diff --git a/app/Helpers/Attachments/AttachmentHelper.php b/app/Helpers/Attachments/AttachmentHelper.php
index 06e8cf0f79..bf3a66378f 100644
--- a/app/Helpers/Attachments/AttachmentHelper.php
+++ b/app/Helpers/Attachments/AttachmentHelper.php
@@ -172,7 +172,7 @@ class AttachmentHelper implements AttachmentHelperInterface
         // update attachment.
         $attachment->md5      = md5_file($path);
         $attachment->mime     = $mime;
-        $attachment->size     = \strlen($content);
+        $attachment->size     = strlen($content);
         $attachment->uploaded = true;
         $attachment->save();
 
@@ -274,8 +274,8 @@ class AttachmentHelper implements AttachmentHelperInterface
 
             $content   = $fileObject->fread($file->getSize());
             $encrypted = Crypt::encrypt($content);
-            Log::debug(sprintf('Full file length is %d and upload size is %d.', \strlen($content), $file->getSize()));
-            Log::debug(sprintf('Encrypted content is %d', \strlen($encrypted)));
+            Log::debug(sprintf('Full file length is %d and upload size is %d.', strlen($content), $file->getSize()));
+            Log::debug(sprintf('Encrypted content is %d', strlen($encrypted)));
 
             // store it:
             $this->uploadDisk->put($attachment->fileName(), $encrypted);
diff --git a/app/Http/Controllers/AttachmentController.php b/app/Http/Controllers/AttachmentController.php
index 7b58dbaf23..dc3ca4ce74 100644
--- a/app/Http/Controllers/AttachmentController.php
+++ b/app/Http/Controllers/AttachmentController.php
@@ -121,7 +121,7 @@ class AttachmentController extends Controller
                 ->header('Expires', '0')
                 ->header('Cache-Control', 'must-revalidate, post-check=0, pre-check=0')
                 ->header('Pragma', 'public')
-                ->header('Content-Length', \strlen($content));
+                ->header('Content-Length', strlen($content));
 
             return $response;
         }
diff --git a/app/Http/Controllers/ExportController.php b/app/Http/Controllers/ExportController.php
index 687be4e2b3..6d744049f3 100644
--- a/app/Http/Controllers/ExportController.php
+++ b/app/Http/Controllers/ExportController.php
@@ -90,7 +90,7 @@ class ExportController extends Controller
             ->header('Expires', '0')
             ->header('Cache-Control', 'must-revalidate, post-check=0, pre-check=0')
             ->header('Pragma', 'public')
-            ->header('Content-Length', \strlen($content));
+            ->header('Content-Length', strlen($content));
 
         return $response;
     }
diff --git a/app/Http/Controllers/Import/IndexController.php b/app/Http/Controllers/Import/IndexController.php
index 372c4c0a3f..f851e8c04d 100644
--- a/app/Http/Controllers/Import/IndexController.php
+++ b/app/Http/Controllers/Import/IndexController.php
@@ -173,7 +173,7 @@ class IndexController extends Controller
                  ->header('Expires', '0')
                  ->header('Cache-Control', 'must-revalidate, post-check=0, pre-check=0')
                  ->header('Pragma', 'public')
-                 ->header('Content-Length', \strlen($result));
+                 ->header('Content-Length', strlen($result));
 
         return $response;
     }
diff --git a/app/Http/Requests/Request.php b/app/Http/Requests/Request.php
index 829699115f..d531c6f7a1 100644
--- a/app/Http/Requests/Request.php
+++ b/app/Http/Requests/Request.php
@@ -241,7 +241,7 @@ class Request extends FormRequest
             return null;
         }
         $value = (string)$this->get($field);
-        if (10 === \strlen($value)) {
+        if (10 === strlen($value)) {
             // probably a date format.
             try {
                 $result = Carbon::createFromFormat('Y-m-d', $value);
diff --git a/app/Import/Converter/Amount.php b/app/Import/Converter/Amount.php
index a2ee082264..637867f32d 100644
--- a/app/Import/Converter/Amount.php
+++ b/app/Import/Converter/Amount.php
@@ -110,7 +110,7 @@ class Amount implements ConverterInterface
      */
     private function alternativeDecimalSign(string $value): bool
     {
-        $length      = \strlen($value);
+        $length      = strlen($value);
         $altPosition = $length - 2;
 
         return $length > 1 && ('.' === $value[$altPosition] || ',' === $value[$altPosition]);
@@ -125,7 +125,7 @@ class Amount implements ConverterInterface
      */
     private function decimalIsComma(string $value): bool
     {
-        $length          = \strlen($value);
+        $length          = strlen($value);
         $decimalPosition = $length - 3;
 
         return $length > 2 && ',' === $value[$decimalPosition];
@@ -140,7 +140,7 @@ class Amount implements ConverterInterface
      */
     private function decimalIsDot(string $value): bool
     {
-        $length          = \strlen($value);
+        $length          = strlen($value);
         $decimalPosition = $length - 3;
 
         return ($length > 2 && '.' === $value[$decimalPosition]) || ($length > 2 && strpos($value, '.') > $decimalPosition);
@@ -177,7 +177,7 @@ class Amount implements ConverterInterface
      */
     private function getAlternativeDecimalSign(string $value): string
     {
-        $length      = \strlen($value);
+        $length      = strlen($value);
         $altPosition = $length - 2;
 
         return $value[$altPosition];
@@ -222,7 +222,7 @@ class Amount implements ConverterInterface
         // have to strip the € because apparantly the Postbank (DE) thinks "1.000,00 €" is a normal way to format a number.
         $value = trim((string)str_replace(['€'], '', $value));
         $str   = preg_replace('/[^\-\(\)\.\,0-9 ]/', '', $value);
-        $len   = \strlen($str);
+        $len   = strlen($str);
         if ('(' === $str[0] && ')' === $str[$len - 1]) {
             $str = '-' . substr($str, 1, $len - 2);
         }
diff --git a/app/Import/Prerequisites/FakePrerequisites.php b/app/Import/Prerequisites/FakePrerequisites.php
index 39dbec4762..0a9576d620 100644
--- a/app/Import/Prerequisites/FakePrerequisites.php
+++ b/app/Import/Prerequisites/FakePrerequisites.php
@@ -97,7 +97,7 @@ class FakePrerequisites implements PrerequisitesInterface
     {
         $apiKey     = $data['api_key'] ?? '';
         $messageBag = new MessageBag();
-        if (32 !== \strlen($apiKey)) {
+        if (32 !== strlen($apiKey)) {
             $messageBag->add('api_key', 'API key must be 32 chars.');
 
             return $messageBag;
@@ -122,7 +122,7 @@ class FakePrerequisites implements PrerequisitesInterface
         if (null === $apiKey->data) {
             return false;
         }
-        if (32 === \strlen((string)$apiKey->data)) {
+        if (32 === strlen((string)$apiKey->data)) {
             return true;
         }
 
diff --git a/app/Repositories/ImportJob/ImportJobRepository.php b/app/Repositories/ImportJob/ImportJobRepository.php
index 19bff4e24c..5f11c87010 100644
--- a/app/Repositories/ImportJob/ImportJobRepository.php
+++ b/app/Repositories/ImportJob/ImportJobRepository.php
@@ -386,7 +386,7 @@ class ImportJobRepository implements ImportJobRepositoryInterface
         $attachment->md5      = md5($content);
         $attachment->filename = $name;
         $attachment->mime     = 'plain/txt';
-        $attachment->size     = \strlen($content);
+        $attachment->size     = strlen($content);
         $attachment->uploaded = false;
         $attachment->save();
         $encrypted = Crypt::encrypt($content);
diff --git a/app/Repositories/Rule/RuleRepository.php b/app/Repositories/Rule/RuleRepository.php
index 46ac34376c..718d95eb17 100644
--- a/app/Repositories/Rule/RuleRepository.php
+++ b/app/Repositories/Rule/RuleRepository.php
@@ -325,7 +325,7 @@ class RuleRepository implements RuleRepositoryInterface
         $rule->strict          = $data['strict'];
         $rule->stop_processing = $data['stop_processing'];
         $rule->title           = $data['title'];
-        $rule->description     = \strlen($data['description']) > 0 ? $data['description'] : null;
+        $rule->description     = strlen($data['description']) > 0 ? $data['description'] : null;
 
         $rule->save();
 
diff --git a/app/Rules/IsDateOrTime.php b/app/Rules/IsDateOrTime.php
index a8c76eb604..be3d3b7f45 100644
--- a/app/Rules/IsDateOrTime.php
+++ b/app/Rules/IsDateOrTime.php
@@ -56,7 +56,7 @@ class IsDateOrTime implements Rule
     public function passes($attribute, $value): bool
     {
         $value = (string)$value;
-        if (10 === \strlen($value)) {
+        if (10 === strlen($value)) {
             // probably a date format.
             try {
                 Carbon::createFromFormat('Y-m-d', $value);
diff --git a/app/Support/Amount.php b/app/Support/Amount.php
index bf887c3eb1..ded6728df5 100644
--- a/app/Support/Amount.php
+++ b/app/Support/Amount.php
@@ -289,7 +289,7 @@ class Amount
         $currencyCode = $this->tryDecrypt((string)$currencyPreference->data);
 
         // could still be json encoded:
-        if (\strlen($currencyCode) > 3) {
+        if (strlen($currencyCode) > 3) {
             $currencyCode = json_decode($currencyCode) ?? 'EUR';
         }
 
diff --git a/app/TransactionRules/Triggers/DescriptionEnds.php b/app/TransactionRules/Triggers/DescriptionEnds.php
index 71bb7e5f2f..d9215798ce 100644
--- a/app/TransactionRules/Triggers/DescriptionEnds.php
+++ b/app/TransactionRules/Triggers/DescriptionEnds.php
@@ -72,9 +72,9 @@ final class DescriptionEnds extends AbstractTrigger implements TriggerInterface
     public function triggered(TransactionJournal $journal): bool
     {
         $description       = strtolower($journal->description ?? '');
-        $descriptionLength = \strlen($description);
+        $descriptionLength = strlen($description);
         $search            = strtolower($this->triggerValue);
-        $searchLength      = \strlen($search);
+        $searchLength      = strlen($search);
 
         // if the string to search for is longer than the description,
         // return false.
diff --git a/app/TransactionRules/Triggers/DescriptionStarts.php b/app/TransactionRules/Triggers/DescriptionStarts.php
index 250f0ae3e3..77c665c711 100644
--- a/app/TransactionRules/Triggers/DescriptionStarts.php
+++ b/app/TransactionRules/Triggers/DescriptionStarts.php
@@ -74,7 +74,7 @@ final class DescriptionStarts extends AbstractTrigger implements TriggerInterfac
         $description = strtolower($journal->description ?? '');
         $search      = strtolower($this->triggerValue);
 
-        $part = substr($description, 0, \strlen($search));
+        $part = substr($description, 0, strlen($search));
 
         if ($part === $search) {
             Log::debug(sprintf('RuleTrigger DescriptionStarts for journal #%d: "%s" starts with "%s", return true.', $journal->id, $description, $search));
diff --git a/app/TransactionRules/Triggers/FromAccountEnds.php b/app/TransactionRules/Triggers/FromAccountEnds.php
index 8aa5a253d6..2dc567e935 100644
--- a/app/TransactionRules/Triggers/FromAccountEnds.php
+++ b/app/TransactionRules/Triggers/FromAccountEnds.php
@@ -82,9 +82,9 @@ final class FromAccountEnds extends AbstractTrigger implements TriggerInterface
             $name .= strtolower($account->name);
         }
 
-        $nameLength   = \strlen($name);
+        $nameLength   = strlen($name);
         $search       = strtolower($this->triggerValue);
-        $searchLength = \strlen($search);
+        $searchLength = strlen($search);
 
         // if the string to search for is longer than the account name,
         // it will never be in the account name.
diff --git a/app/TransactionRules/Triggers/FromAccountStarts.php b/app/TransactionRules/Triggers/FromAccountStarts.php
index 25b916b439..7cdc74e752 100644
--- a/app/TransactionRules/Triggers/FromAccountStarts.php
+++ b/app/TransactionRules/Triggers/FromAccountStarts.php
@@ -83,7 +83,7 @@ final class FromAccountStarts extends AbstractTrigger implements TriggerInterfac
         }
 
         $search = strtolower($this->triggerValue);
-        $part   = substr($name, 0, \strlen($search));
+        $part   = substr($name, 0, strlen($search));
 
         if ($part === $search) {
             Log::debug(sprintf('RuleTrigger FromAccountStarts for journal #%d: "%s" starts with "%s", return true.', $journal->id, $name, $search));
diff --git a/app/TransactionRules/Triggers/NotesEnd.php b/app/TransactionRules/Triggers/NotesEnd.php
index 3eb265ab5c..ebead68e0f 100644
--- a/app/TransactionRules/Triggers/NotesEnd.php
+++ b/app/TransactionRules/Triggers/NotesEnd.php
@@ -78,9 +78,9 @@ final class NotesEnd extends AbstractTrigger implements TriggerInterface
         if (null !== $note) {
             $text = strtolower($note->text);
         }
-        $notesLength  = \strlen($text);
+        $notesLength  = strlen($text);
         $search       = strtolower($this->triggerValue);
-        $searchLength = \strlen($search);
+        $searchLength = strlen($search);
 
         // if the string to search for is longer than the description,
         // return false
diff --git a/app/TransactionRules/Triggers/NotesStart.php b/app/TransactionRules/Triggers/NotesStart.php
index 4bef3f85e2..2ba1d5df11 100644
--- a/app/TransactionRules/Triggers/NotesStart.php
+++ b/app/TransactionRules/Triggers/NotesStart.php
@@ -80,7 +80,7 @@ final class NotesStart extends AbstractTrigger implements TriggerInterface
         }
         $search = strtolower($this->triggerValue);
 
-        $part = substr($text, 0, \strlen($search));
+        $part = substr($text, 0, strlen($search));
 
         if ($part === $search) {
             Log::debug(sprintf('RuleTrigger NotesStart for journal #%d: "%s" starts with "%s", return true.', $journal->id, $text, $search));
diff --git a/app/TransactionRules/Triggers/ToAccountEnds.php b/app/TransactionRules/Triggers/ToAccountEnds.php
index a9474e32c0..3026ea6afa 100644
--- a/app/TransactionRules/Triggers/ToAccountEnds.php
+++ b/app/TransactionRules/Triggers/ToAccountEnds.php
@@ -82,9 +82,9 @@ final class ToAccountEnds extends AbstractTrigger implements TriggerInterface
             $toAccountName .= strtolower($account->name);
         }
 
-        $toAccountNameLength = \strlen($toAccountName);
+        $toAccountNameLength = strlen($toAccountName);
         $search              = strtolower($this->triggerValue);
-        $searchLength        = \strlen($search);
+        $searchLength        = strlen($search);
 
         // if the string to search for is longer than the account name,
         // return false
diff --git a/app/TransactionRules/Triggers/ToAccountStarts.php b/app/TransactionRules/Triggers/ToAccountStarts.php
index 8c813b499f..861e36d983 100644
--- a/app/TransactionRules/Triggers/ToAccountStarts.php
+++ b/app/TransactionRules/Triggers/ToAccountStarts.php
@@ -83,7 +83,7 @@ final class ToAccountStarts extends AbstractTrigger implements TriggerInterface
         }
 
         $search = strtolower($this->triggerValue);
-        $part   = substr($toAccountName, 0, \strlen($search));
+        $part   = substr($toAccountName, 0, strlen($search));
 
         if ($part === $search) {
             Log::debug(sprintf('RuleTrigger ToAccountStarts for journal #%d: "%s" starts with "%s", return true.', $journal->id, $toAccountName, $search));
diff --git a/app/Validation/FireflyValidator.php b/app/Validation/FireflyValidator.php
index bb36f45cb6..27824c5928 100644
--- a/app/Validation/FireflyValidator.php
+++ b/app/Validation/FireflyValidator.php
@@ -55,7 +55,7 @@ class FireflyValidator extends Validator
      */
     public function validate2faCode($attribute, $value): bool
     {
-        if (!\is_string($value) || null === $value || 6 !== \strlen($value)) {
+        if (!\is_string($value) || null === $value || 6 !== strlen($value)) {
             return false;
         }
 
@@ -117,7 +117,7 @@ class FireflyValidator extends Validator
      */
     public function validateIban($attribute, $value): bool
     {
-        if (!\is_string($value) || null === $value || \strlen($value) < 6) {
+        if (!\is_string($value) || null === $value || strlen($value) < 6) {
             return false;
         }
         // strip spaces