Replace version checks with predefined constant

qa-include/db/users.php

@@ -44,7 +44,7 @@
 	{
 		require_once QA_INCLUDE_DIR.'util/string.php';
 
-		if (!qa_php_version_below('5.3.7')) {
+		if (QA_PASSWORD_HASH) {
 			qa_db_query_sub(
 				'INSERT INTO ^users (created, createip, email, passhash, level, handle, loggedin, loginip) '.
 				'VALUES (NOW(), COALESCE(INET_ATON($), 0), $, $, #, $, NOW(), COALESCE(INET_ATON($), 0))',
@@ -163,7 +163,7 @@
 
 		require_once QA_INCLUDE_DIR.'util/string.php';
 
-		if (!qa_php_version_below('5.3.7')) {
+		if (QA_PASSWORD_HASH) {
 			qa_db_query_sub(
 				'UPDATE ^users SET passhash=$, passsalt=NULL, passcheck=NULL WHERE userid=$',
 				password_hash($password, PASSWORD_BCRYPT), $userid

qa-include/pages/account.php

@@ -56,7 +56,7 @@
 	$doconfirms = qa_opt('confirm_user_emails') && $useraccount['level'] < QA_USER_LEVEL_EXPERT;
 	$isconfirmed = ($useraccount['flags'] & QA_USER_FLAGS_EMAIL_CONFIRMED) ? true : false;
 
-	if (!qa_php_version_below('5.3.7')) {
+	if (QA_PASSWORD_HASH) {
 		$haspasswordold = isset($useraccount['passsalt']) && isset($useraccount['passcheck']);
 		$haspassword = isset($useraccount['passhash']);
 	} else {
@@ -211,7 +211,7 @@
 			else {
 				$errors = array();
 
-				if (!qa_php_version_below('5.3.7')) {
+				if (QA_PASSWORD_HASH) {
 					if (
 						($haspasswordold && (strtolower(qa_db_calc_passcheck($inoldpassword, $useraccount['passsalt'])) != strtolower($useraccount['passcheck']))) ||
 						(!$haspasswordold && $haspassword && !password_verify($inoldpassword,$useraccount['passhash']))

qa-include/pages/login.php

@@ -68,7 +68,7 @@
 					$inuserid=$matchusers[0];
 					$userinfo=qa_db_select_with_pending(qa_db_user_account_selectspec($inuserid, true));
 
-					if (!qa_php_version_below('5.3.7')) {
+					if (QA_PASSWORD_HASH) {
 						$haspassword=isset($userinfo['passhash']);
 						$haspasswordold=isset($userinfo['passsalt']) && isset($userinfo['passcheck']);