- var_dump: documentation ( source)
<?php
$conn = new PDO('sqlite::memory:');
$conn->exec('CREATE TABLE php81_test (test_int INTEGER NOT NULL, test_decimal NUMERIC(10, 2) DEFAULT NULL, PRIMARY KEY(test_int))');
$conn->exec('INSERT INTO php81_test (test_int, test_decimal) VALUES (1, 1.55)');
$stmt = $conn->query('SELECT * FROM php81_test');
var_dump($stmt->fetch(PDO::FETCH_ASSOC));
$stmt = $conn->query('PRAGMA table_info(php81_test)');
var_dump($stmt->fetch(PDO::FETCH_ASSOC));