PHP Filing

PHP Filing

• 1.
  PHP Filing Instructor:Nisa Soomro
• 2.
  Outlines • Filemanipulation using PHP • Basic protocols • Cookies and Sessions
• 3.
  Introduction • Manipulatingfiles is a basic necessity for serious programmers and PHP gives you a great deal of tools for creating, uploading, and editing files. • This is one of the most fundamental subjects of server side programming in general. Files are used in web applications of all sizes.
• 4.
  Creating a File • In PHP the fopen function is used to open files. However, it can also create a file if it does not find the file specified in the function call. So if you use fopen on a file that does not exist, it will create it, given that you open the file for writing or appending. $ourFileName = "testFile.txt"; $ourFileHandle = fopen($ourFileName, 'w') or die("can't open file"); fclose($ourFileHandle);
• 5.
  File Operations Mode
• 6.
  Opening a File • The fopen() function is used to open files in PHP. <?php $file = fopen("welcome.txt", "r") or exit("Unable to open file!"); fclose($file);
• 7.
  Reading From aFile • The fgets() function is used to read a single line from a file. <?php $file = fopen("welcome.txt", "r") or exit("Unable to open file!"); while(!feof($file)) { echo fgets($file). "<br>"; } fclose($file);
• 8.
  Writing to aFile • We can use php to write to a text file. The fwrite function allows data to be written to any type of file. $myFile = "testFile.txt"; $fh = fopen($myFile, 'w') or die("can't open file"); $stringData = “Hello 13BS(CS)"; fwrite($fh, $stringData); fclose($fh);
• 9.
  Removing File •In PHP you delete files by calling the unlink function. $myFile = "testFile.txt"; unlink($myFile);
• 10.
  Appending Data $myFile= "testFile.txt"; $fh = fopen($myFile, 'a') or die("can't open file"); $stringData = "New Stuff 1n"; fwrite($fh, $stringData); $stringData = "New Stuff 2n"; fwrite($fh, $stringData); fclose($fh);