Constraint

Less than 1 minute

Methods

Retrieves a list of constraints for a given table or all tables in the schema.

public listConstraints(NULL $table, NULL $type, boolean $invertType = false, false $): void

Parameter	Type	Description
`$table`	`NULL`	The name of the table. If null, constraints for all tables in the schema will be retrieved.
`$type`	`NULL`	The type of constraints to retrieve. If null, all types of constraints will be retrieved.
`$invertType`	`boolean`	Whether to invert the constraint type filter. If true, constraints of types other than the specified type will be retrieved.
`$`	`false`

public addConstraint(string $constraintName, array $info): bool

Parameter	Type	Description
`$constraintName`	`string`
`$info`	`array`

public dropConstraint(string $constraintName, string $tableName, bool $ifExists = false, bool $cascade = false): bool