Interface StatementInterface
Represents a database statement. Concrete implementations can either use PDOStatement or a native driver
Direct Implementers
Indirect Implementers
Constants summary
Magic properties summary
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$queryStringpublicstring
Method Summary
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bind() public
Binds a set of values to statement object with corresponding type -
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.
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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.
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columnCount() public
Returns the number of columns this statement's results will contain -
count() public
Statements can be passed as argument for count() to return the number for affected rows from last execution
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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
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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 -
fetch() public
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
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fetchAll() public
Returns an array with all rows resulting from executing this statement -
lastInsertId() public
Returns the latest primary inserted using this statement -
rowCount() public
Returns the number of rows affected by this SQL statement
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( string|integer $column , mixed $value , string $type = 'string' )
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|integer $column
- name or param position to be bound
- mixed $value
- The value to bind to variable in query
- string $type optional 'string'
- name of configured Type class
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
count() public ¶
count( )
Statements can be passed as argument for count() to return the number for affected rows from last execution
Returns
errorCode() public ¶
errorCode( )
Returns the error code for the last error that occurred when executing this statement
Returns
errorInfo() public ¶
errorInfo( )
Returns the error information for the last error that occurred when executing this statement
Returns
execute() public ¶
execute( array|null $params = null )
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 null
- list of values to be bound to query
Returns
true on success, false otherwise
fetch() public ¶
fetch( string $type = 'num' )
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 $type optional 'num'
- 'num' for positional columns, assoc for named columns
Returns
Result array containing columns and values or false if no results are left
fetchAll() public ¶
fetchAll( string $type = 'num' )
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 $type optional 'num'
- num for fetching columns as positional keys or assoc for column names as keys
Returns
list of all results from database for this statement
lastInsertId() public ¶
lastInsertId( string|null $table = null , string|null $column = null )
Returns the latest primary inserted using this statement
Parameters
- string|null $table optional null
- table name or sequence to get last insert value from
- string|null $column optional null
- the name of the column representing the primary key
Returns
rowCount() 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