PHP如何读取json数据

[code]<?php
$json = '{"a":1,"b":2,"c":3,"d":4,"e":5}';

var_dump(json_decode($json));
var_dump(json_decode($json, true));

?>

　不加true参数的将会输出一个对象，加了true参数的会以数组形式输出

https://www.cnblogs.com/yolo-bean/p/7688961.html

[code]<?php
/*验证验证码是否正确*/
session_start();

$code = trim($_POST['code']);//接收前端传来的数据

$raw_success = array('code' => 1, 'msg' => '验证码正确');

$raw_fail = array('code' => 2, 'msg' => '验证码错误');

$res_success = json_encode($raw_success);
$res_fail = json_encode($raw_fail);

header('Content-Type:application/json');//这个类型声明非常关键

if ($code == $_SESSION["verfycode"]) {
echo $res_success;
} else {
echo $res_fail;
}
?>

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