Add function when losing focus or save

Add function when losing focus or save

I would like to add this function to validate the ID or Ruc a person but previously did it with javascript, but I get error Phalcon and honestly I can not think where to put it. I would like to put it when saving or when you lose focus if possible

<?php
function validarCI($strCedula)
{
$suma = 0;
   $strOriginal = $strCedula;
$intProvincia = substr($strCedula,0,2);
   $intTercero = $strCedula[2];
$intUltimo = $strCedula[9];
if (! settype($strCedula,"float")) return FALSE;
if ((int) $intProvincia < 1 || (int) $intProvincia > 23) return FALSE;
if ((int) $intTercero == 7 || (int) $intTercero == <img src="/modules/smileys/packs/example/cool.png" title="Cool"      alt="Cool" /> return FALSE;
   for($indice = 0; $indice < 9; $indice++) {
     //echo $strOriginal[$indice],'</br>';
 switch($indice) {
    case 0:
    case 2:
    case 4:
    case 6:
    case 8:
       $arrProducto[$indice] = $strOriginal[$indice] * 2;
       if ($arrProducto[$indice] >= 10) $arrProducto[$indice] -= 9;
       //echo $arrProducto[$indice],'</br>';
       break;
    case 1:
    case 3:
    case 5:
    case 7:
       $arrProducto[$indice] = $strOriginal[$indice] * 1;
       if ($arrProducto[$indice] >= 10) $arrProducto[$indice] -= 9;
       //echo $arrProducto[$indice],'</br>';
       break;
 }   }
foreach($arrProducto as $indice => $producto) $suma += $producto;
$residuo = $suma % 10;
$intVerificador = $residuo==0 ? 0: 10 - $residuo;
return ($intVerificador == $intUltimo? TRUE: FALSE);    }

function validarRUC($strRUC){
if (strlen($strRUC) != 13) return FALSE;
$suma = 0;
$strOriginal = $strRUC;
$intProvincia = substr($strRUC,0,2);
$intTercero = $strRUC[2];
if (! settype($strRUC,"float")) return FALSE;
if ((int) $intProvincia < 1 || (int) $intProvincia > 23) return FALSE;
if ((int) $intTercero != 6 && (int) $intTercero != 9) {
   if (substr($strRUC,10,3) == '001') return validarCI(substr($strRUC,0,10));
      return FALSE;
}
if ((int) $intTercero == 6) {
  $intUltimo = $strOriginal[8];
  for($indice = 0; $indice < 9; $indice++) {
     //echo $strOriginal[$indice],'</br>';
     switch($indice) {
        case 0:
           $arrProducto[$indice] = $strOriginal[$indice] * 3;
           break;
        case 1:
           $arrProducto[$indice] = $strOriginal[$indice] * 2;
           break;
        case 2:
           $arrProducto[$indice] = $strOriginal[$indice] * 7;
           break;
        case 3:
           $arrProducto[$indice] = $strOriginal[$indice] * 6;
           break;
        case 4:
           $arrProducto[$indice] = $strOriginal[$indice] * 5;
           break;
        case 5:
           $arrProducto[$indice] = $strOriginal[$indice] * 4;
           break;
        case 6:
           $arrProducto[$indice] = $strOriginal[$indice] * 3;
           break;
        case 7:
           $arrProducto[$indice] = $strOriginal[$indice] * 2;
           break;
        case 8:
           $arrProducto[$indice] = 0;
           break;
     }
  }
}
else {
  $intUltimo = $strOriginal[9];
  for($indice = 0; $indice < 9; $indice++) {
     //echo $strOriginal[$indice],'</br>';
     switch($indice) {
        case 0:
           $arrProducto[$indice] = $strOriginal[$indice] * 4;
           break;
        case 1:
           $arrProducto[$indice] = $strOriginal[$indice] * 3;
           break;
        case 2:
           $arrProducto[$indice] = $strOriginal[$indice] * 2;
           break;
        case 3:
           $arrProducto[$indice] = $strOriginal[$indice] * 7;
           break;
        case 4:
           $arrProducto[$indice] = $strOriginal[$indice] * 6;
           break;
        case 5:
           $arrProducto[$indice] = $strOriginal[$indice] * 5;
           break;
        case 6:
           $arrProducto[$indice] = $strOriginal[$indice] * 4;
           break;
        case 7:
           $arrProducto[$indice] = $strOriginal[$indice] * 3;
           break;
        case 8:
           $arrProducto[$indice] = $strOriginal[$indice] * 2;
           break;
     }
  }
}
foreach($arrProducto as $indice => $producto) $suma += $producto;
 $residuo = $suma % 11;
$intVerificador = $residuo==0 ? 0: 11 - $residuo;
//echo "$intVerificador == $intUltimo";
return ($intVerificador == $intUltimo? TRUE: FALSE);
}

function validarID($strId)
{
switch(strlen($strId)) {
  case 10:
     return validarCI($strId);
     break;
  case 13:
     return validarRUC($strId);
     break;
  default:
     return FALSE;
}
}
?>