一、json_encode()
- 将PHP的数据结构转换成JOSN
- 代码1
<?php$arr = array ('a'=>1,'b'=>2,'c'=>3,'d'=>4,'e'=>5);
echo json_encode($arr);?>
- 结果
{"a":1,"b":2,"c":3,"d":4,"e":5}
- 代码2
$obj->body = 'another post';
$obj->id = 21;
$obj->approved = true;
$obj->favorite_count = 1;
$obj->status = NULL;
echo json_encode($obj);
- 结果
{
"body":"another post",
"id":21,
"approved":true,
"favorite_count":1,
"status":null
}
二、json_decode()
-
将json文本转换为相应的PHP数据结构
- 代码1
$json = '{"foo": 12345}';
$obj = json_decode($json);
print $obj->{'foo'}; // 12345
- 代码2
$json = '{"a":1,"b":2,"c":3,"d":4,"e":5}';
var_dump(json_decode($json));
- 结果
object(stdClass)#1 (5) {
["a"] => int(1)
["b"] => int(2)
["c"] => int(3)
["d"] => int(4)
["e"] => int(5)
}
-
如果想要强制生成PHP关联数组，json_decode()需要加一个参数true：
- 代码
$json = '{"a":1,"b":2,"c":3,"d":4,"e":5}';
var_dump(json_decode($json,true));
- 结果
array(5) { ["a"] => int(1)
["b"] => int(2)
["c"] => int(3)
["d"] => int(4)
["e"] => int(5)}
