php get extension from filename code example

Example 1: php get file extension from filename

$ext = pathinfo($filename, PATHINFO_EXTENSION);

Example 2: get image extension in php

//get image extension of uploaded file in php
$imagetype = $_FILES['image']['name'];
$ext = pathinfo($imagetype, PATHINFO_EXTENSION);// get file extension

Example 3: php get filename without extension

// Here is a quick way of fetching only the filename (without extension) regardless of what suffix the file has.

// your file
$file = 'image.jpg';
$info = pathinfo($file);
// Before PHP 5.2
$file_name =  basename($file, '.'.$info['extension']);
// After PHP 5.2
$file_name =  $info['filename'];

Example 4: filename php

echo "1) ".basename("/etc/sudoers.d", ".d").PHP_EOL;//sudoers
echo "2) ".basename("/etc/sudoers.d").PHP_EOL;//sudoers.d
echo "3) ".basename("/etc/passwd").PHP_EOL;//passwd
echo "4) ".basename("/etc/").PHP_EOL;//etc
echo "5) ".basename(".").PHP_EOL;//.
echo "6) ".basename("/");//