PHP Tutorial 8

File Handling: Listing files

<?php

$directory = 'files';

if( $handle = opendir($directory.'/')){

            echo 'Looking inside '.$directory.'<br>';

            while($file = readdir($handle)){

                        if($file!='.' && $file!='..')

                        echo '<a href="'.$directory.'/'.$file.'">'.$file.'</a><br>';

            }

}

?>

File Handling: Checking if a file exists

<?php

$filename = 'file.txt';

if(file_exists($filename)){

            echo 'File already exists.';

} else {

            $handle = fopen($filename, 'w');

            fwrite($handle, 'Nothing');

            fclose($handle);

}

?>

File Handling: Deleting and Renaming files

<?php

$filename = 'filetodelete.txt';

if(unlink($filename)){

            echo 'File <strong>'.$filename.'</strong> has been deleted.';

} else {

            echo 'File cannot be deleted.';

}

?>

<?php

$filename = 'filetorename.txt';

$rand = rand(10000, 99999);

if(rename($filename, $rand.'.txt')){

            echo 'File <strong>'.$filename.'</strong> has been renamed to <strong>'.$rand.'.txt</strong>';

} else {

            echo 'Error renaming';

}

?>

Uploading Files:

<?php

if(isset($_POST['submit'])){

$name = $_FILES['file']['name'];

$tmp_name = $_FILES['file']['tmp_name'];

$location = 'uploads/';   

   

if(isset($name)&&!empty($name)){

    if(move_uploaded_file($tmp_name, $location.$name)){

        echo 'Successfully the (<strong>'.$name.'</strong>) file uploaded!';

    }else{

        echo 'There was an error uploading the file.';

       

    }

        

  }else{

      echo 'Please choose a file';

  }

}

?>

<form action="newboston.php" method="POST" enctype="multipart/form-data">

   

    <input type="file" name="file" /><br/><br/>

    <input type="submit" name="submit" value="Upload"/>

</form>