array( 'ad1' => '<p>PLACE YOUR ADD NO 1 HERE</p>' );
}else{
$ad = array( 'ad2' => '<p>PLACE YOUR ADD NO 2 HERE</p>' );
}
/**-----------------------------------------------------------------------------
*
* This code loops through all the paragraphs and checks each key against $mail
* and $key_para
* Each paragraph is returned to an array called $new_paras. $new_paras will
* hold the new content that will be passed to $content.
* If a key matches the value of $m (which holds the array key of the position
* where an ad should be inserted) an add is inserted. If $m holds a value of
* 'no_ad',no ad will be inserted
*
*------------------------------------------------------------------------------*/
foreach ( $total as $key_para=>$para ) {
if( !in_array( 'no_ad',$m ) && $key_para === $m[0] ){
$new_paras[key($ad)] = $ad[key($ad)];
$new_paras[$key_para] = $para;
}else{
$new_paras[$key_para] = $para;
}
}
}
/**-----------------------------------------------------------------------------
*
* $content should be a string,not an array. $new_paras is an array,which will
* not work. $new_paras are converted to a string with implode,and then passed
* to $content which will be our new content
*
*------------------------------------------------------------------------------*/
$content = implode( ' ',$new_paras );
}
return $content;
}
编辑
从你的评论：
>您应该使用以下代码来调试< pre><？PHP var_dump($NAME_OF_VARIABLE); ？>< /预取代.对于您的第一个问题,我将使用？>< pre><？PHP var_dump($paragraph); ？>< / pre><？PHP就在这行$paragraph = explode($closing_p,wpautop($content));准确地看看内容是如何分开的.这将让您了解您的内容是否正确分割.
>还使用？>< pre><？PHP var_dump($p); ？>< / pre><？PHP就在此行之后$p = array();检查特定段落的值.请记住,带有img,li和ul标签的段落应该有0,而且段落少于10个单词.其余的应该是1
>编辑 – >解决了剥离段落的问题.谢谢你指出这个漏洞给我.从未意识到这一点我已经更新了代码,所以只需复制并粘贴它即可
编辑2
请注意,您无法使用所使用的在线工具测试代码.这并不是the_content()输出内容的真实反映.您使用在线工具看到的输出将被过滤并标记,然后作为the_content()发送到屏幕.如果您使用Google Chrome等浏览器检查输出,则会看到正确应用了p标记.
我还在代码中更改了带有image标签的a标签