Retrieve list of Bot user agents

get-bots.php

<?php
// Original script https://gist.github.com/mateusz/990b37e4f37db299de4e
// Changed to replace whitespace with regex \s

echo "map \$http_user_agent \$limit_bots {\n";
echo "    default \"\";\n\n";
$data = json_decode(file_get_contents("https://raw.githubusercontent.com/monperrus/crawler-user-agents/master/crawler-user-agents.json"), true);
$patterns = [];
foreach($data as $item) {
    $patterns[] = str_replace(' ', '\s', $item['pattern']);
    if(sizeof($patterns) > 8) {
        echo "    ~*(" . implode('|', $patterns) . ") \$http_user_agent;\n";
        $patterns = [];
    }
}
if($patterns) echo "  ~*(" . implode('|', $patterns) . ") \$http_user_agent;\n";
echo "}\n";