Class Phalcon\Db\Adapter\Pdo

extends Phalcon\Db\Adapter

implements Phalcon\Events\EventsAwareInterface

Phalcon\Db\Adapter\Pdo is the Phalcon\Db that internally uses PDO to connect to a database

<?php

 $connection = new Phalcon\Db\Adapter\Pdo\Mysql(array(
  'host' => '192.168.0.11',
  'username' => 'sigma',
  'password' => 'secret',
  'dbname' => 'blog',
  'port' => '3306',
 ));

Methods

public __construct (array $descriptor)

Constructor for Phalcon\Db\Adapter\Pdo

public boolean connect (array $descriptor)

This method is automatically called in Phalcon\Db\Adapter\Pdo constructor. Call it when you need to restore a database connection

public PDOStatement executePrepared (PDOStatement $statement, array $placeholders, array $dataTypes)

Executes a prepared statement binding

public Phalcon\Db\ResultInterface query (string $sqlStatement, array $bindParams, array $bindTypes)

Sends SQL statements to the database server returning the success state. Use this method only when the SQL statement sent to the server is returning rows

<?php

//Querying data

$resultset = $connection->query(“SELECT * FROM robots WHERE type=’mechanical’”); $resultset = $connection->query(“SELECT * FROM robots WHERE type=?”, array(“mechanical”));

public boolean execute (string $sqlStatement, unknown $bindParams, unknown $bindTypes)

Sends SQL statements to the database server returning the success state. Use this method only when the SQL statement sent to the server don’t return any row

<?php

//Inserting data
$success = $connection->execute("INSERT INTO robots VALUES (1, 'Astro Boy')");
$success = $connection->execute("INSERT INTO robots VALUES (?, ?)", array(1, 'Astro Boy'));

public int affectedRows ()

Returns the number of affected rows by the last INSERT/UPDATE/DELETE reported by the database system

<?php

$connection->query("DELETE FROM robots");
echo $connection->affectedRows(), ' were deleted';

public boolean close ()

Closes active connection returning success. Phalcon automatically closes and destroys active connections within Phalcon\Db\Pool

public string escapeIdentifier (string $identifier)

Escapes a column/table/schema name

public string escapeString (string $str)

Escapes a value to avoid SQL injections

public bindParams (unknown $sqlStatement, array $params)

Bind params to a SQL statement

public array convertBoundParams (string $sql, array $params)

Converts bound params such as :name: or ?1 into PDO bind params ?

public int lastInsertId (string $sequenceName)

Returns insert id for the auto_increment column inserted in the last SQL statement

public boolean begin ()

Starts a transaction in the connection

public boolean rollback ()

Rollbacks the active transaction in the connection

public boolean commit ()

Commits the active transaction in the connection

public boolean isUnderTransaction ()

Checks whether connection is under database transaction

public PDO getInternalHandler ()

Return internal PDO handler

public Phalcon\Db\Index [] describeIndexes (string $table, string $schema)

Lists table indexes

public Phalcon\Db\Reference [] describeReferences (string $table, string $schema)

Lists table references

public array tableOptions (string $tableName, string $schemaName)

Gets creation options from a table

public Phalcon\Db\RawValue getDefaultIdValue ()

Return the default identity value to insert in an identity column

public boolean supportSequences ()

Check whether the database system requires a sequence to produce auto-numeric values

public setEventsManager (Phalcon\Events\ManagerInterface $eventsManager) inherited from Phalcon\Db\Adapter

Sets the event manager

public Phalcon\Events\ManagerInterface getEventsManager () inherited from Phalcon\Db\Adapter

Returns the internal event manager

public array fetchOne (string $sqlQuery, int $fetchMode, array $bindParams, array $bindTypes) inherited from Phalcon\Db\Adapter

Returns the first row in a SQL query result

<?php

//Getting first robot
$robot = $connection->fecthOne("SELECT * FROM robots");
print_r($robot);

//Getting first robot with associative indexes only
$robot = $connection->fecthOne("SELECT * FROM robots", Phalcon\Db::FETCH_ASSOC);
print_r($robot);

public array fetchAll (string $sqlQuery, int $fetchMode, array $bindParams, array $bindTypes) inherited from Phalcon\Db\Adapter

Dumps the complete result of a query into an array

<?php

//Getting all robots
$robots = $connection->fetchAll("SELECT * FROM robots");
foreach($robots as $robot){
    print_r($robot);
}

//Getting all robots with associative indexes only
$robots = $connection->fetchAll("SELECT * FROM robots", Phalcon\Db::FETCH_ASSOC);
foreach($robots as $robot){
    print_r($robot);
}

public boolean insert (string $table, array $values, array $fields, array $dataTypes) inherited from Phalcon\Db\Adapter

Inserts data into a table using custom RBDM SQL syntax

<?php

 //Inserting a new robot
 $success = $connection->insert(
     "robots",
     array("Astro Boy", 1952),
     array("name", "year")
 );

 //Next SQL sentence is sent to the database system
 INSERT INTO `robots` (`name`, `year`) VALUES ("Astro boy", 1952);

public boolean update (string $table, array $fields, array $values, string $whereCondition, array $dataTypes) inherited from Phalcon\Db\Adapter

Updates data on a table using custom RBDM SQL syntax

<?php

 //Updating existing robot
 $success = $connection->update(
     "robots",
     array("name")
     array("New Astro Boy"),
     "id = 101"
 );

 //Next SQL sentence is sent to the database system
 UPDATE `robots` SET `name` = "Astro boy" WHERE id = 101

public boolean delete (string $table, string $whereCondition, array $placeholders, array $dataTypes) inherited from Phalcon\Db\Adapter

Deletes data from a table using custom RBDM SQL syntax

<?php

 //Deleting existing robot
 $success = $connection->delete(
     "robots",
     "id = 101"
 );

 //Next SQL sentence is generated
 DELETE FROM `robots` WHERE `id` = 101

public string getColumnList (array $columnList) inherited from Phalcon\Db\Adapter

Gets a list of columns

public string limit (string $sqlQuery, int $number) inherited from Phalcon\Db\Adapter

Appends a LIMIT clause to $sqlQuery argument

<?php

 $connection->limit("SELECT * FROM robots", 5);

public string tableExists (string $tableName, string $schemaName) inherited from Phalcon\Db\Adapter

Generates SQL checking for the existence of a schema.table

<?php

 $connection->tableExists("blog", "posts")

public string viewExists (string $viewName, string $schemaName) inherited from Phalcon\Db\Adapter

Generates SQL checking for the existence of a schema.view

<?php

 $connection->viewExists("active_users", "posts")

public string forUpdate (string $sqlQuery) inherited from Phalcon\Db\Adapter

Returns a SQL modified with a FOR UPDATE clause

public string sharedLock (string $sqlQuery) inherited from Phalcon\Db\Adapter

Returns a SQL modified with a LOCK IN SHARE MODE clause

public boolean createTable (string $tableName, string $schemaName, array $definition) inherited from Phalcon\Db\Adapter

Creates a table

public boolean dropTable (string $tableName, string $schemaName, boolean $ifExists) inherited from Phalcon\Db\Adapter

Drops a table from a schema/database

public boolean addColumn (string $tableName, string $schemaName, Phalcon\Db\ColumnInterface $column) inherited from Phalcon\Db\Adapter

Adds a column to a table

public boolean modifyColumn (string $tableName, string $schemaName, Phalcon\Db\ColumnInterface $column) inherited from Phalcon\Db\Adapter

Modifies a table column based on a definition

public boolean dropColumn (string $tableName, string $schemaName, string $columnName) inherited from Phalcon\Db\Adapter

Drops a column from a table

public boolean addIndex (string $tableName, string $schemaName, Phalcon\Db\IndexInterface $index) inherited from Phalcon\Db\Adapter

Adds an index to a table

public boolean dropIndex (string $tableName, string $schemaName, string $indexName) inherited from Phalcon\Db\Adapter

Drop an index from a table

public boolean addPrimaryKey (string $tableName, string $schemaName, Phalcon\Db\IndexInterface $index) inherited from Phalcon\Db\Adapter

Adds a primary key to a table

public boolean dropPrimaryKey (string $tableName, string $schemaName) inherited from Phalcon\Db\Adapter

Drops primary key from a table

public boolean true addForeignKey (string $tableName, string $schemaName, Phalcon\Db\ReferenceInterface $reference) inherited from Phalcon\Db\Adapter

Adds a foreign key to a table

public boolean true dropForeignKey (string $tableName, string $schemaName, string $referenceName) inherited from Phalcon\Db\Adapter

Drops a foreign key from a table

public string getColumnDefinition (Phalcon\Db\ColumnInterface $column) inherited from Phalcon\Db\Adapter

Returns the SQL column definition from a column

public array listTables (string $schemaName) inherited from Phalcon\Db\Adapter

List all tables on a database <code> print_r($connection->listTables(“blog”) ?>

public array getDescriptor () inherited from Phalcon\Db\Adapter

Return descriptor used to connect to the active database

public string getConnectionId () inherited from Phalcon\Db\Adapter

Gets the active connection unique identifier

public string getSQLStatement () inherited from Phalcon\Db\Adapter

Active SQL statement in the object

public string getRealSQLStatement () inherited from Phalcon\Db\Adapter

Active SQL statement in the object without replace bound paramters

public array getSQLVariables () inherited from Phalcon\Db\Adapter

Active SQL statement in the object

public array getSQLBindTypes () inherited from Phalcon\Db\Adapter

Active SQL statement in the object

public string getType () inherited from Phalcon\Db\Adapter

Returns type of database system the adapter is used for

public string getDialectType () inherited from Phalcon\Db\Adapter

Returns the name of the dialect used

public Phalcon\Db\DialectInterface getDialect () inherited from Phalcon\Db\Adapter

Returns internal dialect instance