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RowResult::getColumns — Get column metadata
Retrieve column metadata for columns present in the result set.
この関数は、 現在のところ詳細な情報はありません。引数のリストのみが 記述されています。
この関数にはパラメータはありません。
An array of FieldMetadata objects representing the columns in the result, or an empty array if the result set is empty.
例1 mysql_xdevapi\RowResult::getColumns() example
<?php
$session = mysql_xdevapi\getSession("mysqlx://user:password@localhost");
$session->sql("DROP DATABASE addressbook")->execute();
$session->sql("CREATE DATABASE foo")->execute();
$session->sql("CREATE TABLE foo.test_table(x int)")->execute();
$session->sql("INSERT INTO addressbook.names values ('John', 42), ('Sam', 33)")->execute();
$sql = $session->sql("SELECT * from addressbook.names")->execute();
$cols = $sql->getColumns();
print_r($cols);
上の例の出力は、 たとえば以下のようになります。
Array ( [0] => mysql_xdevapi\FieldMetadata Object ( [type] => 7 [type_name] => BYTES [name] => name [original_name] => name [table] => names [original_table] => names [schema] => addressbook [catalog] => def [collation] => 255 [fractional_digits] => 0 [length] => 65535 [flags] => 0 [content_type] => 0 ) [1] => mysql_xdevapi\FieldMetadata Object ( [type] => 1 [type_name] => SINT [name] => age [original_name] => age [table] => names [original_table] => names [schema] => addressbook [catalog] => def [collation] => 0 [fractional_digits] => 0 [length] => 11 [flags] => 0 [content_type] => 0 ) )