curl multi-threading

I need a script developed which uses curl multi-threading to fetch results from supplied url. What will be your task? 1- Fetch URLs from database 2- Add those URLs into curl script 3- Curl Multi-threading should be able to load at least 20-30 URLs in one go. 4- After the data from URL is fetched, it should find a match to keyword "target" in the source. 5- If the keyword "target" is found in the source then it should add response into the table. For example. If they URL is fetched from row 32 i.e. id=32 then this table has 3 columns= id, site, response. Then it should add response in response column under row 32. 6- curl should keep working like that until and unless all the urls are fetched and there responses are added into the column. 7- Faster the curl performs the more chances of your reward. 8- I need it done within 2-3 hours as it is not a big project. Have any questions feel free to ask me.