Get File Extension Using PHP Source Code

Jackpott68 · Thursday at 7:05 AM

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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