Parse function doc block

index.php

<?php

$s = '
/**
 * Send request
 *
 * @throws \Exception
 * @param string $sEvent
 * @param \com\realexpayments\remote\sdk\domain\iRequest $oRequest
 * @param boolean $bReturnResponse
 * @return \com\realexpayments\remote\sdk\domain\iResponse|bool
 */
';

function parseFnDoc($s)
{
    preg_match_all("/\*\s.*/", $s, $matches);
    $params = [];
    $desc = '';

    foreach(reset($matches) as $match)
    {
        $match = trim(str_replace("*", "", $match));
        
        if ($match == null) {
            $match = "\n";
        }
        
        if ($match[0] == '@') {
            $parameters = explode(' ', $match);
            $name = $parameters[0];
            unset($parameters[0]);
            $type = $parameters[1];
            unset($parameters[1]);
            $extra = implode(' ', $parameters);
            $params[$name][] = [
                'type' => trim($type),
                'extra' => trim($extra)
            ];
            continue;
        }
        
        $desc .= $match;
    }
    
    $desc = trim($desc);
    
    return [
      'desc' => $desc,
      'params' => $params
    ];
}


$a = parseFnDoc($s);
print_r($a);

/*
Array
(
    [desc] => Send request
    [params] => Array
        (
            [@throws] => Array
                (
                    [0] => Array
                        (
                            [type] => \Exception
                            [extra] => 
                        )

                )

            [@param] => Array
                (
                    [0] => Array
                        (
                            [type] => string
                            [extra] => $sEvent
                        )

                    [1] => Array
                        (
                            [type] => \com\realexpayments\remote\sdk\domain\iRequest
                            [extra] => $oRequest
                        )

                    [2] => Array
                        (
                            [type] => boolean
                            [extra] => $bReturnResponse
                        )

                )

            [@return] => Array
                (
                    [0] => Array
                        (
                            [type] => \com\realexpayments\remote\sdk\domain\iResponse|bool
                            [extra] => 
                        )

                )

        )

)
*/