<?php function emptyInputSignup($name, $email, $username, $pwd, $pwdrepeat) { if (empty($name) || empty($email) || empty($username) || empty($pwd) || empty($pwdrepeat) ) { $result = true ; } else { $result = false; } return $result; } function invalidUid($username) { if (!preg_match("/^[a-zA-Z0-9]*$/", $username)) { $result = true ; } else { $result = false; } return $result; } $test = emptyInputSignup("John Debry", "email@example.com", "johny", "Qwerty123%", "Qwerty123%"); var_dump($test); var_dump(invalidUid('johny')); var_dump(emptyInputSignup('', '', '', '', '')); var_dump(invalidUid('')); // should be TRUE - not OK function invalidUid_($username) { $result = true; if (preg_match("/^[a-zA-Z0-9]+$/", $username)) { $result = false ; } return $result; } var_dump(invalidUid_('')); // should be TRUE - OK ?>
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