PHP 7.2.25 Released

RowResult::getColumns

(No version information available, might only be in Git)

RowResult::getColumnsGet column metadata

说明

public mysql_xdevapi\RowResult::getColumns ( void ) : array

Retrieve column metadata for columns present in the result set.

Warning

本函数还未编写文档,仅有参数列表。

参数

此函数没有参数。

返回值

An array of FieldMetadata objects representing the columns in the result, or an empty array if the result set is empty.

范例

Example #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);

以上例程的输出类似于:

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
        )
)
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