Sharing steps for writing files in php

In PHP, writing files generally requires the following steps: 1. First, determine the content to be written to the file $content = ‘Hello’;

2. Then, open the file (the system will automatically create this empty file)

//假设新建的文件叫file.txt，而且在上级目录下。w表示‘写文件’，
$fp下面要用到，表示指向某个打开的文件。
$fp = fopen(’../file.txt’, ‘w’);

3. Write the content string to the file //$fp tells the system the file to be written, and the written content is $content.

fwrite($fp, $content); //文件写入

4. Close the file fclose($fp);

Note: PHP5 provides a more convenient function file_put_contents, Therefore, the above four steps can be reduced to:

<?php
$content = ‘你好’; 
file_put_contents(’file.txt’,$content);