- var_dump: documentation ( source)
<?php
$dbh = new PDO("sqlite::memory:", "", "", [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]);
$dbh->exec("CREATE TABLE fruits (name TEXT, color TEXT)");
$dbh->exec("INSERT INTO fruits VALUES('banana', 'yellow')");
$sql = "SELECT * FROM fruits WHERE name = :name AND color = ?";
$sth = $dbh->prepare($sql);
$sth->execute(["banana", "yellow"]);
var_dump($sth->fetchAll());