Summary of PHP file operation methods

After we have learned the relative basics of PHP, we will learn how to operate PHP files. There are many ways to operate files. We need to open the PHP file, add, delete, modify, and check the PHP file. Finally, we need to close it. PHP file, let’s not talk too much nonsense, let’s take a look together! !

Write data in the data file:

 
After successful writing, you can see "OK" on the page 
Next read the data in the data file Data
How to read if there are multiple rows of data? 
Method 1 while: 
Method 2file_get_contents(): 
echo file_get_contents('data');
The above is all the contents of all operations on PHP files. For operations Students who are not familiar with PHP files should practice more! ! 
Sublimated knowledge:
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