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php 怎么接收前端传来的json数据

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Jun 13, 2016 am 11:26 AM

datajsonnbspposttype

php 如何接收前端传来的json数据
前端用JQ 生成一个有字段名和值格式的键值对的JSON 格式的字串转码后提交给后台的PHP 处理
代码如下

<br />	json_data+="\"emp_id\":\""+emp_id+"\",\"action_type\":\""+action_type+"\"})"<br />	//	$("#emp_no_id").val(json_data);<br />		var json_data1=eval(json_data);<br />	//	var json_data1=json_data;<br /><br />//	$.each(json_data1,function(item,value){<br />//	 alert(item+value);<br />//	});<br />	$.ajax({<br />            type: "post",//使用post方法访问后台<br />            dataType: "text",//返回json格式的数据<br />	    url: "updata_emp.php", //要访问的后台地址<br />	    data:json_data1,<br />	    ontentType:'utf8',<br />	    async:false,<br />            success: function(msg){//msg为返回的数据，在这里做数据绑定<br />		    var arr=msg;<br />		    alert(msg);<br />	    }<br />       });<br />

后台使用PHP 接受

<br />require '.\require\db_set.php';<br />if (!empty($GLOBALS['HTTP_RAW_POST_DATA']))<br />{<br />    $command =  isset($GLOBALS['HTTP_RAW_POST_DATA']) ? $GLOBALS['HTTP_RAW_POST_DATA'] : file_get_contents("php://input");<br />    $j =json_decode( $command,true);//true,转化成数组<br />}<br /><br />echo $j ;<br /><br />

现在的情况是接收到的内容是一个字串, 无法用json_decode 转成数组

应该如何处理

PHP JSON 前端

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