showing data from database using bindParam - php

Question

i want to try to showing my data from database using bindParam but i get some error.
Recoverable fatal error: Object of class PDOStatement could not be converted to string in C:\xampp\htdocs\piratefiles\search.php on line 15
here my code
$category = htmlentities($_GET['c']);
$query = htmlentities($_GET['q']);
$page = (isset($_GET['page'])) ? $_GET['page'] : 1;
$limit = 20;
$limit_start = ($page - 1) * $limit;
$query = $db->prepare ("SELECT * FROM `posting` WHERE 'category' = :category AND 'file_name' like :query ORDER BY date DESC LIMIT ".$limit_start.",".$limit);
$query->bindParam(":category", $category);
$query->bindParam(":query", $query);
$query->execute();

Answer 1

$query was the user input, then you assigned it as the PDOStatement, then your the passing it back to bindParam
Change the var name.
$category = htmlentities($_GET['c']);
$query = htmlentities($_GET['q']);
$page = (isset($_GET['page'])) ? $_GET['page'] : 1;
$limit = 20;
$limit_start = ($page - 1) * $limit;
$stmt = $db->prepare ("SELECT * FROM `posting` WHERE 'category' = :category AND 'file_name' like :query ORDER BY date DESC LIMIT ".$limit_start.",".$limit);
$stmt->bindParam(":category", $category);
$stmt->bindParam(":query", $query);
$stmt->execute();

Answer 2

Since im using LIKE so, need to make another variable.
$keyword1 = "%".$category."%";
$keyword2 = "%".$query1."%";
Here's Full code.
$category = htmlentities($_GET['c']);
$query1 = htmlentities($_GET['q']);
$page = (isset($_GET['page'])) ? $_GET['page'] : 1;
$limit = 20;
$limit_start = ($page - 1) * $limit;
$query = $db->prepare ("SELECT * FROM `posting` WHERE category LIKE :category AND file_name LIKE :query1 ORDER BY date DESC LIMIT ".$limit_start.",".$limit);
$keyword1 = "%".$category."%";
$keyword2 = "%".$query1."%";
$query->bindParam(":category", $keyword1);
$query->bindParam(":query1", $keyword2);
$query->execute();