Use PHP 8 language contructs

Author: mmoll

MO4/Sniffs/Commenting/PropertyCommentSniff.php

@@ -112,8 +112,8 @@ protected function processTokenWithinScope(File $phpcsFile, $stackPtr, $currScop
                     $stackPtr,
                     'NoDocBlockAllowed'
                 );
-            } elseif (0 !== \strncmp($tokens[$postComment]['content'], '//', 2)
-                && '*/' !== \substr($tokens[$postComment]['content'], -2)
+            } elseif (!\str_starts_with($tokens[$postComment]['content'], '//')
+                && !\str_ends_with($tokens[$postComment]['content'], '*/')
             ) {
                 $phpcsFile->addError(
                     'no multiline comments after declarations allowed',

MO4/Sniffs/Formatting/AlphabeticalUseStatementsSniff.php

@@ -336,17 +336,13 @@ private function findNewDestination(File $phpcsFile, int $stackPtr, string $impo
      */
     private function compareString(string $a, string $b): int
     {
-        switch ($this->order) {
-            case 'string':
-                return \strcmp($a, $b);
-            case 'string-locale':
-                return \strcoll($a, $b);
-            case 'string-case-insensitive':
-                return \strcasecmp($a, $b);
-            default:
-                // Default is 'dictionary'.
-                return $this->dictionaryCompare($a, $b);
-        }
+        return match ($this->order) {
+            'string' => \strcmp($a, $b),
+            'string-locale' => \strcoll($a, $b),
+            'string-case-insensitive' => \strcasecmp($a, $b),
+            // Default is 'dictionary'.
+            default => $this->dictionaryCompare($a, $b),
+        };
     }
 
     /**

MO4/Sniffs/Formatting/UnnecessaryNamespaceUsageSniff.php

@@ -361,7 +361,7 @@ private function checkShorthandPossible(File $phpcsFile, array $useStatements, s
             );
 
             $replaceClassName = true;
-        } elseif ('' !== $namespace && 0 === \strpos($fullClassName, $namespace)) {
+        } elseif ('' !== $namespace && \str_starts_with($fullClassName, $namespace)) {
             $replacement = \substr($fullClassName, \strlen($namespace));
 
             $data    = [

MO4/Sniffs/Strings/VariableInDoubleQuotedStringSniff.php

@@ -80,7 +80,7 @@ public function process(File $phpcsFile, $stackPtr): void
                 }
 
                 if (\strpos(\substr($content, 0, $pos), '{') > 0
-                    && false === \strpos(\substr($content, 0, $pos), '}')
+                    && !\str_contains(\substr($content, 0, $pos), '}')
                 ) {
                     continue;
                 }