PHP substr防止由于html标签引起的链接

Question

I have a blog website which lists all of the latest blogs on the homepage with a photo, limited text and then a text link to the full blog post. The problem is that if I have an tag within the blog text, it gets in the way of the blog link.

What I mean is:

If this is my blog post - " Hello, I am wayne, writer of <a href="website.com">Bloggers Weekly</a> and this is my first article "

And I want to abbreviate this to display 40 characters, or "Hello, I am wayne, writer of Bloggers W ... Read More"

The Read More link doesn't show up properly because in the original html there is already an <a> tag which prevents the second link from working. Is there any way around this?

Answer 1

您可以使用strip_tags从字符串中删除HTML标签。

Answer 2

在回显博客文章之前，可以使用strip_tags删除HTML标记。

echo substr(strip_tags($blog_post),0,40);

Answer 3

you can check for the opening less than symbol before shortening the string, or lengthen the string if you want to keep the link.

$shortString = ($openPos = strpos($shortString, '<a')) !== false ? substr($shortString, 0 , ($openPos - 2) : substr($yourString,0,40);

This will cut it short just before the opening

otherwise if you want to keep the link you can use the same method and extend the short description

$shortString = ($closePos = strpos($yourString, '</a>')) !== false ? substr($yourString, 0 , ($closePos + 3) : substr($yourString,0,40);

I haven't tested this, but it should leave the link intact. Note the these will make the string less than 40 characters if the closing/opening 'a' tag comes before the first 40 characters.

The benefit to this over strip tags is that you wont leave something that should be a link in the text if you don't want it to be a link. ie.. 'Click here' text that is not clickable.

Answer 4

Try this ,

    $string = "Hello, I am wayne, writer of Bloggers Weekly and this is my first article";

           if (strlen($string) > 40) 
            {

                // truncate string
                $stringCut  = substr($string, 0, 40);
                $read_more = 'read more..'."<a href='website.com'>";                    
                $string     = substr($stringCut, 0, strrpos($stringCut, ' ')).$read_more;
            }

echo $string;

Answer 5

Read More link is not working properly because when you use substr, substr also inlcudes partial anchor tag. So better way is first remove tags and then apply anchor tag to Read More only.

<?
echo substr(strip_tags($blog),0,40) . "<a href='#link'>Read More </a>";

?>