A complete list of methods for operating JSON in PHP

This time I will bring you a complete list of methods for operating JSON in PHP. What are the precautions for operating JSON in PHP? The following is a practical case, let's take a look.

First define an array, then traverse the data table, put the corresponding data into the array, and finally convert the array through json_encode()

The function of the json_encode() function is to convert the numerical value Convert to JSON data storage format.

putjson.php:

<?php // 生成一个PHP数组
$data = array();
$data[0] = array(&#39;1&#39;,&#39;吴者然&#39;,&#39;onestopweb.cn&#39;);
$data[1] = array(&#39;2&#39;,&#39;何开&#39;,&#39;iteye.com&#39;);
// 把PHP数组转成JSON字符串
$json_string = json_encode($data);
// 写入文件
file_put_contents(&#39;test.json&#39;, $json_string);
?>

If there is a JSON file with the same name, it will be overwritten, if not, it will be created.

The generated or overwritten JSON is as follows:

Copy code The code is as follows:

[["1","\u811A\u672C\u4E4B\ u5BB6","www.jb51.net"],["2","\u7F16\u7A0B\u5F00\u53D1","jb51.net"]]

Then, read the data in the JSON file Get it into a PHP variable.

getjson.php：

<?php // 从文件中读取数据到PHP变量
$json_string = file_get_contents(&#39;test.json&#39;);
// 把JSON字符串转成PHP数组
$data = json_decode($json_string, true);
// 显示出来看看
var_dump($data);
echo &#39;<br><br>';
print_r($data);
echo '<br><br>';
echo '编号：'.$data[0][0].' 姓名：'.$data[0][1].' 网址：'.$data[0][2];
echo '<br>';
echo '编号：'.$data[1][0].' 姓名：'.$data[1][1].' 网址：'.$data[1][2];
?>

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Recommended reading:

Summary of jQuery operation json methods

Detailed explanation of JSON usage skills in JS

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