PHP File Handling – CRUD

Quick tips, how to work with basic filesystem in PHP.

• Create a File (implicitly creates file):
  $my_file = 'file.txt';
$handle = fopen($my_file, 'w') or die('Cannot open file: '.$my_file);
• Open a File (open file for writing (‘w’,’r’,’a’)):
  $my_file = 'file.txt';
$handle = fopen($my_file, 'w') or die('Cannot open file: '.$my_file);
• Read a File:
  $my_file = 'file.txt';
$handle = fopen($my_file, 'r');
$data = fread($handle,filesize($my_file));
• Write to a File:
  $my_file = 'file.txt';
$handle = fopen($my_file, 'w') or die('Cannot open file: '.$my_file);
$data = 'This is the data';
fwrite($handle, $data);
• Append to a File:
  $my_file = 'file.txt';
$handle = fopen($my_file, 'a') or die('Cannot open file: '.$my_file);
$data = 'New data line 1';
fwrite($handle, $data);
$new_data = "\n".'New data line 2';
fwrite($handle, $new_data);
• Close a File:
  $my_file = 'file.txt';
$handle = fopen($my_file, 'w') or die('Cannot open file: '.$my_file);
fclose($handle);
• Delete a File:
  $my_file = 'file.txt';
unlink($my_file);