Sqlite3 search with PDO - php

Question

I can't get SQLite LIKE search to work with PDO. This works fine with
MySQL and MariaDB but I can't get this to work with SQLite3.
I have also tried with different examples from internet.
I'm using sqlite3 version 3.35.3 and version PHP 8.0.3 on Linux 5.9.
echo '<pre>';
$createTable = <<<EOT
CREATE TABLE users (
id INTEGER PRIMARY KEY,
name TEXT NOT NULL
);
INSERT INTO users(name) VALUES
('alpha'),
('beta'),
('gamma'),
('theta');
EOT;
if (!file_exists(__DIR__ . '/test.db'))
{
echo "#CREATING DB# <br>";
$pdo = new \PDO('sqlite:' . __DIR__ . '/test.db');
$pdo->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION);
$pdo->exec($createTable);
$term = 'et';
$sql = " SELECT * FROM users WHERE name LIKE :term ";
$stmt = $pdo->prepare($sql);
$prepare = [
'term' => "'%". $term ."%'"
];
echo getPdoCompiledSqlString($sql, $prepare) . '<br>';
if($stmt)
{
$stmt->execute($prepare);
//$stmt->debugDumpParams();
debugPdo($stmt);
echo "#FETCHALL# <br>";
print_r( $stmt->fetchAll() );
}
}
else
{
echo "#DELETING DB#";
unlink(__DIR__ . '/test.db');
}
function getPdoCompiledSqlString($sql, $params){
echo "#SQL STRING# <br>";
$keys = [];
foreach ($params as $key => $value){ if (is_string($key)) {$keys[] = '/:'.$key.'/';} else {$keys[] = '/[?]/';}}
return preg_replace($keys, $params, $sql, 1, $count);
}
function debugPdo(&$stmt){
echo "#DEBUG PDO OBJ# <br>";
$stmt->debugDumpParams();
}
echo '<pre>';

Answer 1

You don't need to quote the parameter :
'term' => "%". $term ."%"
Instead of
'term' => "'%". $term ."%'"
Because the parameter will automatically be quoted during execute()
$term = 'et';
$sql = " SELECT * FROM users WHERE name LIKE :term ";
$stmt = $pdo->prepare($sql);
$prepare = [
'term' => "%". $term ."%" //only the search string: `%et%`
];
$stmt->execute($prepare);
print_r($stmt->fetchAll());
Output:
Array
(
[0] => Array
(
[id] => 2
[0] => 2
[name] => beta
[1] => beta
)
[1] => Array
(
[id] => 4
[0] => 4
[name] => theta
[1] => theta
)
)