How can the use of var_dump() in PHP help troubleshoot issues related to SQL query construction and execution?

When troubleshooting SQL query construction and execution issues in PHP, using var_dump() can help by displaying the actual query being executed along with any variables or parameters being passed into it. This can help identify any syntax errors, incorrect data types, or missing values that may be causing the issue. 

$query = "SELECT * FROM users WHERE id = :id";
$stmt = $pdo->prepare($query);
$id = 1;
$stmt->bindParam(':id', $id, PDO::PARAM_INT);
$stmt->execute();

var_dump($stmt->queryString); // Display the actual query being executed

Keywords

var_dump PHP SQL query troubleshooting execution

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