PHP和MySql匹配字符串中的Word / Phrase

Question

i have a Table in MySql with Cities.

|---------------------|------------------|
|          ID         |     City         |
|---------------------|------------------|
|          1          |     Berlin       |
|---------------------|------------------|
|          2          |     Los Angeles  |
|---------------------|------------------|
|          3          |     Shanghai     |
|---------------------|------------------|

and i have a String in Php like this: $string = "I like Berlin and Los Angeles."

Now i want look in the MySql-Database if the String contains a City/Cities. But i dont know what is the best solution. Maybe its better or/and faster to have the List with Cities as Json File?

Answer 1

You an use mysql query for checking it.

Select * from table_name where match(City) against ('I like Berlin and Los Angeles')

or you can use like

Select * from table_name where city like '%I like Berlin and Los Angeles%'

I am modified the query as you need the sort mechanism in it.

Select *,(match(City) against ('I like Los Angeles  and Berlin')) as relevance  from city 
where match(City) against ('I like Los Angeles and  Berlin') ORDER BY relevance ASC;

It would give you sort on city present in table.

Answer 2

You should take all cities from database to an array then checking it.

$cities = ['Berlin', 'Los Angeles', 'Shanghai'];
$string = 'I like Berlin and Los Angeles.';
$result = [];
$pattern = '/('.implode('|', $cities).')/';
preg_match_all($pattern, $string, $result);

SAMPLE: http://phpio.net/s/2t70