fixed php8 deprecation warning for libxml_disable_entity_loader() (#1625)

* fixed php8 deprecation warning for libxml_disable_entity_loader()

CHANGELOG.md

@@ -560,6 +560,7 @@ and this project adheres to [Semantic Versioning](https://semver.org).
 - Ignore inlineStr type if formula element exists - @ncrypthic [#570](https://github.com/PHPOffice/PHPExcel/issues/570)
 - Excel 2007 Reader freezes because of conditional formatting - @rentalhost [#575](https://github.com/PHPOffice/PHPExcel/issues/575)
 - Readers will now parse files containing worksheet titles over 31 characters [#176](https://github.com/PHPOffice/PhpSpreadsheet/pull/176)
+- Fixed PHP8 deprecation warning for libxml_disable_entity_loader() [#1625](https://github.com/phpoffice/phpspreadsheet/pull/1625) 
 
 ### General
 
@@ -581,4 +582,4 @@ For a comprehensive list of all class changes, and a semi-automated migration pa
 
 ## Previous versions of PHPExcel
 
-The changelog for the project when it was called PHPExcel is [still available](./CHANGELOG.PHPExcel.md).
+The changelog for the project when it was called PHPExcel is [still available](./CHANGELOG.PHPExcel.md).

src/PhpSpreadsheet/Reader/Security/XmlScanner.php

@@ -63,7 +63,7 @@ class XmlScanner
 
     private function disableEntityLoaderCheck(): void
     {
-        if (Settings::getLibXmlDisableEntityLoader()) {
+        if (Settings::getLibXmlDisableEntityLoader() && \PHP_VERSION_ID < 80000) {
             $libxmlDisableEntityLoaderValue = libxml_disable_entity_loader(true);
 
             if (self::$libxmlDisableEntityLoaderValue === null) {
@@ -74,7 +74,7 @@ class XmlScanner
 
     public static function shutdown(): void
     {
-        if (self::$libxmlDisableEntityLoaderValue !== null) {
+        if (self::$libxmlDisableEntityLoaderValue !== null && \PHP_VERSION_ID < 80000) {
             libxml_disable_entity_loader(self::$libxmlDisableEntityLoaderValue);
             self::$libxmlDisableEntityLoaderValue = null;
         }

tests/PhpSpreadsheetTests/Reader/Security/XmlScannerTest.php

@@ -12,7 +12,10 @@ class XmlScannerTest extends TestCase
 {
     protected function setUp(): void
     {
-        libxml_disable_entity_loader(false);
+        // php 8.+ deprecated libxml_disable_entity_loader() - It's on by default
+        if (\PHP_VERSION_ID < 80000) {
+            libxml_disable_entity_loader(false);
+        }
     }
 
     /**
@@ -24,13 +27,19 @@ class XmlScannerTest extends TestCase
      */
     public function testValidXML($filename, $expectedResult, $libxmlDisableEntityLoader): void
     {
-        $oldDisableEntityLoaderState = libxml_disable_entity_loader($libxmlDisableEntityLoader);
+        // php 8.+ deprecated libxml_disable_entity_loader() - It's on by default
+        if (\PHP_VERSION_ID < 80000) {
+            $oldDisableEntityLoaderState = libxml_disable_entity_loader($libxmlDisableEntityLoader);
+        }
 
         $reader = XmlScanner::getInstance(new \PhpOffice\PhpSpreadsheet\Reader\Xml());
         $result = $reader->scanFile($filename);
         self::assertEquals($expectedResult, $result);
 
-        libxml_disable_entity_loader($oldDisableEntityLoaderState);
+        // php 8.+ deprecated libxml_disable_entity_loader() - It's on by default
+        if (\PHP_VERSION_ID < 80000) {
+            libxml_disable_entity_loader($oldDisableEntityLoaderState);
+        }
     }
 
     public function providerValidXML()
@@ -56,13 +65,19 @@ class XmlScannerTest extends TestCase
     {
         $this->expectException(\PhpOffice\PhpSpreadsheet\Reader\Exception::class);
 
-        libxml_disable_entity_loader($libxmlDisableEntityLoader);
+        // php 8.+ deprecated libxml_disable_entity_loader() - It's on by default
+        if (\PHP_VERSION_ID < 80000) {
+            libxml_disable_entity_loader($libxmlDisableEntityLoader);
+        }
 
         $reader = XmlScanner::getInstance(new \PhpOffice\PhpSpreadsheet\Reader\Xml());
         $expectedResult = 'FAILURE: Should throw an Exception rather than return a value';
         $result = $reader->scanFile($filename);
         self::assertEquals($expectedResult, $result);
-        self::assertEquals($libxmlDisableEntityLoader, libxml_disable_entity_loader());
+        // php 8.+ deprecated libxml_disable_entity_loader() - It's on by default
+        if (\PHP_VERSION_ID < 80000) {
+            self::assertEquals($libxmlDisableEntityLoader, libxml_disable_entity_loader());
+        }
     }
 
     public function providerInvalidXML()

tests/PhpSpreadsheetTests/SettingsTest.php

@@ -14,20 +14,29 @@ class SettingsTest extends TestCase
 
     protected function setUp(): void
     {
-        $this->prevValue = libxml_disable_entity_loader();
+        // php 8.+ deprecated libxml_disable_entity_loader() - It's on by default
-        libxml_disable_entity_loader(false); // Enable entity loader
+        if (\PHP_VERSION_ID < 80000) {
+            $this->prevValue = libxml_disable_entity_loader();
+            libxml_disable_entity_loader(false); // Enable entity loader
+        }
     }
 
     protected function tearDown(): void
     {
-        libxml_disable_entity_loader($this->prevValue);
+        // php 8.+ deprecated libxml_disable_entity_loader() - It's on by default
+        if (\PHP_VERSION_ID < 80000) {
+            libxml_disable_entity_loader($this->prevValue);
+        }
     }
 
     public function testGetXMLSettings(): void
     {
         $result = Settings::getLibXmlLoaderOptions();
         self::assertTrue((bool) ((LIBXML_DTDLOAD | LIBXML_DTDATTR) & $result));
-        self::assertFalse(libxml_disable_entity_loader());
+        // php 8.+ deprecated libxml_disable_entity_loader() - It's on by default
+        if (\PHP_VERSION_ID < 80000) {
+            self::assertFalse(libxml_disable_entity_loader());
+        }
     }
 
     public function testSetXMLSettings(): void
@@ -35,6 +44,9 @@ class SettingsTest extends TestCase
         Settings::setLibXmlLoaderOptions(LIBXML_DTDLOAD | LIBXML_DTDATTR | LIBXML_DTDVALID);
         $result = Settings::getLibXmlLoaderOptions();
         self::assertTrue((bool) ((LIBXML_DTDLOAD | LIBXML_DTDATTR | LIBXML_DTDVALID) & $result));
-        self::assertFalse(libxml_disable_entity_loader());
+        // php 8.+ deprecated libxml_disable_entity_loader() - It's on by default
+        if (\PHP_VERSION_ID < 80000) {
+            self::assertFalse(libxml_disable_entity_loader());
+        }
     }
 }