Description:
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If passing a stream as a parameter of PDOStatement::bindParam it is transformed to a string which contains the stream contents.

For example this prevents reusing the stream handle to close it properly or to truncate or change the file contents.

Test script:
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<?php

$pdo = new PDO('sqlite::memory:');
$pdo->exec('CREATE TABLE test (a INTEGER, b BLOB);');

$fp = tmpfile();
fwrite($fp, 'Random stuff!');
fseek($fp, 0);

$stmt = $pdo->prepare('INSERT INTO test VALUES (?, ?);');
$stmt->bindValue(1, 42);
$stmt->bindParam(2, $fp, PDO::PARAM_LOB);

$stmt->execute();

var_dump(gettype($fp));

Expected result:
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resource

Actual result:
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string