61436 wp get loading optimization attributes with src

src/wp-includes/media.php

@@ -1969,6 +1969,7 @@ function wp_filter_content_tags( $content, $context = null ) {
  * @return string Converted `img` tag with optimization attributes added.
  */
 function wp_img_tag_add_loading_optimization_attrs( $image, $context ) {
+	$src               = preg_match( '/ src=["\']?([^"\']*)/i', $image, $matche_src ) ? $matche_src[1] : null;
 	$width             = preg_match( '/ width=["\']([0-9]+)["\']/', $image, $match_width ) ? (int) $match_width[1] : null;
 	$height            = preg_match( '/ height=["\']([0-9]+)["\']/', $image, $match_height ) ? (int) $match_height[1] : null;
 	$loading_val       = preg_match( '/ loading=["\']([A-Za-z]+)["\']/', $image, $match_loading ) ? $match_loading[1] : null;
@@ -1983,6 +1984,7 @@ function wp_img_tag_add_loading_optimization_attrs( $image, $context ) {
 	$optimization_attrs = wp_get_loading_optimization_attributes(
 		'img',
 		array(
+			'src'           => $src,
 			'width'         => $width,
 			'height'        => $height,
 			'loading'       => $loading_val,

tests/phpunit/tests/media.php

@@ -5553,6 +5553,42 @@ public function test_wp_get_loading_optimization_attributes_if_loading_attr_pres
 		);
 	}
 
+	/**
+	 * @ticket 61436
+	 *
+	 * @covers ::wp_get_loading_optimization_attributes
+	 */
+	public function test_wp_get_loading_optimization_attributes_image_src_matched() {
+		add_filter(
+			'wp_get_loading_optimization_attributes',
+			static function ( $loading_attrs, $tag_name, $attr ) {
+				if (
+					'img' === $tag_name &&
+					isset( $attr['src'] ) &&
+					'https://example.org/a-specific-image.jpg' === $attr['src']
+				) {
+					$loading_attrs['fetchpriority'] = 'high';
+				}
+				return $loading_attrs;
+			},
+			10,
+			3
+		);
+		$attr = array(
+			'src' => 'https://example.org/a-specific-image.jpg',
+		);
+
+		// fetchpriority is high when image src is matched.
+		$this->assertSameSetsWithIndex(
+			array(
+				'decoding'      => 'async',
+				'fetchpriority' => 'high',
+			),
+			wp_get_loading_optimization_attributes( 'img', $attr, 'the_content' ),
+			'fetchpriority should be high when src is matched.'
+		);
+	}
+
 	/**
 	 * @ticket 58235
 	 *