Improve PHP 8.4 compatibility

.github/workflows/test.yml

@@ -12,15 +12,15 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: ['8.2', '8.1', '7.4', '7.3', '7.2', '7.1', '7.0', '5.6']
+        php: ['8.3', '8.1', '8.0', '7.4']
         coverage: [false]
         random: [false]
         include:
-          - php: '8.0'
+          - php: '8.2'
             coverage: true
-          - php: '8.0'
+          - php: '8.2'
             random: true
-          - php: '8.3'
+          - php: '8.4'
             experimental: true
 
     steps:

composer.json

@@ -4,7 +4,7 @@
   "description": "A collection of AMP tools making it easier to publish and host AMP pages with PHP.",
   "license": "Apache-2.0",
   "require": {
-    "php": "^5.6 || ^7.0 || ^8.0",
+    "php": "^7.4 || ^8.0",
     "ext-dom": "*",
     "ext-filter": "*",
     "ext-iconv": "*",

src/Cli/Executable.php

@@ -77,7 +77,7 @@ abstract class Executable
      * @param Colors|null  $colors    Optional. Instance of the Colors object to use. Defaults to null to instantiate a
      *                                new one.
      */
-    public function __construct($autocatch = true, Options $options = null, Colors $colors = null)
+    public function __construct($autocatch = true, ?Options $options = null, ?Colors $colors = null)
     {
         if ($autocatch) {
             set_exception_handler([$this, 'fatal']);

src/Cli/Options.php

@@ -77,7 +77,7 @@
      * @param Colors $colors Optional. Configured color object.
      * @throws InvalidArgument When arguments can't be read.
      */
-    public function __construct(Colors $colors = null)
+    public function __construct(?Colors $colors = null)
     {
         $this->colors = $colors instanceof Colors ? $colors : new Colors();
 
@@ -542,7 +542,7 @@
         }
 
         if (
             is_array($_SERVER)
             &&
             array_key_exists('argv', $_SERVER)
             &&

src/Cli/TableFormatter.php

@@ -74,7 +74,7 @@
      *
      * @param Colors|null $colors Optional. Instance of the Colors helper object.
      */
-    public function __construct(Colors $colors = null)
+    public function __construct(?Colors $colors = null)
     {
         // Try to get terminal width.
         $width = $this->getTerminalWidth();
@@ -381,11 +381,11 @@
      */
     protected function wordwrap($string, $width = 75, $break = "\n", $cut = false)
     {
         if (! is_int($width) || $width < 0) {
             $width = 75;
         }
 
         if (! is_string($break) || empty($break)) {
             $break = "\n";
         }
 

src/CssLength.php

@@ -111,8 +111,8 @@
         $pattern = '/^(?<numeral>\d+(?:\.\d+)?)(?<unit>px|em|rem|vh|vw|vmin|vmax)?$/';
         if (preg_match($pattern, $this->attrValue, $match)) {
             $this->isValid = true;
             $this->numeral = isset($match['numeral']) ? (float)$match['numeral'] : $this->numeral;
-            $this->unit    = isset($match['unit']) ? $match['unit'] : $this->unit;
+            $this->unit    = $match['unit'] ?? $this->unit;
         }
     }
 

src/Dom/Document.php

@@ -227,7 +227,7 @@
             $options = [Option::ENCODING => $options];
         }
 
-        $encoding = isset($options[Option::ENCODING]) ? $options[Option::ENCODING] : null;
+        $encoding = $options[ Option::ENCODING ] ?? null;
 
         $dom = new self('', $encoding);
 
@@ -258,7 +258,7 @@
             $options = [Option::ENCODING => $options];
         }
 
-        $encoding = isset($options[Option::ENCODING]) ? $options[Option::ENCODING] : null;
+        $encoding = $options[ Option::ENCODING ] ?? null;
 
         $dom = new self('', $encoding);
 
@@ -380,7 +380,7 @@
                 continue;
             }
 
             if (! $filter instanceof Filter) {
                 throw InvalidDocumentFilter::forFilter($filter);
             }
 
@@ -413,7 +413,7 @@
      * @return string The HTML, or false if an error occurred.
      */
     #[\ReturnTypeWillChange]
-    public function saveHTML(DOMNode $node = null)
+    public function saveHTML(?DOMNode $node = null)
     {
         return $this->saveHTMLFragment($node);
     }
@@ -424,7 +424,7 @@
      * @param DOMNode|null $node Optional. Parameter to output a subset of the document.
      * @return string The HTML fragment, or false if an error occurred.
      */
-    public function saveHTMLFragment(DOMNode $node = null)
+    public function saveHTMLFragment(?DOMNode $node = null)
     {
         $filtersInReverse = array_reverse($this->filters);
 
@@ -551,7 +551,7 @@
             $content   = preg_replace(self::HTML_STRUCTURE_HTML_START_TAG, '', $content, 1);
 
             preg_match(self::HTML_STRUCTURE_HTML_END_TAG, $content, $matches);
-            $htmlEnd = isset($matches['html_end']) ? $matches['html_end'] : $htmlEnd;
+            $htmlEnd = $matches['html_end'] ?? $htmlEnd;
             $content = preg_replace(self::HTML_STRUCTURE_HTML_END_TAG, '', $content, 1);
         }
 

src/Dom/Document/Filter/AmpBindAttributes.php

@@ -215,7 +215,7 @@ public function afterSave($html)
                     ||
                     in_array($attrName, $this->convertedAmpBindAttributes, true)
                 ) {
-                    $attrValue = isset($attrMatches['value']) ? $attrMatches['value'] : '=""';
+                    $attrValue = $attrMatches['value'] ?? '=""';
                     $newAttrs .= " [{$attrName}]{$attrValue}";
                 } else {
                     $newAttrs .= $attrMatches[0];

src/Dom/Options.php

@@ -72,7 +72,7 @@ public function offsetUnset($option)
     #[\ReturnTypeWillChange]
     public function offsetGet($option)
     {
-        return isset($this->options[$option]) ? $this->options[$option] : null;
+        return $this->options[ $option ] ?? null;
     }
 
     /**

src/Optimizer/Error/CannotPreloadImage.php

@@ -25,7 +25,7 @@ final class CannotPreloadImage implements Error
      * @param Element|null $element Optional. Image element that has the srcset attribute, or null if no element.
      * @return self
      */
-    public static function fromImageWithSrcsetAttribute(Element $element = null)
+    public static function fromImageWithSrcsetAttribute(?Element $element = null)
     {
         $message = self::SRCSET_STRING;
 

src/Optimizer/TransformationEngine.php

@@ -51,14 +51,14 @@ final class TransformationEngine
      * @param Configuration|null    $configuration Optional. Configuration data to use for setting up the transformers.
      * @param RemoteGetRequest|null $remoteRequest Optional. Transport to use for remote requests. Defaults to the
      *                                             CurlRemoteGetRequest implementation shipped with the library.
-     * @param Spec                  $spec          Optional. Validator spec instance to use.
+     * @param Spec|null             $spec          Optional. Validator spec instance to use.
      */
     public function __construct(
-        Configuration $configuration = null,
-        RemoteGetRequest $remoteRequest = null,
-        Spec $spec = null
+        ?Configuration $configuration = null,
+        ?RemoteGetRequest $remoteRequest = null,
+        ?Spec $spec = null
     ) {
-        $this->configuration = isset($configuration) ? $configuration : new DefaultConfiguration();
+        $this->configuration = $configuration ?? new DefaultConfiguration();
         $this->remoteRequest = $remoteRequest;
         $this->spec          = $spec;
 

src/Url.php

@@ -138,7 +138,7 @@ final class Url
      * @param Url|null    $baseUrl Base URL.
      * @throws FailedToParseUrl Exception when the URL or Base URL is malformed.
      */
-    public function __construct($url = null, Url $baseUrl = null)
+    public function __construct($url = null, ?Url $baseUrl = null)
     {
         $parsedUrl = [];
 

tests/Optimizer/TransformationEngineTest.php

@@ -132,7 +132,7 @@ public function testDependencyResolution($transformerClass)
      * @param Configuration|null $configuration Optional. Configuration object to use.
      * @return TransformationEngine Transformation engine instance to test against.
      */
-    private function getTransformationEngine(Configuration $configuration = null)
+    private function getTransformationEngine(?Configuration $configuration = null)
     {
         return new TransformationEngine(
             $configuration,