How to use search_excerpt() function from core search module?

Question

I want to use the function search_excerpt() to generate excerpts. Unfortunately this function is returning exactly same text as I submit. For example I tried this:

$test = (search_excerpt('test', 'this is a test'));
print $test;

This is returning "this is a test".

I was expecting more something like:

"this is a test"

What is wrong in my code?

Answer 1

Try this code.I have just added a space after the string and this will surely work

$string = 'this is a test';   
$test = (search_excerpt('test', $string.' '));
print $test;

In the search_excerpt() if the search text is the last one, then preg_replace omits the search text.In order to overcome this I just added a empty space to the string.

// Highlight keywords. Must be done at once to prevent conflicts ('strong' and '<strong>').
  $text = preg_replace('/' . $boundary . '(' . implode('|', $keys) . ')' . $boundary . '/iu', '<strong>\0</strong>', $text);

Answer 2

Normal behaviour for this function, see the documentation: https://api.drupal.org/api/drupal/modules!search!search.module/function/search_excerpt/7

Try this code:

$test = (search_excerpt('test', 'this is a test'));
print '"'.$test.'"';