php - 如何组合 sql 表中的 2 列来搜索全名

Question

I have a mySQL database with a FirstName and LastName column and presently i have a search query searching for Lastnames, and When the LastNames match they are echoed on screen along with the FirstName from it's row, Now thats great, what i will like to find out is how can a make the query search for FullNames that are typed into the input feild, keep in mind that i do not have a FullName column the full name will be what the user types in, bellow is an example of what I presently have working! Thanks.

if(isset($_GET['name'])){   
    $raw_name=$_GET['name'];

    if(preg_match("/[A-Z | a-z]+/", $raw_name)){        
        $name=$raw_name;        
        include "connect.php";      
        //-query the database table
        $sql="SELECT userId, FirstName, LastName FROM residential2 WHERE FirstName='" . $name   ."'";
        //-run the query against the mysql query function
        $result=mysql_query($sql);
        //-count results
        $numrows=mysql_num_rows($result);

        echo "<div align=\"center\">" . $numrows . " results found for " . stripslashes($name) . "</div>";

        while($row=mysql_fetch_array($result)){         
            $FirstName =$row['FirstName'];
            $LastName=$row['LastName'];
            $userId=$row['userId']; 
            //-display the result of the array
            echo "<ul>\n"; 
            echo "<li>" . "<a href=\"index.php?id=$userId\">" . $LastName . " "  .$FirstName . "   </a></li>\n";
            echo "</ul>";
        }
    }
    else {      
        echo "<p>Please enter a search query</p>";
    }
}

Answer 1

使用concat()

$sql="SELECT userId, CONCAT(FirstName, ' ', LastName) AS fullname FROM residential2 WHERE FirstName='" . $name   ."'";

<?php
    $fullname = $row['fullname']; 
?>