mysql / sql用一个关键字字符串搜索名字和姓氏

Question

I have the following fields: firstname and lastname keyword is $keyword if someone searches for: John Doe I want it to be able to return results. now it returns results if its john, or if its doe. here is the code:

$q1 = strtolower($_GET["q"]);
$q=str_replace(" ","%",$q1);
$sql = "select DISTINCT users.*, user_id FROM users WHERE $email_filter 
firstname LIKE '%$q%' OR lastname LIKE '%$q%' ORDER BY lastname";
$rsd = mysql_query($sql);
while($rs = mysql_fetch_array($rsd)) { echo $results }

any help would be greatly appreciated thank you!

Answer 1

Hope this link help you

http://dev.mysql.com/doc/refman/5.5/en/fulltext-boolean.html

Answer 2

You want cases where the first name and the last name match your parameters, not the first name or the last name so it should be firstname LIKE '%$q%' AND lastname LIKE '%$q%'

Keep in mind that since you are using LIKE, if the name is John Doe, Johnnie Doe, John Does, Johnnie Does these will all be returned along with any other records where the first name contains John and the last name contains Doe.

Answer 3

If the user provides a response like "John Doe" this should trim any extra white space, break the provided names into values and query on them based on your provided code:

$q1 = trim(strtolower($_GET["q"]));
$name = explode(" ",$q1);
$fname = $name[0];
$lname = $name[1];
$sql = "select DISTINCT users.*, user_id FROM users WHERE $email_filter 
firstname LIKE '%$fname%' OR lastname LIKE '%$lname%' ORDER BY lastname";
$rsd = mysql_query($sql);
while($rs = mysql_fetch_array($rsd)) { echo $results; }

hope it helps