Like java we don't have short datatype in PHP. Before we proceed lets understand about short datatype in java.

<?php
//method to convert integer type value to short type value
function shortconversion($a){
    //checking datatype
    if(gettype($a) == 'integer'){
        //check the range of number
        if($a <= 32767 && $a >= -32768){
            return $a;            
        }
        //number greater than 32767
        if($a > 32767){
            $posit = $a - 32767;
            $retpost = -32768 + $posit - 1;
            return $retpost;
            
        }
        //number lesser than -32768
        if($a < -32768){
            $num = $a + 32768;
            $a = -$a;
            $gen_num = $a + ($num*2);
            return $gen_num;
        }
    }else{
        return false;
    }
    
}
//pass any integer value to function
$con_val = shortconversion(-32771.);
if($con_val == false){
    echo 'Only Integer Number Required';
}else{
    echo $con_val;
}
?>