PHP PDO Fetch mode output of various parameters at a glance, pdofetch_php tutorial

PHP PDO Fetch mode output list of various parameters, Pdofetch

The Fetch mode feature of PDO is very convenient, but it is too cumbersome to produce the desired results each time, here is a list of possible combinations.
Copy CodeThe code is as follows:
<?php
$dbAdapter = new PDO ("Mysql:host=localhost;dbname=test", "root", "1234");
$dbAdapter->exec ("SET NAMES ' UTF8 ';");

$data = $dbAdapter->query ("
SELECT ID, name, method from category
")->fetchall (PDO::FETCH_ASSOC);

Var_dump ($data);
/*
Array
Array
' id ' = ' 1 ',
' Name ' = ' HBO ',
' Method ' = ' service ',
),
Array
' id ' = ' 2 ',
' Name ' = ' new film of the Week ',
' Method ' = ' movie ',
),
Array
' id ' = ' 3 ',
' Name ' = ' Hot in the mirror ',
' Method ' = ' movie ',
),
)
*/



$data = $dbAdapter->query ("
SELECT name, method from category
")->fetchall (Pdo::fetch_column);

Var_dump ($data);
/*
Array
' HBO ',
' New film of the Week ',
' In the heat of the image ',
)
*/



$data = $dbAdapter->query ("
SELECT ID, name, method from category
")->fetchall (Pdo::fetch_unique | PDO::FETCH_ASSOC);

Var_dump ($data);
/*
Array
' 1 ' = = Array (
' Name ' = ' HBO ',
' Method ' = ' service ',
),
' 2 ' = = Array (
' Name ' = ' new film of the Week ',
' Method ' = ' movie ',
),
' 3 ' = = Array (
' Name ' = ' Hot in the mirror ',
' Method ' = ' movie ',
),
)
*/



$data = $dbAdapter->query ("
SELECT method, ID, name from category
")->fetchall (Pdo::fetch_unique | PDO::FETCH_ASSOC);

Var_dump ($data);
/*
Array
' Service ' = = Array (
' id ' = ' 1 ',
' Name ' = ' HBO ',
),
' movie ' = = Array (
' id ' = ' 3 ',
' Name ' = ' Hot in the mirror ',
),
)
*/



$data = $dbAdapter->query ("
SELECT ID, name, method from category
")->fetchall (Pdo::fetch_unique | Pdo::fetch_column);

Var_dump ($data);
/*
Array
' 1 ' = ' HBO ',
' 2 ' = ' new film of the Week ',
' 3 ' = ' hot in ',
)
*/



$data = $dbAdapter->query ("
SELECT method, name, ID from category
")->fetchall (Pdo::fetch_unique | Pdo::fetch_column);

Var_dump ($data);
/*
Array
' Service ' = ' HBO ',
' Movie ' = ' Hot in ',
)
*/




$data = $dbAdapter->query ("
SELECT method, ID, name from category
")->fetchall (Pdo::fetch_assoc | Pdo::fetch_group);

Var_dump ($data);
/*
Array
' Service ' = = Array (
Array
' id ' = ' 1 '
' Name ' = ' HBO '
),
)
' movie ' = = Array (
Array
' id ' = ' 2 '
' Name ' = ' new film of the Week '
),
Array
' id ' = ' 3 '
' Name ' = ' Hot in the mirror '
),
)
)
*/




$data = $dbAdapter->query ("
SELECT method, name, ID from category
")->fetchall (Pdo::fetch_group | Pdo::fetch_column);

Var_dump ($data);
/*
Array
' Service ' = = Array (
' HBO '
),
' movie ' = = Array (
' New film of the Week '
' Hot reflection '
),
)
*/





$data = $dbAdapter->query ("
SELECT ID, name, method from category
")->fetchall (Pdo::fetch_obj);

Var_dump ($data);
/*
Array
stdclass{
Public $id = ' 1 ';
Public $name = ' HBO ';
Public $method = ' service ';
},
stdclass{
Public $id = ' 2 ';
Public $name = ' new film of the Week ';
Public $method = ' movie ';
},
stdclass{
Public $id = ' 3 ';
Public $name = ' hot map ';
Public $method = ' movie ';
},
)
*/







Class Category_1 {}

$data = $dbAdapter->query ("
SELECT ID, name, method from category
")->fetchall (Pdo::fetch_class | Pdo::fetch_props_late, "category_1");

Var_dump ($data);
/*
Array
category_1{
Public $id = ' 1 ';
Public $name = ' HBO ';
Public $method = ' service ';
},
category_1{
Public $id = ' 2 ';
Public $name = ' new film of the Week ';
Public $method = ' movie ';
},
category_1{
Public $id = ' 3 ';
Public $name = ' hot map ';
Public $method = ' movie ';
},
),
*/





Class Category_2 {
Public $name;
Public $method;

Public Function __construct () {}
Public Function __set ($name, $value) {}
}

$data = $dbAdapter->query ("
SELECT ID, name, method from category
")->fetchall (Pdo::fetch_class | Pdo::fetch_props_late, "category_2");

Var_dump ($data);
/*
Array
category_2{
Public $name = ' HBO ';
Public $method = ' service ';
},
category_2{
Public $name = ' new film of the Week ';
Public $method = ' movie ';
},
category_2{
Public $name = ' hot map ';
Public $method = ' movie ';
},
)
*/

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