Use PHP 7 '??' operator instead of if-then-else

Change-Id: Ia86f8433f30a166d38ee63d0d1745b26740767b9

includes/libs/rdbms/database/Database.php

@@ -2038,10 +2038,7 @@ abstract class Database implements IDatabase, IMaintainableDatabase, LoggerAware
 			$options = [ $options ];
 		}
 
-		$fh = null;
-		if ( isset( $options['fileHandle'] ) ) {
-			$fh = $options['fileHandle'];
-		}
+		$fh = $options['fileHandle'] ?? null;
 		$options = $this->makeInsertOptions( $options );
 
 		if ( isset( $a[0] ) && is_array( $a[0] ) ) {

languages/ConverterRule.php

@@ -399,11 +399,7 @@ class ConverterRule {
 				case 'N':
 					// process N flag: output current variant name
 					$ruleVar = trim( $rules );
-					if ( isset( $this->mConverter->mVariantNames[$ruleVar] ) ) {
-						$this->mRuleDisplay = $this->mConverter->mVariantNames[$ruleVar];
-					} else {
-						$this->mRuleDisplay = '';
-					}
+					$this->mRuleDisplay = $this->mConverter->mVariantNames[$ruleVar] ?? '';
 					break;
 				case 'D':
 					// process D flag: output rules description

languages/Language.php

@@ -3227,12 +3227,8 @@ class Language {
 			$this->doMagicHook();
 		}
 
-		if ( isset( $this->mMagicExtensions[$mw->mId] ) ) {
-			$rawEntry = $this->mMagicExtensions[$mw->mId];
-		} else {
-			$rawEntry = self::$dataCache->getSubitem(
-				$this->mCode, 'magicWords', $mw->mId );
-		}
+		$rawEntry = $this->mMagicExtensions[$mw->mId] ??
+			self::$dataCache->getSubitem( $this->mCode, 'magicWords', $mw->mId );
 
 		if ( !is_array( $rawEntry ) ) {
 			wfWarn( "\"$rawEntry\" is not a valid magic word for \"$mw->mId\"" );
@@ -5063,10 +5059,6 @@ class Language {
 	public function getPluralRuleType( $number ) {
 		$index = $this->getPluralRuleIndexNumber( $number );
 		$pluralRuleTypes = $this->getPluralRuleTypes();
-		if ( isset( $pluralRuleTypes[$index] ) ) {
-			return $pluralRuleTypes[$index];
-		} else {
-			return 'other';
-		}
+		return $pluralRuleTypes[$index] ?? 'other';
 	}
 }

languages/LanguageCode.php

@@ -163,10 +163,7 @@ class LanguageCode {
 	 * @since 1.30
 	 */
 	public static function replaceDeprecatedCodes( $code ) {
-		if ( isset( self::$deprecatedLanguageCodeMapping[$code] ) ) {
-			return self::$deprecatedLanguageCodeMapping[$code];
-		}
-		return $code;
+		return self::$deprecatedLanguageCodeMapping[$code] ?? $code;
 	}
 
 	/**

languages/LanguageConverter.php

@@ -140,10 +140,7 @@ class LanguageConverter {
 	 *   main code if there is no fallback
 	 */
 	public function getVariantFallbacks( $variant ) {
-		if ( isset( $this->mVariantFallbacks[$variant] ) ) {
-			return $this->mVariantFallbacks[$variant];
-		}
-		return $this->mMainLanguageCode;
+		return $this->mVariantFallbacks[$variant] ?? $this->mMainLanguageCode;
 	}
 
 	/**

maintenance/language/generateCollationData.php

@@ -247,11 +247,7 @@ class GenerateCollationData extends Maintenance {
 			if ( $weight !== $prevWeight ) {
 				$this->groups[$prevWeight] = $group;
 				$prevWeight = $weight;
-				if ( isset( $this->groups[$weight] ) ) {
-					$group = $this->groups[$weight];
-				} else {
-					$group = [];
-				}
+				$group = $this->groups[$weight] ?? [];
 			}
 			$group[] = $cp;
 		}

maintenance/storage/checkStorage.php

@@ -29,11 +29,7 @@ if ( !defined( 'MEDIAWIKI' ) ) {
 
 	$cs = new CheckStorage;
 	$fix = isset( $options['fix'] );
-	if ( isset( $args[0] ) ) {
-		$xml = $args[0];
-	} else {
-		$xml = false;
-	}
+	$xml = $args[0] ?? false;
 	$cs->check( $fix, $xml );
 }
 

maintenance/storage/fixT22757.php

@@ -255,11 +255,7 @@ class FixT22757 extends Maintenance {
 
 	function findTextIdInPage( $pageId, $textId ) {
 		$ids = $this->getRevTextMap( $pageId );
-		if ( !isset( $ids[$textId] ) ) {
-			return null;
-		} else {
-			return $ids[$textId];
-		}
+		return $ids[$textId] ?? null;
 	}
 
 	function getRevTextMap( $pageId ) {

maintenance/storage/moveToExternal.php

@@ -38,11 +38,7 @@ if ( !defined( 'MEDIAWIKI' ) ) {
 	$cluster = $args[0];
 	$dbw = wfGetDB( DB_MASTER );
 
-	if ( isset( $options['e'] ) ) {
-		$maxID = $options['e'];
-	} else {
-		$maxID = $dbw->selectField( 'text', 'MAX(old_id)', '', $fname );
-	}
+	$maxID = $options['e'] ?? $dbw->selectField( 'text', 'MAX(old_id)', '', $fname );
 	$minID = $options['s'] ?? 1;
 
 	moveToExternal( $cluster, $maxID, $minID );

maintenance/updateCollation.php

@@ -304,11 +304,7 @@ TEXT
 			if ( $raw !== '' ) {
 				$raw .= ', ';
 			}
-			if ( !isset( $this->sizeHistogram[$i] ) ) {
-				$val = 0;
-			} else {
-				$val = $this->sizeHistogram[$i];
-			}
+			$val = $this->sizeHistogram[$i] ?? 0;
 			for ( $coarseIndex = 0; $coarseIndex < $numBins - 1; $coarseIndex++ ) {
 				if ( $coarseBoundaries[$coarseIndex] > $i ) {
 					$coarseHistogram[$coarseIndex] += $val;
@@ -327,11 +323,7 @@ TEXT
 		$scale = 60 / $maxBinVal;
 		$prevBoundary = 0;
 		for ( $coarseIndex = 0; $coarseIndex < $numBins; $coarseIndex++ ) {
-			if ( !isset( $coarseHistogram[$coarseIndex] ) ) {
-				$val = 0;
-			} else {
-				$val = $coarseHistogram[$coarseIndex];
-			}
+			$val = $coarseHistogram[$coarseIndex] ?? 0;
 			$boundary = $coarseBoundaries[$coarseIndex];
 			$this->output( sprintf( "%-10s %-10d |%s\n",
 				$prevBoundary . '-' . ( $boundary - 1 ) . ': ',

profileinfo.php

@@ -338,11 +338,7 @@ $res = $dbr->select(
 	[ 'ORDER BY' => 'pf_name ASC' ]
 );
 
-if ( isset( $_REQUEST['filter'] ) ) {
-	$filter = $_REQUEST['filter'];
-} else {
-	$filter = '';
-}
+$filter = $_REQUEST['filter'] ?? '';
 
 ?>
 <form method="get" action="profileinfo.php">

tests/common/TestsAutoLoader.php

@@ -230,11 +230,7 @@ spl_autoload_register( function ( $class ) {
 		'PHPUnit_Framework_Error' => 'PHPUnit\Framework\Error\Error',
 	];
 
-	if ( isset( $map[$class] ) ) {
-		$newForm = $map[$class];
-	} else {
-		$newForm = str_replace( '_', '\\', $class );
-	}
+	$newForm = $map[$class] ?? str_replace( '_', '\\', $class );
 
 	if ( class_exists( $newForm ) || interface_exists( $newForm ) ) {
 		// If the new class name exists, alias

tests/parser/ParserTestParserHook.php

@@ -49,11 +49,7 @@ class ParserTestParserHook {
 			&& $argv['action'] === 'flush' && $in === null
 		) {
 			// Clear the buffer, we probably don't need to
-			if ( isset( $parser->static_tag_buf ) ) {
-				$tmp = $parser->static_tag_buf;
-			} else {
-				$tmp = '';
-			}
+			$tmp = $parser->static_tag_buf ?? '';
 			$parser->static_tag_buf = null;
 			return $tmp;
 		} else { // wtf?