add things from 27-03-26

Zweites Jahr/unterrichts_projekt/portal/functions.php

@@ -1,22 +1,5 @@
-
-
-
 <?php
 
-/**
- * Check password strength (1/2)
- * @param string $password password to check
- * @return bool - true or false
- */
-function isStrongPassword(string $password): bool
-{
-    // min. 8 Zeichen, 1 Kleinbuchstabe, 1 Großbuchstabe, 1 Zahl, 1 Sonderzeichen
-    return (bool) preg_match(
-        '/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[^a-zA-Z0-9]).{8,}$/',
-        $password
-    );
-}
-
 /**
  * Check password strength (2/2)
  * @param string $password password to check
@@ -41,7 +24,10 @@ function checkPasswordStrength(string $password): bool {
     //check if spec. chars 
     if(preg_match('/[^a-zA-Z0-9]/', $password)) $strength++;
 
+    // valid password: #Test12345
     return($strength >= 5);
-   
+}
 
+function isValidEmail(string $email):bool {
+    return filter_var($email, FILTER_VALIDATE_EMAIL) !== false;
 }