PHP compatibility fix

Author: bwalkerl

classes/check/dnsnoreply.php

@@ -79,13 +79,13 @@ public function get_result() : result {
         if ($noreplydomain == $domain) {
             $status = result::OK;
             $summary = "LMS is same as noreply domain";
-        } else if (str_contains($domain, '.' . $noreplydomain)) {
+        } else if (strpos($domain, '.' . $noreplydomain) !== false) {
             $status = result::OK;
             $summary = "LMS is a subdomain of noreply domain";
-        } else if (str_contains($noreplydomain, '.' . $domain)) {
+        } else if (strpos($noreplydomain, '.' . $domain) !== false) {
             $status = result::OK;
             $summary = "Noreply domain is a subdomain of LMS";
-        } else if ($noreply == $primarydomain || str_contains($noreplydomain, '.' . $primarydomain)) {
+        } else if ($noreply == $primarydomain || strpos($noreplydomain, '.' . $primarydomain) !== false) {
             $summary = "LMS and noreply domain have a shared domain";
         } else {
             $summary = "LMS and noreply domain have nothing in common";

classes/dns_util.php

@@ -276,13 +276,13 @@ public function get_selector_suffix($domain = '') {
         if ($primarydomain == $noreplydomain) {
             // Noreply domain is same as primary domain, add all LMS subdomains.
             $suffix = $this->get_subdomains($domain);
-        } else if (str_contains($domain, '.' . $noreplydomain)) {
+        } else if (strpos($domain, '.' . $noreplydomain) !== false) {
             // Noreply domain includes part of the LMS subdomain, only add different subdomains.
             $suffix = str_replace('.' . $noreplydomain, '', $domain);
-        } else if (str_contains($noreplydomain, '.' . $domain)) {
+        } else if (strpos($noreplydomain, '.' . $domain) !== false) {
             // Noreply domain is a subdomain of LMS, domain already has all info.
             $suffix = '';
-        } else if (str_contains($noreplydomain, '.' . $primarydomain)) {
+        } else if (strpos($noreplydomain, '.' . $primarydomain) !== false) {
             // Noreply domain is a different subdomain of primary domain, add all LMS subdomains.
             $suffix = $this->get_subdomains($domain);
         } else {