Test-REGEXP-Martin-LOAL

<?php
//source by Jakub Koláček
//http://www.jakol.cz

if(isset($_GET["odeslat"])){
  $id_dobre = false;
  $nazev_dobre = false;
  $cena_dobre = false;

  $id = trim(strtoupper($_GET["id"]));
  $nazev = trim($_GET["nazev"]);
  $cena = trim($_GET["cena"]);

  $pattern_id = "/X?[\d]{5}[\x20]*-[\x20]*[\d]{2}/";
  $pattern_nazev_jedno_slovo = "/^[\wěščřžýáíéťĚŠČŘŽÝÁÍÉŤ]{2,}$/";
  $pattern_nazev_dve_slova = "/^[\wěščřžýáíéťĚŠČŘŽÝÁÍÉŤ]{2,}[\x20][\wěščřžýáíéťĚŠČŘŽÝÁÍÉŤ]{2,}$/";
  $pattern_cena = "/[\d]+$/";
  $pattern_cena_skc = "/[\d]+[\x20][Kk]č/";

  if(preg_match($pattern_id, $id)){
    $id = str_replace(" ", "", $id);
    if(preg_match("/^[\d]{5}[\x20]*-[\x20]*[\d]{2}/", $id))
      $id = "X".$id;
    $id_dobre = true;
  }else{
    echo "Zajebaný ID<br />\n";
  }

  if(preg_match($pattern_nazev_jedno_slovo, $nazev)){
    $nazev = strtolower($nazev);
    $nazev = ucfirst($nazev);
    $nazev_dobre = true;
  }else if(preg_match($pattern_nazev_dve_slova, $nazev)){
    $nazev = strtolower($nazev);
    $nazev = ucfirst($nazev);
    $nazev = str_replace("  ", " ", $nazev);
    $nazev_dobre = true;
  }else{
    echo "Zajebaně najebanej název!<br />\n";
  }

  if(preg_match($pattern_cena, $cena)){
    $cena = $cena." Kč";
    $cena_dobre = true;
  }else if(preg_match($pattern_cena_skc, $cena)){
    $tmpcena = explode(" ", $cena);

    $cena = "";
    $cena = $tmpcena[0]." Kč";
    $cena_dobre = true;
  }else{
    echo "Ty kundo piš tu cenu správně!<br />\n";
  }
}
?>
<form method='GET' action='index.php'>
<table>
<tr><td>ID:</td><td><input type='text' name='id' /></td></tr>
<tr><td>Název:</td><td><input type='text' name='nazev' /></td></tr>
<tr><td>Cena:</td><td><input type='text' name='cena' /></td></tr>
<tr><td><input type='submit' name='odeslat' value='Odeslat' /></td></tr>
</table>
</form>
<?php
if(isset($_GET["odeslat"])){
  if($id_dobre)
    echo "ID: ".$id."<br />\n";
  if($nazev_dobre)
    echo "Název: ".$nazev."<br />\n";
  if($cena_dobre){
    echo "Cena bez DPH: ".$cena."<br />\n";
    echo "Cena s DPH: ".($cena*1.2)." Kč<br />\n";
  }
}
?>