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RowResult::getColumns — Get column metadata
Retrieve column metadata for columns present in the result set.
本函數還未編寫(xiě)文檔，僅有參數列表。
此函數沒(méi)有參數。
An array of FieldMetadata objects representing the columns in the result, or an empty array if the result set is empty.
示例 #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);
以上例程的輸出類(lèi)似于：
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
)
)