how to hash and save passwords in php code example

Example 1: php hash password

//hash password
$pass = password_hash($password, PASSWORD_DEFAULT);

//verify password
password_verify($password, $hashed_password); // returns true

Example 2: password_hash() php 7

<?php
/**
 * Note that the salt here is randomly generated.
 * Never use a static salt or one that is not randomly generated.
 *
 * For the VAST majority of use-cases, let password_hash generate the salt randomly for you
 */
$options = [
    'cost' => 11,
    'salt' => mcrypt_create_iv(22, MCRYPT_DEV_URANDOM),
];
echo password_hash("rasmuslerdorf", PASSWORD_BCRYPT, $options)."\n";
?>