ColumnResult::__construct
(사용 가능한 버전 정보가 없으며 Git에만 있을 수 있음)
ColumnResult::__construct — ColumnResult constructor
설명
private mysql_xdevapi\ColumnResult::__construct()
문자 집합과 같은 열 메타데이터를 검색합니다. 이것은 RowResult::getColumns() 메소드에 의해 인스턴스화됩니다.
매개변수
이 함수에는 매개변수가 없습니다.
Examples
예제 #1 mysql_xdevapi\ColumnResult::__construct() 예제
<?php
$session = mysql_xdevapi\getSession("mysqlx://user:password@localhost");
$session->sql("DROP DATABASE IF EXISTS nonsense")->execute();
$session->sql("CREATE DATABASE nonsense")->execute();
$session->sql("CREATE TABLE nonsense.numbers (hello int, world float unsigned)")->execute();
$session->sql("INSERT INTO nonsense.numbers values (42, 42)")->execute();
$schema = $session->getSchema("nonsense");
$table = $schema->getTable("numbers");
$result1 = $table->select('hello','world')->execute();
// Returns an array of ColumnResult objects
$columns = $result1->getColumns();
foreach ($columns as $column) {
echo "\nColumn label " , $column->getColumnLabel();
echo " is type " , $column->getType();
echo " and is ", ($column->isNumberSigned() === 0) ? "Unsigned." : "Signed.";
}
// Alternatively
$result2 = $session->sql("SELECT * FROM nonsense.numbers")->execute();
// Returns an array of FieldMetadata objects
print_r($result2->getColumns());
위의 예는 다음과 유사한 결과를 출력합니다.
Column label hello is type 19 and is Signed. Column label world is type 4 and is Unsigned. Array ( [0] => mysql_xdevapi\FieldMetadata Object ( [type] => 1 [type_name] => SINT [name] => hello [original_name] => hello [table] => numbers [original_table] => numbers [schema] => nonsense [catalog] => def [collation] => 0 [fractional_digits] => 0 [length] => 11 [flags] => 0 [content_type] => 0 ) [1] => mysql_xdevapi\FieldMetadata Object ( [type] => 6 [type_name] => FLOAT [name] => world [original_name] => world [table] => numbers [original_table] => numbers [schema] => nonsense [catalog] => def [collation] => 0 [fractional_digits] => 31 [length] => 12 [flags] => 1 [content_type] => 0 ) )