diff --git a/administrator/components/com_associations/src/Helper/AssociationsHelper.php b/administrator/components/com_associations/src/Helper/AssociationsHelper.php
index 098a7ac90fbec..67c4d0142ebd4 100644
--- a/administrator/components/com_associations/src/Helper/AssociationsHelper.php
+++ b/administrator/components/com_associations/src/Helper/AssociationsHelper.php
@@ -193,7 +193,7 @@ private static function getExtensionHelperClassName($extensionName)
      */
     private static function getExtensionRealName($extensionName)
     {
-        return !str_contains($extensionName, 'com_') ? $extensionName : substr($extensionName, 4);
+        return !str_starts_with($extensionName, 'com_') ? $extensionName : substr($extensionName, 4);
     }
 
     /**
diff --git a/administrator/components/com_cpanel/src/View/Cpanel/HtmlView.php b/administrator/components/com_cpanel/src/View/Cpanel/HtmlView.php
index 3e8bc11296dd2..bc861c51637d0 100644
--- a/administrator/components/com_cpanel/src/View/Cpanel/HtmlView.php
+++ b/administrator/components/com_cpanel/src/View/Cpanel/HtmlView.php
@@ -69,7 +69,7 @@ public function display($tpl = null)
             $parts     = explode('.', $dashboard);
             $component = $parts[0];
 
-            if (!str_contains($component, 'com_')) {
+            if (!str_starts_with($component, 'com_')) {
                 $component = 'com_' . $component;
             }
 
diff --git a/administrator/components/com_postinstall/src/Helper/PostinstallHelper.php b/administrator/components/com_postinstall/src/Helper/PostinstallHelper.php
index 59838745fbb0f..b41667da25a2c 100644
--- a/administrator/components/com_postinstall/src/Helper/PostinstallHelper.php
+++ b/administrator/components/com_postinstall/src/Helper/PostinstallHelper.php
@@ -32,9 +32,9 @@ class PostinstallHelper
      */
     public function parsePath($path)
     {
-        if (str_contains($path, 'site://')) {
+        if (str_starts_with($path, 'site://')) {
             $path = JPATH_ROOT . str_replace('site://', '/', $path);
-        } elseif (str_contains($path, 'admin://')) {
+        } elseif (str_starts_with($path, 'admin://')) {
             $path = JPATH_ADMINISTRATOR . str_replace('admin://', '/', $path);
         }
 
diff --git a/modules/mod_wrapper/src/Helper/WrapperHelper.php b/modules/mod_wrapper/src/Helper/WrapperHelper.php
index e30aeb56c6ce8..ef57b64d7567b 100644
--- a/modules/mod_wrapper/src/Helper/WrapperHelper.php
+++ b/modules/mod_wrapper/src/Helper/WrapperHelper.php
@@ -52,7 +52,7 @@ public function getParamsWrapper(Registry $params, SiteApplication $app)
             if (str_starts_with($url, '/')) {
                 // Relative URL in component. use server http_host.
                 $url = 'http://' . $app->getInput()->server->get('HTTP_HOST') . $url;
-            } elseif (!str_contains($url, 'http') && !str_contains($url, 'https')) {
+            } elseif (!str_starts_with($url, 'http://') && !str_starts_with($url, 'https://')) {
                 $url = 'http://' . $url;
             }
         }
diff --git a/plugins/system/languagefilter/src/Extension/LanguageFilter.php b/plugins/system/languagefilter/src/Extension/LanguageFilter.php
index eec4e7fb45706..446e2275a0980 100644
--- a/plugins/system/languagefilter/src/Extension/LanguageFilter.php
+++ b/plugins/system/languagefilter/src/Extension/LanguageFilter.php
@@ -514,7 +514,7 @@ public function parseRule(&$router, &$uri)
             $language_new = $this->languageFactory->createLanguage($lang_code, (bool) $app->get('debug_lang'));
 
             foreach ($language->getPaths() as $extension => $files) {
-                if (str_contains($extension, 'plg_system')) {
+                if (str_starts_with($extension, 'plg_system')) {
                     $extension_name = substr($extension, 11);
 
                     $language_new->load($extension, JPATH_ADMINISTRATOR)