diff --git a/system/Helpers/filesystem_helper.php b/system/Helpers/filesystem_helper.php
index e4e78aa82ab8..0168b7cd726a 100644
--- a/system/Helpers/filesystem_helper.php
+++ b/system/Helpers/filesystem_helper.php
@@ -55,7 +55,7 @@ function directory_map(string $sourceDir, int $directoryDepth = 0, bool $hidden
             closedir($fp);
 
             return $fileData;
-        } catch (Throwable $e) {
+        } catch (Throwable) {
             return [];
         }
     }
@@ -131,7 +131,7 @@ function write_file(string $path, string $data, string $mode = 'wb'): bool
             fclose($fp);
 
             return is_int($result);
-        } catch (Throwable $e) {
+        } catch (Throwable) {
             return false;
         }
     }
@@ -180,7 +180,7 @@ function delete_files(string $path, bool $delDir = false, bool $htdocs = false,
             }
 
             return true;
-        } catch (Throwable $e) {
+        } catch (Throwable) {
             return false;
         }
     }
@@ -229,7 +229,7 @@ function get_filenames(
                     }
                 }
             }
-        } catch (Throwable $e) {
+        } catch (Throwable) {
             return [];
         }
 
@@ -279,7 +279,7 @@ function get_dir_file_info(string $sourceDir, bool $topLevelOnly = true, bool $r
             closedir($fp);
 
             return $fileData;
-        } catch (Throwable $fe) {
+        } catch (Throwable) {
             return [];
         }
     }
diff --git a/system/Helpers/form_helper.php b/system/Helpers/form_helper.php
index 296504f214a8..00cfb1c6085f 100644
--- a/system/Helpers/form_helper.php
+++ b/system/Helpers/form_helper.php
@@ -33,9 +33,9 @@ function form_open(string $action = '', $attributes = [], array $hidden = []): s
         if (! $action) {
             $action = current_url(true);
         } // If an action is not a full URL then turn it into one
-        elseif (strpos($action, '://') === false) {
+        elseif (! str_contains($action, '://')) {
             // If an action has {locale}
-            if (strpos($action, '{locale}') !== false) {
+            if (str_contains($action, '{locale}')) {
                 $action = str_replace('{locale}', service('request')->getLocale(), $action);
             }
 
@@ -62,7 +62,7 @@ function form_open(string $action = '', $attributes = [], array $hidden = []): s
         // Add CSRF field if enabled, but leave it out for GET requests and requests to external websites
         $before = service('filters')->getFilters()['before'];
 
-        if ((in_array('csrf', $before, true) || array_key_exists('csrf', $before)) && strpos($action, base_url()) !== false && ! stripos($form, 'method="get"')) {
+        if ((in_array('csrf', $before, true) || array_key_exists('csrf', $before)) && str_contains($action, base_url()) && ! stripos($form, 'method="get"')) {
             $form .= csrf_field($csrfId ?? null);
         }
 
diff --git a/system/Helpers/html_helper.php b/system/Helpers/html_helper.php
index 6d2b3b6f3c67..9806f10e9b87 100755
--- a/system/Helpers/html_helper.php
+++ b/system/Helpers/html_helper.php
@@ -110,7 +110,7 @@ function img($src = '', bool $indexPage = false, $attributes = ''): string
         $img = '<img';
 
         // Check for a relative URI
-        if (! preg_match('#^([a-z]+:)?//#i', $src['src']) && strpos($src['src'], 'data:') !== 0) {
+        if (! preg_match('#^([a-z]+:)?//#i', $src['src']) && ! str_starts_with($src['src'], 'data:')) {
             if ($indexPage === true) {
                 $img .= ' src="' . site_url($src['src']) . '"';
             } else {
diff --git a/system/Helpers/number_helper.php b/system/Helpers/number_helper.php
index f07b95e0298a..96468ddcdea3 100644
--- a/system/Helpers/number_helper.php
+++ b/system/Helpers/number_helper.php
@@ -28,7 +28,7 @@ function number_to_size($num, int $precision = 1, ?string $locale = null)
         try {
             // @phpstan-ignore-next-line
             $num = 0 + str_replace(',', '', (string) $num);
-        } catch (ErrorException $ee) {
+        } catch (ErrorException) {
             // Catch "Warning:  A non-numeric value encountered"
             return false;
         }
@@ -83,7 +83,7 @@ function number_to_amount($num, int $precision = 0, ?string $locale = null)
         try {
             // @phpstan-ignore-next-line
             $num = 0 + str_replace(',', '', $num);
-        } catch (ErrorException $ee) {
+        } catch (ErrorException) {
             return false;
         }
 
diff --git a/system/Helpers/text_helper.php b/system/Helpers/text_helper.php
index 16ea296e0321..7f5fb2cf2d3f 100755
--- a/system/Helpers/text_helper.php
+++ b/system/Helpers/text_helper.php
@@ -343,7 +343,7 @@ function word_wrap(string $str, int $charlim = 76): string
         $str = preg_replace('| +|', ' ', $str);
 
         // Standardize newlines
-        if (strpos($str, "\r") !== false) {
+        if (str_contains($str, "\r")) {
             $str = str_replace(["\r\n", "\r"], "\n", $str);
         }
 
diff --git a/system/Router/AutoRouterImproved.php b/system/Router/AutoRouterImproved.php
index 46a7a1f78c3d..0db5ebc1ddc2 100644
--- a/system/Router/AutoRouterImproved.php
+++ b/system/Router/AutoRouterImproved.php
@@ -427,7 +427,7 @@ private function checkParameters(): void
     {
         try {
             $refClass = new ReflectionClass($this->controller);
-        } catch (ReflectionException $e) {
+        } catch (ReflectionException) {
             throw PageNotFoundException::forControllerNotFound($this->controller, $this->method);
         }