remove remaining instances of empty()

(cherry picked from commit 2b7c9b7)

Author: codemasher

src/Common/GenericGFPoly.php

@@ -38,7 +38,7 @@ final class GenericGFPoly{
 	public function __construct(array $coefficients, ?int $degree = null){
 		$degree ??= 0;
 
-		if(empty($coefficients)){
+		if($coefficients === []){
 			throw new QRCodeException('arg $coefficients is empty');
 		}
 

src/Decoder/DecoderResult.php

@@ -46,7 +46,7 @@ final class DecoderResult{
 	 */
 	public function __construct(?iterable $properties = null){
 
-		if(!empty($properties)){
+		if($properties !== null){
 
 			foreach($properties as $property => $value){
 

src/Detector/Detector.php

@@ -56,7 +56,7 @@ public function detect():BitMatrix{
 		$alignmentPattern   = null;
 
 		// Anything above version 1 has an alignment pattern
-		if(!empty($provisionalVersion->getAlignmentPattern())){
+		if($provisionalVersion->getAlignmentPattern() !== []){
 			// Guess where a "bottom right" finder pattern would have been
 			$bottomRightX = ($topRight->getX() - $topLeft->getX() + $bottomLeft->getX());
 			$bottomRightY = ($topRight->getY() - $topLeft->getY() + $bottomLeft->getY());

src/Output/QREps.php

@@ -134,7 +134,7 @@ public function dump(?string $file = null):string{
 
 		foreach($paths as $M_TYPE => $path){
 
-			if(empty($path)){
+			if($path === []){
 				continue;
 			}
 

src/Output/QRMarkupSVG.php

@@ -74,7 +74,7 @@ protected function getCssClass(int $M_TYPE = 0):string{
 	protected function createMarkup(bool $saveToFile):string{
 		$svg = $this->header();
 
-		if(!empty($this->options->svgDefs)){
+		if($this->options->svgDefs !== ''){
 			$svg .= sprintf('<defs>%1$s%2$s</defs>%2$s', $this->options->svgDefs, $this->eol);
 		}
 
@@ -144,7 +144,7 @@ protected function paths():string{
 
 			$path = implode($this->eol, $chonks);
 
-			if(empty($path)){
+			if($path === ''){
 				continue;
 			}