wp_get_attachment_image_sizes() – Function

wp_get_attachment_image_sizes( int $attachment_id, string|int[] $size = ‘medium’, array|null $image_meta = null ): string|false

Retrieves the value for an image attachment’s ‘sizes’ attribute.

Description

Parameters

$attachment_idintrequired: Image attachment ID.
$sizestring|int[]optional: Image size. Accepts any registered image size name, or an array of width and height values in pixels (in that order). Default 'medium'.
Default:'medium'
$image_metaarray|nulloptional: The image meta data as returned by ‘wp_get_attachment_metadata() ‘.

Default:null

Return

string|false A valid source size value for use in a 'sizes' attribute or false.

Source

	}

	$srcset = '';

	foreach ( $sources as $source ) {
		$srcset .= str_replace( ' ', '%20', $source['url'] ) . ' ' . $source['value'] . $source['descriptor'] . ', ';
	}

	return rtrim( $srcset, ', ' );
}

/**
 * Retrieves the value for an image attachment's 'sizes' attribute.
 *
 * @since 4.4.0
 *
 * @see wp_calculate_image_sizes()
 *
 * @param int          $attachment_id Image attachment ID.

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Changelog

Version	Description
4.4.0	Introduced.

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