2

If it was just searching for a single word, it would have been easy, but the needle can be a word or more than a word.

Example
 $text = "Dude,I am going to watch a movie, maybe 2c Rio 3D or Water for Elephants, wanna come over";
 $words_eg1 = array ('rio 3d', 'fast five', 'sould surfer');
 $words_eg2 = array ('rio', 'fast five', 'sould surfer');
 $words_eg3 = array ('Water for Elephants', 'fast five', 'sould surfer');

'
 is_words_in_text ($words_eq1, $text)   / true, 'Rio 3D' matches with 'rio 3d'
 is_words_in_text ($words_eq2, $text)   //true, 'Rio' matches with 'rio'
 is_words_in_text ($words_eq3, $text)   //true, 'Water for Elephants'

Thank you,

Alix Axel
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Andy W.
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  • have you considered strpos: http://www.php.net/manual/en/function.strpos.php, check the examples below. – Igor Apr 30 '11 at 22:34
  • 1
    possible duplicate of [What is the fastest way to find the occurrence of a string in another string?](http://stackoverflow.com/questions/5821483/what-is-the-fastest-way-to-find-the-occurrence-of-a-string-in-another-string) – Alix Axel Apr 30 '11 at 22:34
  • I am voting to close, but this question is a little different since it deals with case insensitive strings and word boundaries - you decide. – Alix Axel Apr 30 '11 at 22:42

2 Answers2

3

In your case stripos() will probably do the trick:

function is_words_in_text($words, $string)
{
    foreach ((array) $words as $word)
    {
        if (stripos($string, $word) !== false)
        {
            return true;
        }
    }

    return false;
}

But this will match also non-words (as in te in Water), to fix this we can use preg_match():

function is_words_in_text($words, $string)
{
    foreach ((array) $words as $word)
    {
        if (preg_match('~\b' . preg_quote($word, '~') . '\b~i', $string) > 0)
        {
            return true;
        }
    }

    return false;
}

All searches are done in a case-insensitive way, $words can either be a string or an array.

Alix Axel
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0

You could iterate over the elements of $words_eg1, 2, 3 and stop as soon as strpos or strstr returns a non-false value.

Scott C Wilson
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