PHP simple method for reading and writing files _ PHP Tutorial

PHP is a simple method for reading and writing files. Read the file content and write the variable $ contents :? Php?fpfopen(file.txt,r=%%contentsfread(%fp,filesize(file.txt); fclose ($ fp );? Write the content of the variable $ contents to the File :?

Read the file content and write the variable $ contents:

Write the content of the variable $ contents to the file:

Of course, we can also use file_get_contents and file_put_contents to read and write files.

Why :? Php program fp1_fopen('file.txt ', 'r'); program contents+fread(program fp,filesize('file.txt'); fclose ($ fp );? Write the variable $ contents to the File :?...