PSR1/SideEffects: fix sniff to work with the PHP 8 identifier tokens

Includes adjusting a pre-existing test to cover this change.

Author: jrfnl

src/Standards/PSR1/Sniffs/Files/SideEffectsSniff.php

@@ -201,8 +201,9 @@ private function searchForConflict($phpcsFile, $start, $end, $tokens)
 
                 $i = $tokens[$i]['scope_closer'];
                 continue;
-            } else if ($tokens[$i]['code'] === T_STRING
-                && strtolower($tokens[$i]['content']) === 'define'
+            } else if (($tokens[$i]['code'] === T_STRING
+                || $tokens[$i]['code'] === T_NAME_FULLY_QUALIFIED)
+                && strtolower(ltrim($tokens[$i]['content'], '\\')) === 'define'
             ) {
                 $prev = $phpcsFile->findPrevious(Tokens::$emptyTokens, ($i - 1), null, true);
                 if ($tokens[$prev]['code'] !== T_OBJECT_OPERATOR
@@ -226,8 +227,9 @@ private function searchForConflict($phpcsFile, $start, $end, $tokens)
             // Special case for defined() as it can be used to see
             // if a constant (a symbol) should be defined or not and
             // doesn't need to use a full conditional block.
-            if ($tokens[$i]['code'] === T_STRING
-                && strtolower($tokens[$i]['content']) === 'defined'
+            if (($tokens[$i]['code'] === T_STRING
+                || $tokens[$i]['code'] === T_NAME_FULLY_QUALIFIED)
+                && strtolower(ltrim($tokens[$i]['content'], '\\')) === 'defined'
             ) {
                 $openBracket = $phpcsFile->findNext(Tokens::$emptyTokens, ($i + 1), null, true);
                 if ($openBracket !== false

src/Standards/PSR1/Tests/Files/SideEffectsUnitTest.16.inc

@@ -1,2 +1,2 @@
 <?php
-$my?->defined('MINSIZE') or define("MAXSIZE", 100);
+$my?->defined('MINSIZE') or \define("MAXSIZE", 100);

src/Standards/PSR1/Tests/Files/SideEffectsUnitTest.17.inc

@@ -1,8 +1,8 @@
 <?php
 // phpcs:disable PSR1.Files.SideEffects.FoundWithSymbols
-define("MAXSIZE", 100);
+\define("MAXSIZE", 100);
 // phpcs:enable
 $defined = true;
-if (defined('MINSIZE') === false) {
+if (\defined('MINSIZE') === false) {
     $defined = false;
 }