doukenqiong0588 2014-08-19 15:41
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删除两个'</ p>'之间的空格

I'm trying to replace double generated </p> with:

$excerpt = str_replace('</p></p>', '</p>', $excerpt);

But my PHP generates a lot of spaces between first </p> and second </p>

How to remove all spaces between the </p> tags?

My string looks like that:

<blockquote>
  <p>Text</p> <!-- here's unknown amount of space generated by php --> </p>
</blockquote>

This is related to this question on WordPress Stackexchange.

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  • doubailian4459 2014-08-19 15:45
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    Using preg_replace() you can make this substitution using the following regular expression:

    /<\/p>\s+<\/p>/
    

    Your code would look something like this:

    $pat = '/<\/p>\s+<\/p>/';
    $replacement = '<\p>';
    $excerpt = preg_replace( $pat, $replacement, $excerpt );
    

    Lets break this regular expression:

    1. <\/p> - matches a closing <\p> element (note the escaping of the slash)
    2. \s+ - matches one or more whitespace characters
    3. <\/p> - matches a closing <\p> element (note the escaping of the slash)

    Usually you would need an add a global modifier g to the regular expression so that the substitution will occur for every occurrence of the matched pattern but the preg_replace function will perform global replacements by default.

    Here is an example that you can test and play with - http://regex101.com/r/dA3kU0/2

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