phpcs: Fix some "Assignment expression not allowed"

Found by new version of mediawiki/codesniffer
https://integration.wikimedia.org/ci/job/mediawiki-core-phpcs/1939/consoleFull

Change-Id: I673f71fd0dfc8d6ba1ce6c3d5da21787ff95cb32

includes/Sanitizer.php

@@ -476,7 +476,8 @@ class Sanitizer {
 				}
 
 				$badtag = false;
-				if ( isset( $htmlelements[$t = strtolower( $t )] ) ) {
+				$t = strtolower( $t );
+				if ( isset( $htmlelements[$t] ) ) {
 					# Check our stack
 					if ( $slash && isset( $htmlsingleonly[$t] ) ) {
 						$badtag = true;
@@ -596,7 +597,8 @@ class Sanitizer {
 					list( /* $qbar */, $slash, $t, $params, $brace, $rest ) = $regs;
 
 					$badtag = false;
-					if ( isset( $htmlelements[$t = strtolower( $t )] ) ) {
+					$t = strtolower( $t );
+					if ( isset( $htmlelements[$t] ) ) {
 						if ( is_callable( $processCallback ) ) {
 							call_user_func_array( $processCallback, array( &$params, $args ) );
 						}

includes/resourceloader/ResourceLoader.php

@@ -708,8 +708,11 @@ class ResourceLoader implements LoggerAwareInterface {
 
 		// Capture any PHP warnings from the output buffer and append them to the
 		// error list if we're in debug mode.
-		if ( $context->getDebug() && strlen( $warnings = ob_get_contents() ) ) {
-			$this->errors[] = $warnings;
+		if ( $context->getDebug() ) {
+			$warnings = ob_get_contents();
+			if ( strlen( $warnings ) ) {
+				$this->errors[] = $warnings;
+			}
 		}
 
 		// Save response to file cache unless there are errors
@@ -877,8 +880,11 @@ class ResourceLoader implements LoggerAwareInterface {
 			$response = $fileCache->fetchText();
 			// Capture any PHP warnings from the output buffer and append them to the
 			// response in a comment if we're in debug mode.
-			if ( $context->getDebug() && strlen( $warnings = ob_get_contents() ) ) {
-				$response = self::makeComment( $warnings ) . $response;
+			if ( $context->getDebug() ) {
+				$warnings = ob_get_contents();
+				if ( strlen( $warnings ) ) {
+					$response = self::makeComment( $warnings ) . $response;
+				}
 			}
 			// Remove the output buffer and output the response
 			ob_end_clean();

includes/specials/SpecialContributions.php

@@ -107,7 +107,8 @@ class SpecialContributions extends IncludableSpecialPage {
 			)->inContentLanguage() );
 		}
 
-		if ( ( $ns = $request->getVal( 'namespace', null ) ) !== null && $ns !== '' ) {
+		$ns = $request->getVal( 'namespace', null );
+		if ( $ns !== null && $ns !== '' ) {
 			$this->opts['namespace'] = intval( $ns );
 		} else {
 			$this->opts['namespace'] = '';

includes/specials/SpecialDeletedContributions.php

@@ -413,7 +413,8 @@ class DeletedContributionsPage extends SpecialPage {
 		$target = $userObj->getName();
 		$out->addSubtitle( $this->getSubTitle( $userObj ) );
 
-		if ( ( $ns = $request->getVal( 'namespace', null ) ) !== null && $ns !== '' ) {
+		$ns = $request->getVal( 'namespace', null );
+		if ( $ns !== null && $ns !== '' ) {
 			$options['namespace'] = intval( $ns );
 		} else {
 			$options['namespace'] = '';

includes/title/MediaWikiTitleCodec.php

@@ -255,7 +255,8 @@ class MediaWikiTitleCodec implements TitleFormatter, TitleParser {
 			$m = array();
 			if ( preg_match( $prefixRegexp, $dbkey, $m ) ) {
 				$p = $m[1];
-				if ( ( $ns = $this->language->getNsIndex( $p ) ) !== false ) {
+				$ns = $this->language->getNsIndex( $p );
+				if ( $ns !== false ) {
 					# Ordinary namespace
 					$dbkey = $m[2];
 					$parts['namespace'] = $ns;

includes/utils/MWCryptRand.php

@@ -97,7 +97,8 @@ class MWCryptRand {
 					}
 				}
 				// The absolute filename itself will differ from install to install so don't leave it out
-				if ( ( $path = realpath( $file ) ) !== false ) {
+				$path = realpath( $file );
+				if ( $path !== false ) {
 					$state .= $path;
 				} else {
 					$state .= $file;

maintenance/importDump.php

@@ -119,7 +119,8 @@ TEXT;
 
 	private function getNsIndex( $namespace ) {
 		global $wgContLang;
-		if ( ( $result = $wgContLang->getNsIndex( $namespace ) ) !== false ) {
+		$result = $wgContLang->getNsIndex( $namespace );
+		if ( $result !== false ) {
 			return $result;
 		}
 		$ns = intval( $namespace );