A script to create the symlinks for TYPO3 on a Hetzner webspace.

hetzner-symlink.php

<?php
//---------------------------------------------------------\\
// This script can be used on a webserver to create        \\
// the symlinks for a TYPO3 installation.                  \\
//                                                         \\
// This script works with the following folder structure:  \\
// Webspace-Root                                           \\
//  |- Website-Root                                        \\
//  |   |- hetzner-symlink.php                             \\
//  |- TYPO3-Source-Folder                                 \\
//  |   |- typo3                                           \\
//  |   |- vendor                                          \\
//  |   |- index.php                                       \\
//---------------------------------------------------------\\

//display the absolute path of the webspace.
$absolute_path = realpath(getcwd().'/../');
echo 'Working Directory: '.$absolute_path.'<br>';

//get the path to the folder which will be linked.
$version_folder = $absolute_path.'/typo3_src-9.5.26';

//check if the source folder is available.
if (is_dir($version_folder)) {
    echo 'Source Directory: '.$version_folder.'<br>';
    
    //check whether one of the symlink folders is a real folder (and not a symlink).
    if (is_link('typo3_src') === false || is_link('typo3') === false || is_link('vendor') === false) {

        //there is no vendor directory on  older versions of TYPO3.
        //just make sure the folder doesn't exists.
        if (file_exists('vendor')) {
            echo 'One of the folders typo3_src, typo3 or vendor is not a symbolic link.<br>';
            ShowSymlinkStatus();
            exit;
        }
    }

    //check whether one of the symlink files is a real file (and not a symlink).
    if (is_link('index.php') === false) {
        echo 'The file index.php is not a symbolic link.<br>';
        ShowSymlinkStatus();
        exit;
    }
    
    //remove the current TYPO3 folders and files.
    if (is_link('typo3_src')) unlink('typo3_src');
    if (is_link('typo3')) unlink('typo3');
    if (is_link('vendor')) unlink('vendor');
    if (is_link('index.php')) unlink('index.php');
    
    echo 'Removed current TYPO3 files and folders.<br>';

    //create the symlinks of TYPO3 files and folders.
    symlink($version_folder, 'typo3_src');
    symlink('typo3_src/typo3', 'typo3');
    symlink('typo3_src/vendor', 'vendor');
    symlink('typo3_src/index.php', 'index.php');
    
    //check whether all symlinks could be created.
    if (is_link('typo3_src') && is_link('typo3') && is_link('vendor') && is_link('index.php')) {
        echo 'Successfully created all symlinks.<br>';
    } else {
        echo 'One or more symlinks could not be created!<br>';
    }
} else {
    echo 'Source-Directory doesn\'t exists!<br>';
    echo 'No changes were made.';
}

function ShowSymlinkStatus() {
    echo 'typo3_src: '.(is_link('typo3_src') ? 'OK' : 'Not OK').'<br>';
    echo 'typo3: '.(is_link('typo3') ? 'OK' : 'Not OK').'<br>';
    echo 'vendor: '.(is_link('vendor') ? 'OK' : 'Not OK').'<br>';
    echo 'index.php: '.(is_link('index.php') ? 'OK' : 'Not OK').'<br>';
}