How important is it for PHP developers to understand the mathematical and cryptographic principles behind hash functions and encryption algorithms?

It is crucial for PHP developers to understand the mathematical and cryptographic principles behind hash functions and encryption algorithms in order to securely handle sensitive data. Without this understanding, developers may inadvertently use insecure methods that can lead to data breaches and compromised systems.

// Example of using a secure hash function in PHP
$password = "secret123";
$hashed_password = password_hash($password, PASSWORD_DEFAULT);