<?php
function parseHttpAcceptLanguage($str=NULL) {
    // getting http instruction if not provided
    $str=$str?$str:$_SERVER['HTTP_ACCEPT_LANGUAGE'];
    // exploding accepted languages
    $langs=explode(',',$str);
    // creating output list
    $accepted=array();
    foreach ($langs as $lang) {
        // parsing language preference instructions
        // 2_digit_code[-longer_code][;q=coefficient]
        ereg('([a-z]{1,2})(-([a-z0-9]+))?(;q=([0-9\.]+))?',$lang,$found);
        // 2 digit lang code
        $code=$found[1];
        // lang code complement
        $morecode=$found[3];
        // full lang code
        $fullcode=$morecode?$code.'-'.$morecode:$code;
        // coefficient
        $coef=sprintf('%3.1f',$found[5]?$found[5]:'1');
        // for sorting by coefficient
        $key=$coef.'-'.$code;
        // adding
        $accepted[$key]=array('code'=>$code,'coef'=>$coef,'morecode'=>$morecode,'fullcode'=>$fullcode);
    }
    // sorting the list by coefficient desc
    krsort($accepted);
    return $accepted;
}

class SomeClass {

  public function __init() {
    # do something
    throw new Exception('pipo');
  }

  public static function pipo($var) {
    return $var + 12;
  }
}

SomeClass::pipo(12);
?>