Select rows based on textarea value

问题

Depending on the search pattern I need to get the data displayed from the server.

include("dbconfig.php");
$sql="select * from blog where title LIKE '{$title}%'";
$res=mysql_query($sql);
while($row=mysql_fetch_array($res))
{
    echo"<tr>";
        echo"<td><img src='uploads/".$row['file']."' height='150px' width='200px'</td>";
        echo"<td><h3>".$row['title']."</h3>".$row['description']."</td>";
    echo"</tr>";
}

回答1:

Here is a complete rewrite that implements mysqli as commented under the question. For security & ease of use, it uses a prepared statement with a bound parameter and bound results.

(Also notice, I've replaced the * wildcard in your SELECT. It is always good practice to only ask the database for exactly what you need.)

$db=new mysqli("localhost","username", "password","database");  // do this in your include
if($stmt=$db->prepare("SELECT `file`,`title`,`description` FROM `blog` WHERE `title` LIKE ?")){
    $search="{$_GET['title']}%";  // I assume this is passed with $_GET
    $stmt->bind_param("s",$search);
    $stmt->execute();
    $stmt->bind_result($file,$title,$description);
    while($stmt->fetch()){
        echo"<tr>";
            echo"<td><img src='uploads/{$file}' height='150px' width='200px'</td>";
            echo"<td><h3>{$title}</h3>{$description}</td>";
        echo"</tr>";
    }
    $stmt->close();
}

p.s. Typically table searches are done by using % on both sides of your LIKE value. Your search will only return results that "start with title". Please consider changing this in your code.

回答2:

Change the query like below:

$sql="select * from blog where title LIKE '".$title."%';

来源：https://stackoverflow.com/questions/43471890/select-rows-based-on-textarea-value

标签

php

mysql

select

sql-like