PHP在字符串中查找单词

Question

我有以下关键字。我希望最终答案（可能是 answer_1、answer_2、answer_3）是包含“问题”中的关键字的答案。$question = 'how old are you'$key_word_1 = array('old', 'are');$answer_1 = 'this is my age';$key_word_2 = array('yes', 'no');$answer_2 = 'this is a question';$key_word_3 = array('tall', 'short');$answer_3 = 'this are my measures';$key_word_4 = array('back', 'blue');$answer_4 = 'My colorus';echo $final_answer;'this is my age' . #----> because 'old' and 'are' are contained in $question

Answer 1

我会这样做（使用array_intersect）：

$question = 'how old are you';

$question_array = explode(' ',$question);

$answers_array[0]['keywords'] = array('old', 'are');

$answers_array[0]['answer'] = 'this is my age';

$answers_array[1]['keywords'] = array('yes', 'no');

$answers_array[1]['answer'] = 'this is a question';

$answers_array[2]['keywords'] = array('tall', 'short');

$answers_array[2]['answer'] = 'this are my measures';

$answers_array[3]['keywords'] = array('back', 'blue');

$answers_array[3]['answer'] = 'My colorus';

foreach($answers_array as $key=> $answer)

{

    if(sizeof(array_intersect($answers_array[$key]['keywords'], $question_array)) == sizeof($answers_array[$key]['keywords']))

    {

        $final_answer = $answers_array[$key]['answer'];

    }

}

echo $final_answer;