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<?php
/* ***json編碼***
[1,2,5,7,8,"hello",[6,7,8],{"h":"hello"}]
{"h":"hello","w":"world",[1,2,3]}//h為key,hello為value,即k=>v對(duì),K與v用:隔開(kāi),多個(gè)k=>v對(duì)之間用逗號(hào)隔開(kāi)
*/
$arr=array(1,2,5,8,'hello','xuexi',array('h'=>'Hello','name'=>'xuexi'));
//print_r($arr);
//echo json_encode($arr);//json_encode()把數(shù)據(jù)轉(zhuǎn)換為Joson格式
//輸出:[1,2,5,8,"hello","xuexi",{"h":"Hello","name":"xuexi"}]
?>

<?php
$obj =array('h'=>'hello','w'=>'world',array(3,2,1));
//echo json_encode($obj);
//輸出:{"h":"hello","w":"world","0":[3,2,1]}
?>

<?php
//***json解碼***
$jsonstr = '{"h":"hello","w":"world","0":[3,2,1]}';
$obj = json_decode($jsonstr);
//print_r($obj);
//輸出:stdClass Object ( [h] => hello [w] => world [0] => Array ( [0] => 3 [1] => 2 [2] => 1 ) ) 
echo $obj->h;
//輸出:hello
?>