What is the significance of the error message "SQLSTATE[HY093]: Invalid parameter number: parameter was not defined" in PHP?

The error message "SQLSTATE[HY093]: Invalid parameter number: parameter was not defined" in PHP typically occurs when executing a SQL query with placeholders, but the number of parameters provided does not match the number of placeholders in the query. To solve this issue, ensure that the number of parameters passed to the query matches the number of placeholders in the query string. 

// Example code snippet to fix the "SQLSTATE[HY093]: Invalid parameter number: parameter was not defined" error
$stmt = $pdo->prepare("SELECT * FROM table_name WHERE column1 = :param1 AND column2 = :param2");
$stmt->execute(['param1' => $value1, 'param2' => $value2]); // Make sure to pass the correct number of parameters

Keywords

SQLSTATE HY093 Invalid parameter number PHP Error message

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