Get File Extension Using PHP Source Code

Submitted by razormist on Friday, February 28, 2020 - 09:28.

In this tutorial we will create a Get File Extension using PHP. This code will display the extension of a file when the user click the button. The code use PHP POST method to call a specific method that will display the file extension of a file using explode(). This is a user-friendly kind of program feel free to modify it. We will be using PHP as a scripting language and interpreter that is used primarily on any webserver including xamp, wamp, etc. It is being use to any famous websites and it has a modern technology that can easily be use by the next generation.

Getting Started:

First you have to download & install XAMPP or any local server that run PHP scripts. Here's the link for XAMPP server https://www.apachefriends.org/index.html. And, this is the link for the bootstrap that i used for the layout design https://getbootstrap.com/.

Creating The Interface

This is where we will create a simple form for our application. To create the forms simply copy and write it into your text editor, then save it as index.php.

<!DOCTYPE>
<html lang="en">
        <head>
                <meta charset="UTF-8" name="viewport" content="width=device-width, initial-scale=1"/>
                <link rel="stylesheet" type="text/css" href="css/bootstrap.css"/>
        </head>
<body>
        <nav class="navbar navbar-default">
                <div class="container-fluid">
                        <a class="navbar-brand" href="https://sourcecodester.com">Sourcecodester</a>
                </div>
        </nav>
        <div class="col-md-3"></div>
        <div class="col-md-6 well">
                <h3 class="text-primary">Get File Extension Using PHP Source Code</h3>
                <hr style="border-top:1px dotted #ccc;"/>
                <div class="col-md-4">
                        <form action="save_file.php" method="POST" enctype="multipart/form-data">
                                <div class="form-group">
                                        <label>Filename</label>
                                        <input type="file" name="file" class="form-control" required="required"/>
                                </div>
                                
                                
                                <center><button name="save" class="btn btn-primary"><span class="glyphicon glyphicon-save"></span> Save</button></center>
                        
                        </form>
                </div>
                <div class="col-md-8">
                <form method="POST" action="">
                        <button name="get" class="btn btn-primary"><span class="glyphicon glyphicon-arrow-down"></span> Get Extension</button>
                </form>
                <br /><br />
                <div class="table-responsive">
                        <table class="table table-bordered">
                                <thead class="alert-info">
                                        <tr>
                                                <td>Filename</td>
                                                <td>File Extension</td>
                                        </tr>
                                </thead>
                                <tbody>
                                        <?php include 'get_ex.php'?>
                                </tbody>
                        </table>
                </div>
                </div>
        </div>
</body>
</html>

Creating the Main Function

This code contains the main function of the application. This code will display the extension of a file when the button is clicked. To make this just copy and write these block of codes below inside the text editor, then save it as shown below. save_file.php

<?php
        if(ISSET($_POST['save'])){
                $filename = $_FILES['file']['name'];
                $filetype = $_FILES['file']['type'];
                $filetemp = $_FILES['file']['tmp_name'];
                $filesize = $_FILES['file']['size'];
                
                
                if($filesize > 500000){
                        echo "<script>alert('File too large to upload')</script>";
                        echo "<script>window.location = 'index.php'</script>";
                }else{
                        $location ="file/".$filename;
                        if(move_uploaded_file($filetemp, $location)){
                                echo "<script>alert('File uploaded')</script>";
                                echo "<script>window.location = 'index.php'</script>";
                        }
                }
                
        }
?>

get_ex.php

<?php
        if(!ISSET($_POST['get'])){
                $files = scandir('file/');
                foreach ($files as $value) {
                        if ($value != '.' && $value != '..'){
                
?>
<tr>
        <td><?php echo $value?></td>
        <td></td>
</tr>
<?php
                        }
                }   
        }else{
                $files = scandir('file/');
                foreach ($files as $value) {
                        if ($value != '.' && $value != '..'){
                                $file = explode('.', $value);
                                $end = end($file);
?>
<tr>
        <td><?php echo $file[0]?></td>
        <td><?php echo $end?></td>
</tr>
<?php
                        }
                }
        }
?>

There you have it we successfully created Get File Extension using PHP. I hope that this simple tutorial help you to what you are looking for. For more updates and tutorials just kindly visit this site. Enjoy Coding!

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