Php get_meta_标记不';t获取结果(帮助)
我想通过用户输入youtube url并在结果中获取关键字或标记 但我不知道怎么了 当我点击提交按钮时,什么也没发生Php get_meta_标记不';t获取结果(帮助),php,html,Php,Html,我想通过用户输入youtube url并在结果中获取关键字或标记 但我不知道怎么了 当我点击提交按钮时,什么也没发生 <?php if( isset($_GET['submit']) ){ $yt = htmlentities($_GET['yt']); $tags = get_meta_tags('$yt'); echo $tags['keywords']; // php documentation ?> Html 提前感谢以下是一个工作示例 &
<?php if( isset($_GET['submit']) ){ $yt = htmlentities($_GET['yt']);
$tags = get_meta_tags('$yt');
echo
$tags['keywords']; // php documentation ?>
Html
提前感谢以下是一个工作示例
<form >
<input type="text" name="yt" id="yt" placeholder="https://youtu.be/jhCD4yCcogE" value="https://youtu.be/jhCD4yCcogE" />
<input type="submit" name="submit"/>
</form>
代码中有3个小错误:submit
您正在检查submit
$yt
有点错误。如果要将变量作为参数发送给函数,则无需使用“$yt”将其包装array (size=22)
'theme-color' => string '#ff0000' (length=7)
'title' => string 'Google My Business Website Tutorial | How to Create free website of Google my business 2020' (length=91)
'description' => string 'Learn how to create google my business website in 5 minutes (complete tutorial). In tutorial will know about description, how to google my business edit with...' (length=160)
'keywords' => string 'Google My Business Website Tutorial google my business website builder tutorial, free website, google my business, How To Create a Free Website For Google My...' (length=160)
'twitter:card' => string 'player' (length=6)
'twitter:site' => string '@youtube' (length=8)
'twitter:url' => string 'https://www.youtube.com/watch?v=jhCD4yCcogE' (length=43)
'twitter:title' => string 'Google My Business Website Tutorial | How to Create free website of Google my business 2020' (length=91)
'twitter:description' => string 'Learn how to create google my business website in 5 minutes (complete tutorial). In tutorial will know about description, how to google my business edit with...' (length=160)
'twitter:image' => string 'https://i.ytimg.com/vi/jhCD4yCcogE/maxresdefault.jpg' (length=52)
'twitter:app:name:iphone' => string 'YouTube' (length=7)
'twitter:app:id:iphone' => string '544007664' (length=9)
'twitter:app:name:ipad' => string 'YouTube' (length=7)
'twitter:app:id:ipad' => string '544007664' (length=9)
'twitter:app:url:iphone' => string 'vnd.youtube://www.youtube.com/watch?v=jhCD4yCcogE&feature=applinks' (length=70)
'twitter:app:url:ipad' => string 'vnd.youtube://www.youtube.com/watch?v=jhCD4yCcogE&feature=applinks' (length=70)
'twitter:app:name:googleplay' => string 'YouTube' (length=7)
'twitter:app:id:googleplay' => string 'com.google.android.youtube' (length=26)
'twitter:app:url:googleplay' => string 'https://www.youtube.com/watch?v=jhCD4yCcogE' (length=43)
'twitter:player' => string 'https://www.youtube.com/embed/jhCD4yCcogE' (length=41)
'twitter:player:width' => string '1280' (length=4)
'twitter:player:height' => string '720' (length=3)
下面是一个工作示例
<form >
<input type="text" name="yt" id="yt" placeholder="https://youtu.be/jhCD4yCcogE" value="https://youtu.be/jhCD4yCcogE" />
<input type="submit" name="submit"/>
</form>
代码中有3个小错误:submit
您正在检查submit
$yt
有点错误。如果要将变量作为参数发送给函数,则无需使用“$yt”将其包装array (size=22)
'theme-color' => string '#ff0000' (length=7)
'title' => string 'Google My Business Website Tutorial | How to Create free website of Google my business 2020' (length=91)
'description' => string 'Learn how to create google my business website in 5 minutes (complete tutorial). In tutorial will know about description, how to google my business edit with...' (length=160)
'keywords' => string 'Google My Business Website Tutorial google my business website builder tutorial, free website, google my business, How To Create a Free Website For Google My...' (length=160)
'twitter:card' => string 'player' (length=6)
'twitter:site' => string '@youtube' (length=8)
'twitter:url' => string 'https://www.youtube.com/watch?v=jhCD4yCcogE' (length=43)
'twitter:title' => string 'Google My Business Website Tutorial | How to Create free website of Google my business 2020' (length=91)
'twitter:description' => string 'Learn how to create google my business website in 5 minutes (complete tutorial). In tutorial will know about description, how to google my business edit with...' (length=160)
'twitter:image' => string 'https://i.ytimg.com/vi/jhCD4yCcogE/maxresdefault.jpg' (length=52)
'twitter:app:name:iphone' => string 'YouTube' (length=7)
'twitter:app:id:iphone' => string '544007664' (length=9)
'twitter:app:name:ipad' => string 'YouTube' (length=7)
'twitter:app:id:ipad' => string '544007664' (length=9)
'twitter:app:url:iphone' => string 'vnd.youtube://www.youtube.com/watch?v=jhCD4yCcogE&feature=applinks' (length=70)
'twitter:app:url:ipad' => string 'vnd.youtube://www.youtube.com/watch?v=jhCD4yCcogE&feature=applinks' (length=70)
'twitter:app:name:googleplay' => string 'YouTube' (length=7)
'twitter:app:id:googleplay' => string 'com.google.android.youtube' (length=26)
'twitter:app:url:googleplay' => string 'https://www.youtube.com/watch?v=jhCD4yCcogE' (length=43)
'twitter:player' => string 'https://www.youtube.com/embed/jhCD4yCcogE' (length=41)
'twitter:player:width' => string '1280' (length=4)
'twitter:player:height' => string '720' (length=3)
将
get_meta_标记('yt')
更改为get_meta_标记($yt)
(传递变量而不是文本)。。这里也不需要htmlentities()
,因为您没有将值输出到客户端。对于未来,始终包括对您的问题的完整和详细的解释。仅仅说“它不起作用”并不能真正告诉我们你的问题。@Magnus Eriksson让我更新并得到it@MagnusEriksson更新代码后什么也没发生我的建议中没有把变量放在单引号内。这将传递文本字符串$yt
,而不是变量的值。您需要传递实际变量:get\u meta\u tags($yt)
。我也不明白你为什么在这里使用htmlentities()
。当您输出值时(如echo
),它用于将HTML转义到实体中。它在这里毫无用处。将get\u meta\u标记('yt')
更改为get\u meta\u标记($yt)
(传递变量而不是文本)。。这里也不需要htmlentities()
,因为您没有将值输出到客户端。对于未来,始终包括对您的问题的完整和详细的解释。仅仅说“它不起作用”并不能真正告诉我们你的问题。@Magnus Eriksson让我更新并得到it@MagnusEriksson更新代码后什么也没发生我的建议中没有把变量放在单引号内。这将传递文本字符串$yt
,而不是变量的值。您需要传递实际变量:get\u meta\u tags($yt)
。我也不明白你为什么在这里使用htmlentities()
。当您输出值时(如echo
),它用于将HTML转义到实体中。非常感谢您的更正和详细解释。非常感谢您的更正和详细解释。