php string cut after character code example

Example 1: php remove everything after character

$fullpath = 'folderName/file.ext';
$folder = substr($fullpath, 0, strpos($fullpath, '/'));
echo $folder;
// Output => folderName

Example 2: php remove after character

$s = 'Posted On April 6th By Some Dude';
echo strstr($s, 'By', true); // Posted On April 6th

Example 3: get substring after character php

<?php
$my_url = 'http://www.example.com/5478631';
echo substr($my_url, strrpos($my_url, '/' )+1)."\n";
?>
  // print: 5478631