PHP PDOStatement::nextRowset() Method: Usage and Examples

Advances to another result set produced by a multi-result statement or stored procedure.

The objective is to understand the behavior and operational limits, not only the method name.

What It Does

Advances to another result set produced by a multi-result statement or stored procedure.

Syntax and Return Value

PDOStatement::nextRowset(): mixed

The return value and exceptional cases depend on the call described here: Support depends on the PDO driver; always close cursors after consuming available sets.

Example 1: Basic Use

The statement has a real query and result set; database-specific metadata and statement options may be unsupported.

<?php
$pdo = new PDO('sqlite::memory:', null, null, [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]);
$pdo->exec('CREATE TABLE products (id INTEGER PRIMARY KEY, name TEXT NOT NULL, price INTEGER NOT NULL, active INTEGER)');
$pdo->exec("INSERT INTO products (id,name,price,active) VALUES (1,'Desk',120,1),(2,'Lamp',35,1),(3,'Chair',85,0)");
$stmt = $pdo->query("SELECT name FROM products LIMIT 1");
echo $stmt->nextRowset() ? "another result set" : "one result set only";

Example 2: A Second Scenario

The statement has a real query and result set; database-specific metadata and statement options may be unsupported. This additional check distinguishes the method's result from connection or statement state.

<?php
$pdo = new PDO('sqlite::memory:', null, null, [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]);
$pdo->exec('CREATE TABLE products (id INTEGER PRIMARY KEY, name TEXT NOT NULL, price INTEGER NOT NULL, active INTEGER)');
$pdo->exec("INSERT INTO products (id,name,price,active) VALUES (1,'Desk',120,1),(2,'Lamp',35,1),(3,'Chair',85,0)");
$stmt = $pdo->query("SELECT name FROM products LIMIT 1");
echo $stmt->nextRowset() ? "another result set" : "one result set only";
echo $stmt->nextRowset() ? "additional" : "no more result sets";

Example 3: Practical Checks

The statement has a real query and result set; database-specific metadata and statement options may be unsupported. This additional check distinguishes the method's result from connection or statement state.

<?php
$pdo = new PDO('sqlite::memory:', null, null, [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]);
$pdo->exec('CREATE TABLE products (id INTEGER PRIMARY KEY, name TEXT NOT NULL, price INTEGER NOT NULL, active INTEGER)');
$pdo->exec("INSERT INTO products (id,name,price,active) VALUES (1,'Desk',120,1),(2,'Lamp',35,1),(3,'Chair',85,0)");
$stmt = $pdo->query("SELECT name FROM products LIMIT 1");
echo $stmt->nextRowset() ? "another result set" : "one result set only";
echo "First query has " . $stmt->columnCount() . " column(s)";

Important Behavior and Edge Cases

Support depends on the PDO driver; always close cursors after consuming available sets.

For production use, also account for error handling, data validation, resource limits and environment-specific driver behavior.

Comparison with Related Approaches

Common Beginner Mistakes

Key Takeaways

• Advances to another result set produced by a multi-result statement or stored procedure.
• Support depends on the PDO driver; always close cursors after consuming available sets.
• fetch advances within the current result set.

Choose this API or pattern when its exact semantics match your task, and verify the result against the database driver and runtime used by your application.