Basic password hash function with password_hash() in PHP

<?php

$pass = '12345'; // your password
$salt = 'f992d3215d1db9948b68028c7dfce284'; // min 22 char

/* function */
function passHash($pass,$salt = 'default',$cost = 12) {
    if ($salt == 'default') {
        global $salt;
    }
    $options = [
        'cost' => $cost,
        'salt' => $salt // min 22 char
    ];
    $hash = password_hash($pass, PASSWORD_DEFAULT, $options);
    return $hash;
}

/* using */
echo passHash($pass). "\n"; // or
echo passHash($pass,'5f17092cfb6148c878b69ef0ebff9d4d',15);