PHP PDOException Class

Represents an error generated by the PDO extension.

 class PDOException extends RuntimeException {
/* Propiedades */
public array $errorInfo;
protected string $code;
/* Propiedades heredadas */
protected string $message = "";
private string $string = "";
protected int $code;
protected string $file = "";
protected int $line;
private array $trace = [];
private ?Throwable $previous = null;
/* Métodos heredados */
final public Exception::getMessage(): string
final public Exception::getPrevious(): ?Throwable
final public Exception::getCode(): int
final public Exception::getFile(): string
final public Exception::getLine(): int
final public Exception::getTrace(): array
final public Exception::getTraceAsString(): string
public Exception::__toString(): string
private Exception::__clone(): void
}

Properties

$errorInfo – It corresponds to PDO::errorInfo() or PDOStatement::errorInfo().

$code – SQLSTATE error code. You can use the getCode method to access its value.

Methods

The methods that the PDOException class has are inherited from RuntimeException, and they are as follows:

getMessage

Gets the exception message in case we encounter an error or failure while using the PDO extension. This method returns the message associated with the PDO exception that has been thrown.

final public Exception::getMessage(): string

try {
    $dsn = 'mysql:host=localhost;dbname=nombre_basedatos';
    $usuario = 'usuario';
    $contrasena = 'contraseña';

    $conexion = new PDO($dsn, $usuario, $contrasena);

    // Aquí podrías realizar operaciones con la base de datos

} catch (PDOException $e) {
    // En caso de error, capturamos la excepción y mostramos el mensaje
    echo "Error de conexión: " . $e->getMessage();
}

getPrevious

Returns the previous Throwable (interface)

final public Exception::getPrevious(): ?Throwable

getCode

Gets the code of an exception.

 final public Exception::getCode(): int

getFile

Gets the place where the exception was created.

 final public Exception::getFile(): string

getLine

Gets the line where the exception was created.

 final public Exception::getLine(): int

Concept of Stack Trace in Exceptions:

The stack trace of an exception, also known as a call stack, is a record that shows the sequence of function calls that were executed up to the point where the exception occurred. It is a fundamental tool for debugging errors in software.

getTrace

We will obtain the stack trace as an array

 final public Exception::getTrace(): array

Return

This returned array would be an array of arrays containing information such as function, file, line, arguments, etc.

getTraceAsString

Gets the stack trace as a string

final public Exception::getTraceAsString(): string