PHP PDO fetch 模式各種參數(shù)的輸出結(jié)果一覽
更新時(shí)間:2015年01月07日 09:55:09 投稿:junjie
這篇文章主要介紹了PHP PDO fetch 模式各種參數(shù)的輸出結(jié)果一覽,本文目的是方便根據(jù)實(shí)際需求選擇不同的參數(shù),從而不用一個(gè)一個(gè)測(cè)試過(guò)去,需要的朋友可以參考下
PDO 的 fetch 模式功能實(shí)在是太方便了,但每次要產(chǎn)生想要的結(jié)果都要試太麻煩了,這里列出可能的組合。
復(fù)制代碼 代碼如下:
<?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' => '本周新片',
'method' => 'movie',
),
array(
'id' => '3',
'name' => '熱映中',
'method' => 'movie',
),
)
*/
$data = $dbAdapter->query("
SELECT name, method FROM category
")->fetchAll(PDO::FETCH_COLUMN);
//var_dump($data);
/*
array(
'HBO',
'本周新片',
'熱映中',
)
*/
$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' => '本周新片',
'method' => 'movie',
),
'3' => array(
'name' => '熱映中',
'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' => '熱映中',
),
)
*/
$data = $dbAdapter->query("
SELECT id, name, method FROM category
")->fetchAll(PDO::FETCH_UNIQUE | PDO::FETCH_COLUMN);
//var_dump($data);
/*
array(
'1' => 'HBO',
'2' => '本周新片',
'3' => '熱映中',
)
*/
$data = $dbAdapter->query("
SELECT method, name, id FROM category
")->fetchAll(PDO::FETCH_UNIQUE | PDO::FETCH_COLUMN);
//var_dump($data);
/*
array(
'service' => 'HBO',
'movie' => '熱映中',
)
*/
$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' => '本周新片'
),
array(
'id' => '3'
'name' => '熱映中'
),
)
)
*/
$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(
'本周新片'
'熱映中'
),
)
*/
$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 = '本周新片';
public $method = 'movie';
},
stdClass{
public $id = '3';
public $name = '熱映中';
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 = '本周新片';
public $method = 'movie';
},
Category_1{
public $id = '3';
public $name = '熱映中';
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 = '本周新片';
public $method = 'movie';
},
Category_2{
public $name = '熱映中';
public $method = 'movie';
},
)
*/
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