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<?php /** MysqlDriverMicro */ |
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namespace Micro\Db\Drivers; |
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/** |
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* MySQL Driver class file. |
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* |
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* @author Oleg Lunegov <[email protected]> |
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* @link https://github.com/linpax/microphp-framework |
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* @copyright Copyright (c) 2013 Oleg Lunegov |
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* @license https://github.com/linpax/microphp-framework/blob/master/LICENSE |
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* @package Micro |
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* @subpackage Db\Drivers |
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* @version 1.0 |
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* @since 1.0 |
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*/ |
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class MysqlDriver extends Driver |
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{ |
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/** |
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* Set current database |
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* |
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* @access public |
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* |
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* @param string $dbName Database name |
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* |
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* @return boolean |
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*/ |
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public function switchDatabase($dbName) |
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{ |
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return $this->conn->exec("USE {$dbName};") !== false; |
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} |
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/** |
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* Info of database |
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* |
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* @access public |
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* @param string $dbName Database name |
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* @return array |
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*/ |
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public function infoDatabase($dbName) |
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{ |
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$sth = $this->conn->query("SHOW TABLE STATUS FROM {$dbName};"); |
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$result = []; |
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foreach ($sth->fetchAll() AS $row) { |
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$result[] = [ |
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'name' => $row['Name'], |
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'engine' => $row['Engine'], |
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'rows' => $row['Rows'], |
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'length' => $row['Avg_row_length'], |
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'increment' => $row['Auto_increment'], |
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'collation' => $row['Collation'] |
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]; |
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} |
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return $result; |
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} |
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/** |
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* List database names on this connection |
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* |
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* @access public |
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* @return array |
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*/ |
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public function listDatabases() |
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{ |
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$sql = 'SHOW DATABASES;'; |
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if ($this->getDriverType() === 'pgsql') { |
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$sql = 'SELECT datname FROM pg_database;'; |
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} |
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$sth = $this->conn->query($sql); |
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$result = []; |
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foreach ($sth->fetchAll() AS $row) { |
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$result[] = $row[0]; |
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} |
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return $result; |
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} |
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/** |
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* List tables in db |
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* |
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* @access public |
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* @return array |
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*/ |
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public function listTables() |
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{ |
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return $this->conn->query('SHOW TABLES;')->fetchAll(\PDO::FETCH_COLUMN, 0); |
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} |
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/** |
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* Create a new table |
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* |
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* @param string $name Table name |
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* @param array $elements Table elements |
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* @param string $params Table params |
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* |
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* @return int |
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*/ |
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public function createTable($name, array $elements = [], $params = '') |
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{ |
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return $this->conn->exec( |
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sprintf('SELECT TABLE IF NOT EXISTS `%s` (%s) %s;', $name, implode(', ', $elements), $params) |
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); |
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} |
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/** |
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* Get array fields into table |
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* |
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* @access public |
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* |
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* @param string $table Table name |
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* |
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* @return array |
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*/ |
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public function listFields($table) |
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{ |
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$sth = $this->conn->query("SHOW COLUMNS FROM {$table};"); |
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$result = []; |
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foreach ($sth->fetchAll(\PDO::FETCH_ASSOC) as $row) { |
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$result[] = [ |
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'field' => $row['Field'], |
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'type' => $row['Type'], |
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'null' => $row['Null'], |
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'key' => $row['Key'], |
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'default' => $row['Default'], |
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'extra' => $row['Extra'] |
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]; |
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} |
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return $result; |
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} |
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/** |
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* Insert row into table |
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* |
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* @access public |
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* |
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* @param string $table Table name |
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* @param array $line Line or lines to added |
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* @param bool $multi Is multi rows |
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* |
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* @return bool |
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*/ |
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public function insert($table, array $line = [], $multi = false) |
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{ |
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$fields = '`' . implode('`, `', array_keys($multi ? $line[0] : $line)) . '`'; |
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$values = ':'.implode(', :', array_keys($multi ? $line[0] : $line)); |
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$rows = $multi ? $line : [$line]; |
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$id = null; |
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if ($rows) { |
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$this->conn->beginTransaction(); |
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$dbh = null; |
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foreach ($rows AS $row) { |
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$dbh = $this->conn->prepare("INSERT INTO {$table} ({$fields}) VALUES ({$values});")->execute($row); |
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} |
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$id = $dbh ? $this->conn->lastInsertId() : false; |
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$this->conn->commit(); |
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} |
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return $id ?: false; |
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} |
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/** |
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* Update row in table |
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* |
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* @access public |
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* |
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* @param string $table Table name |
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* @param array $elements Elements to update |
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* @param string $conditions Conditions for search |
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* |
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* @return bool |
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*/ |
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View Code Duplication |
public function update($table, array $elements = [], $conditions = '') |
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{ |
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$keys = array_keys($elements); |
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if (0 === count($keys)) { |
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return false; |
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} |
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$valStr = []; |
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foreach ($keys as $key) { |
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$valStr[] = '`'.$key.'` = :'.$key; |
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} |
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$valStr = implode(',', $valStr); |
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if ($conditions) { |
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$conditions = 'WHERE '.$conditions; |
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} |
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return $this->conn->prepare("UPDATE {$table} SET {$valStr} {$conditions};")->execute($elements); |
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} |
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/** |
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* Exists element in the table by params |
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* |
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* @access public |
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* |
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* @param string $table Table name |
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* @param array $params Params array |
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* |
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* @return bool |
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*/ |
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View Code Duplication |
public function exists($table, array $params = []) |
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{ |
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$keys = []; |
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foreach ($params AS $key => $val) { |
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$keys[] = '`' . $key . '`="' . $val . '""'; |
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} |
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$sth = $this->conn->prepare('SELECT * FROM ' . $table . ' WHERE ' . implode(' AND ', $keys) . ' LIMIT 1;'); |
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/** @noinspection PdoApiUsageInspection */ |
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$sth->execute(); |
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return (bool)$sth->rowCount(); |
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} |
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} |
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This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)
or! empty(...)
instead.