1. Make function, which joins 3 variables and returns this result.

2. Make function calculator for  + - * / using 3 parameters:
<?

funkcija ("veiksmas" , skaičius1 , skaičius2);

?>

3. Faind errors. Result- 10:
<?

function $a($b) {

if ($b == 10 ) {
return 10 ;
}else{
return 20 ;

}

echo $a(10);

?>

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