Interface StatementInterface
Represents a database statement. Concrete implementations can either use PDOStatement or a native driver
Constants summary
-
stringFETCH_TYPE_ASSOC'assoc' -
stringFETCH_TYPE_NUM'num' -
stringFETCH_TYPE_OBJ'obj'
Method Summary
- bindValue() public
Assign a value to a positional or named variable in prepared query. If using positional variables you need to start with index one, if using named params then just use the name in any order.
- closeCursor() public
Closes a cursor in the database, freeing up any resources and memory allocated to it. In most cases you don't need to call this method, as it is automatically called after fetching all results from the result set.
- count() public
Statements can be passed as argument for count() to return the number for affected rows from last execution
- errorCode() public
Returns the error code for the last error that occurred when executing this statement
- errorInfo() public
Returns the error information for the last error that occurred when executing this statement
- execute() public
Executes the statement by sending the SQL query to the database. It can optionally take an array or arguments to be bound to the query variables. Please note that binding parameters from this method will not perform any custom type conversion as it would normally happen when calling
bindValue
Method Detail
bind() public
bind(array $params, array $types)
Binds a set of values to statement object with corresponding type
Parameters
-
array$params list of values to be bound
-
array$types list of types to be used, keys should match those in $params
bindValue() public
bindValue(mixed $column, mixed $value, mixed $type)
Assign a value to a positional or named variable in prepared query. If using positional variables you need to start with index one, if using named params then just use the name in any order.
It is not allowed to combine positional and named variables in the same statement
Examples:
$statement->bindValue(1, 'a title');
$statement->bindValue('active', true, 'boolean');
$statement->bindValue(5, new \DateTime(), 'date'); Parameters
-
string|int$column name or param position to be bound
-
mixed$value The value to bind to variable in query
-
string|int|null$type optional name of configured Type class, or PDO type constant.
closeCursor() public
closeCursor()
Closes a cursor in the database, freeing up any resources and memory allocated to it. In most cases you don't need to call this method, as it is automatically called after fetching all results from the result set.
columnCount() public
columnCount()
Returns the number of columns this statement's results will contain
Example:
$statement = $connection->prepare('SELECT id, title from articles');
$statement->execute();
echo $statement->columnCount(); // outputs 2 Returns
intcount() public
count()
Statements can be passed as argument for count() to return the number for affected rows from last execution
Returns
interrorCode() public
errorCode()
Returns the error code for the last error that occurred when executing this statement
Returns
int|stringerrorInfo() public
errorInfo()
Returns the error information for the last error that occurred when executing this statement
Returns
arrayexecute() public
execute(?array $params)
Executes the statement by sending the SQL query to the database. It can optionally take an array or arguments to be bound to the query variables. Please note that binding parameters from this method will not perform any custom type conversion as it would normally happen when calling bindValue
Parameters
-
array|null$params optional list of values to be bound to query
Returns
booltrue on success, false otherwise
fetch() public
fetch(mixed $type)
Returns the next row for the result set after executing this statement.
Rows can be fetched to contain columns as names or positions. If no rows are left in result set, this method will return false
Example:
$statement = $connection->prepare('SELECT id, title from articles');
$statement->execute();
print_r($statement->fetch('assoc')); // will show ['id' => 1, 'title' => 'a title'] Parameters
-
string|int$type optional 'num' for positional columns, assoc for named columns, or PDO fetch mode constants.
Returns
mixedResult array containing columns and values or false if no results are left
fetchAll() public
fetchAll(mixed $type)
Returns an array with all rows resulting from executing this statement
Example:
$statement = $connection->prepare('SELECT id, title from articles');
$statement->execute();
print_r($statement->fetchAll('assoc')); // will show [0 => ['id' => 1, 'title' => 'a title']] Parameters
-
string|int$type optional num for fetching columns as positional keys or assoc for column names as keys
Returns
array|falselist of all results from database for this statement or false on failure.
fetchColumn() public
fetchColumn(int $position)
Returns the value of the result at position.
Parameters
-
int$position The numeric position of the column to retrieve in the result
Returns
mixedReturns the specific value of the column designated at $position
lastInsertId() public
lastInsertId(?string $table, ?string $column)
Returns the latest primary inserted using this statement
Parameters
-
string|null$table optional table name or sequence to get last insert value from
-
string|null$column optional the name of the column representing the primary key
Returns
string|introwCount() public
rowCount()
Returns the number of rows affected by this SQL statement
Example:
$statement = $connection->prepare('SELECT id, title from articles');
$statement->execute();
print_r($statement->rowCount()); // will show 1 Returns
int
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https://api.cakephp.org/4.1/interface-Cake.Database.StatementInterface.html