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PDO::query

PHP function Edit on GitHub ✎

(PHP 5 >= 5.1.0, PHP 7, PHP 8, PECL pdo >= 0.2.0)

Prepares and executes an SQL statement without placeholders

Description

PDO::query(string $query, int|null $fetchMode = null): PDOStatement|false

PDO::query(string $query, int|null $fetchMode = PDO::FETCH_COLUMN, int $colno): PDOStatement|false

PDO::query(string $query, int|null $fetchMode = PDO::FETCH_CLASS, string $classname, array $constructorArgs): PDOStatement|false

PDO::query(string $query, int|null $fetchMode = PDO::FETCH_INTO, object $object): PDOStatement|false

PDO::query prepares and executes an SQL statement in a single function call, returning the statement as a PDOStatement object.

For a query that you need to issue multiple times, you will realize better performance if you prepare a PDOStatement object using PDO::prepare and issue the statement with multiple calls to PDOStatement::execute.

If you do not fetch all of the data in a result set before issuing your next call to PDO::query, your call may fail. Call PDOStatement::closeCursor to release the database resources associated with the PDOStatement object before issuing your next call to PDO::query.

Note

If the query contains placeholders, the statement must be prepared and executed separately using PDO::prepare and PDOStatement::execute methods.

Parameters

query

The SQL statement to prepare and execute.

If the SQL contains placeholders, PDO::prepare and PDOStatement::execute must be used instead. Alternatively, the SQL can be prepared manually before calling PDO::query, with the data properly formatted using PDO::quote if the driver supports it.

fetchMode

The default fetch mode for the returned PDOStatement. It must be one of the PDO::FETCH_* constants.

If this argument is passed to the function, the remaining arguments will be treated as though PDOStatement::setFetchMode was called on the resultant statement object. The subsequent arguments vary depending on the selected fetch mode.

Return Values

Returns a PDOStatement objectFalseforfailure.

Errors/Exceptions Errors

Examples

SQL with no placeholders can be executed using PDO::query

php

<?php
$sql = 'SELECT name, color, calories FROM fruit ORDER BY name';
foreach ($conn->query($sql) as $row) {
    print $row['name'] . "\t";
    print $row['color'] . "\t";
    print $row['calories'] . "\n";
}
?>

The above example will output:

output

apple   red     150
banana  yellow  250
kiwi    brown   75
lemon   yellow  25
orange  orange  300
pear    green   150
watermelon      pink    90