Php reads linux documents

For example, if php is used to read linux files, you can write a php file that reads the content of the linux file and displays the file. for example, the absolute path of my file linux is/etc/a/B/c. conf, I changed the file permission to 777, which I wrote as follows: & lt ;? & Nbsp; $ testfile = & quot;/etc/a/B/c. conf & quot; & nbsp; php reads linux files
Please help me write an example for php to read the content of the linux file and display it. for example, in my file linux absolute path/etc/a/B/c. conf, I changed the file permission to 777.
I wrote this:
$ Testfile = "/etc/a/B/c. conf ";
$ Fp = fopen ($ testfile, 'R + ');
$ Outputtext = fgets ($ testfile, filesize ($ testfile ));
Echo "$ testfile text content:". $ outputtext;
Fclose ($ fp)
?>

But there is no output. what is the problem? Is there a problem with writing the file path or is there any other reason?

------ Solution --------------------
File_get_contents () try this