PHP基础之解析json数据

个人认为,不论是java还是php,解析json都比解析xml简单方便,下面记录使用php解析json数据的例子:

先来一个简单的,json数据只包含普通的键值对,没有数组的情况,下面是json.txt文件的内容:

{
	"name" : "zhangsan",
	"age" : 21, 
	"sex" : "male"
}
解析的php代码如下:

<?php
	$content = file_get_contents("json2.txt");
	$jsonObj = json_decode($content);
	$name = $jsonObj->name;
	$age = $jsonObj->age;
	$sex = $jsonObj->sex;
	echo "name = $name<br>";
	echo "age = $age<br>";
	echo "sex = $sex<br>";
?>
主要是用json_decode()函数,将json字符串解析成json对象,然后根据键取出值,在浏览器中输出为:

PHP基础之解析json数据_第1张图片
下面看json数据中带有数组的情况,json数据为:

{
    "name": "zhangsan",
    "age": 21,
    "sex": "male",
    "books": [
        {
            "name": "Chinese",
            "price": "50"
        },
        {
            "name": "History",
            "price": "60"
        },
        {
            "name": "Music",
            "price": "30"
        }
    ]
}
解析的php代码也不复杂:

<?php
	$content = file_get_contents("json2.txt");
	$jsonObj = json_decode($content);
	$name = $jsonObj->name;
	$age = $jsonObj->age;
	$sex = $jsonObj->sex;
	echo "name = $name<br>";
	echo "age = $age<br>";
	echo "sex = $sex<br>";
	$arr = $jsonObj->books;
	$count = count($arr);
	for($i = 0; $i < $count; $i++){
		$obj = $arr[$i];
		$bookName = $obj->name;
		$bookPrice = $obj->price;
		echo "book name = $bookName, book price = $bookPrice<br>";
	}
?>
在浏览器中的输出为:


跟之前解析xml比起来,感觉还是json数据容易解析得多。。。


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