initialize(ExecutionContextInterface $context)

Initializes the constraint validator.

Parameters

ExecutionContextInterface

$context

The current validation context

protected string formatTypeOf(mixed $value)

Returns a string representation of the type of the value.

This method should be used if you pass the type of a value as message parameter to a constraint violation. Note that such parameters should usually not be included in messages aimed at non-technical people.

Parameters

mixed

$value

The value to return the type of

Return Value

string

The type of the value

protected string formatValue(mixed $value, int $format = 0)

Returns a string representation of the value.

This method returns the equivalent PHP tokens for most scalar types (i.e. "false" for false, "1" for 1 etc.). Strings are always wrapped in double quotes ("). Objects, arrays and resources are formatted as "object", "array" and "resource". If the $format bitmask contains the PRETTY_DATE bit, then {@link \DateTime} objects will be formatted as RFC-3339 dates ("Y-m-d H:i:s").

Be careful when passing message parameters to a constraint violation that (may) contain objects, arrays or resources. These parameters should only be displayed for technical users. Non-technical users won't know what an "object", "array" or "resource" is and will be confused by the violation message.

Parameters

mixed	$value	The value to format as string
int	$format	A bitwise combination of the format constants in this class

Return Value

string

The string representation of the passed value

protected string formatValues(array $values, int $format = 0)

Returns a string representation of a list of values.

Each of the values is converted to a string using {@link formatValue()}. The values are then concatenated with commas.

Parameters

array	$values	A list of values
int	$format	A bitwise combination of the format constants in this class

Return Value

string

The string representation of the value list

See also

formatValue()

validate(mixed $value, Constraint $constraint)

Validates a credit card number with the Luhn algorithm.

Parameters

mixed	$value	The value that should be validated
Constraint	$constraint	The constraint for the validation

Exceptions

UnexpectedTypeException

when the given credit card number is no string