Echo PDO query for debugging purposes

For debugging purposes, how d开发者_JAVA百科o I echo the query generated by PDO so I can see what it is about the execute?

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Use: $PDOStatement->queryString

Example code:

$usedParams = array(
  ':id' => 1
);

echo str_replace(
  array_keys($usedParams), $usedParams, $stmt->queryString
);