Php getting started knowledge point 6 php file read/write operation code

Php getting started to learn how to read and write php files. you can use the following two functions to read files: fread, file_get_contents The code is as follows:
// Open the file
Using fpw.fopen('tmp.html ', 'r ');
// You can use the following two functions to read the file content: fread and file_get_contents.
$ Str = fread ($ fp, filesize('tmp.html '); // filesize is the file size.
Using content1_file_get_contents('tmp.html ');
// Write an object
Using newsjavasfopen('news.html ', 'w ');
Fwrite ($ news, $ content );
// Close the file stream
Fclose ($ fp );
Fclose ($ news );
Echo $ content;
?>