Read the content of a file, using PHP

Read from a File

How do you read from a file using PHP?

.. this could be any filetypes that are flatfiles. Like PHP, CSS, HTML, XML, TXT, Javascripts, and many many more.

fopen have following options;

'r' (read only, file pointer at the beginning)
'r+' (read and write, file pointer at the beginning)
'w' (write only, file pointer at the beginning, zero length file, create it if it does not exist)
'w+' (read and write, file pointer at the beginning, zero length file,
create it if it does not exist)
'a' (write only, file pointer at the end, zero length file)
'a+' (read and write, file pointer at the end, zero length file)
'x' (write only, file pointer at the beginning, if exists, return FALSE)
'x+' (read and write, file pointer at the beginning, if exists, return FALSE)

HTML

<HTML><BODY> 
<TABLE> 
<FORM METHOD='POST' ACTION=''> 
<TR> 
<TD>Click here to read file: </TD> 
<TD><INPUT TYPE='submit' NAME='doit' VALUE='Read textfile'></TD> 
</TR></FORM> 
</TABLE> 
</BODY></HTML>

PHP

<?php
if (isset($_POST['doit']))  { 
    $viewme = 'file.txt'; 
    $file = fopen($viewme, 'r'); 
    $string = fread( $file, filesize($viewme) ); 

    echo "<TEXTAREA ROWS='24' COLS='80'>"; 
    echo $string; 
    echo "</TEXTAREA>"; 
    exit(); 
} 
?>