SQLSTATE[3D000]:1046 - No database selected [closed] - php

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I was trying to execute a SQL CREATE command with php but I have this problem:
SQLSTATE[3D000]: Invalid catalog name: 1046 No database selected
I REALLY can't know where is the problem, please could you help me?
This is the script:
<?php
include 'connessione.php';
try {
$sql = 'CREATE TABLE joke (
id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
joketext TEXT,
jokedate DATE NOT NULL
) DEFAULT CHARACTER SET uft8 ENGINE=InnoDB';
$pdo->exec($sql);
} catch (PDOException $e){
$output = 'Errore nella creazione della tabella joke: ' . $e->getMessage();
include 'output.html.php';
exit();
}
$output = 'Tabella creata con successo.';
include 'output.html.php';
?>
And here the "connessione.php" file:
<?php
$host = 'host=localhost';
$mysql_user = 'root';
$mysql_password = '';
$database = 'php';
try {
$pdo = new PDO('mysql:$host;dbname=$database', $mysql_user, $mysql_password);
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch (PDOException $e) {
$output = 'Impossibile connettersi al database: ' . $e->getmessage();
include 'output.html.php';
exit();
}
?>
I checked the "connessione.php" file and the connection to database is right. Also, I checked user privileges and root has all privileges to "php" database... What's the problem?!

Answer 1

The problematic line is the connection itself:
$pdo = new PDO('mysql:$host;dbname=$database'
Remember that this is a string literal since they are wrapped with single quotes.
Change them you double quotes if you want the variables interpolated.
$pdo = new PDO("mysql:$host;dbname=$database", $mysql_user, $mysql_password);

Answer 2

It LOOKS like you're missing "host=" when you create the db handle. I'd also recommend searching SO or Google before asking questions - tons of hits for this issue: PHP PDO: Unable to connect, Invalid catalog name