support php8

.github/workflows/push.yml

@@ -9,6 +9,13 @@ env:
 jobs:
   tests:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php:
+          - '5.6'
+          - '7.4'
+          - '8.0'
+          - '8.1'
     steps:
       -
         name: 'Check out the repo'
@@ -19,7 +26,7 @@ jobs:
         run: 'docker login --username "$DOCKERHUB_USER" --password "$DOCKERHUB_TOKEN"'
       -
         name: 'Build image'
-        run: 'docker build -t $APP_IMAGE .'
+        run: 'docker build --build-arg="PHP_VERSION=${{ matrix.php}}" -t $APP_IMAGE .'
       -
         name: 'Run tests'
         run: 'docker run ${{env.APP_IMAGE}} composer ci'

Dockerfile

@@ -1,4 +1,5 @@
-FROM php:7.4
+ARG PHP_VERSION=1.21
+FROM php:${PHP_VERSION}
 
 ARG DEBIAN_FRONTEND=noninteractive
 ARG COMPOSER_FLAGS="--prefer-dist --no-interaction"

src/CsvReader.php

@@ -169,6 +169,7 @@ public function getLineBreak()
     /**
      * @inheritdoc
      */
+    #[\ReturnTypeWillChange]
     public function rewind()
     {
         rewind($this->getFilePointer());
@@ -217,6 +218,7 @@ public function getLineBreakAsText()
     /**
      * @inheritdoc
      */
+    #[\ReturnTypeWillChange]
     public function current()
     {
         return $this->currentRow;
@@ -225,6 +227,7 @@ public function current()
     /**
      * @inheritdoc
      */
+    #[\ReturnTypeWillChange]
     public function next()
     {
         $this->currentRow = $this->readLine();
@@ -234,6 +237,7 @@ public function next()
     /**
      * @inheritdoc
      */
+    #[\ReturnTypeWillChange]
     public function key()
     {
         return $this->rowCounter;
@@ -242,6 +246,7 @@ public function key()
     /**
      * @inheritdoc
      */
+    #[\ReturnTypeWillChange]
     public function valid()
     {
         return $this->currentRow !== false;