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wp_get_attachment_image › WordPress Function
Since2.5.0
Deprecatedn/a
› wp_get_attachment_image ( $attachment_id, $size = 'thumbnail', $icon = false, $attr = '' )
Parameters: (4) |
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Returns: |
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Defined at: |
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Gets an HTML img element representing an image attachment.
While$size
will accept an array, it is better to register a size with
add_image_size() so that a cropped version is generated. It's much more
efficient than having to find the closest-sized image and then having the
browser scale down the image.Source
function wp_get_attachment_image( $attachment_id, $size = 'thumbnail', $icon = false, $attr = '' ) { $html = ''; $image = wp_get_attachment_image_src( $attachment_id, $size, $icon ); if ( $image ) { list( $src, $width, $height ) = $image; $attachment = get_post( $attachment_id ); $hwstring = image_hwstring( $width, $height ); $size_class = $size; if ( is_array( $size_class ) ) { $size_class = implode( 'x', $size_class ); } $default_attr = array( 'src' => $src, 'class' => "attachment-$size_class size-$size_class", 'alt' => trim( strip_tags( get_post_meta( $attachment_id, '_wp_attachment_image_alt', true ) ) ), ); /** * Filters the context in which wp_get_attachment_image() is used. * * @since 6.3.0 * * @param string $context The context. Default 'wp_get_attachment_image'. */ $context = apply_filters( 'wp_get_attachment_image_context', 'wp_get_attachment_image' ); $attr = wp_parse_args( $attr, $default_attr ); $loading_attr = $attr; $loading_attr['width'] = $width; $loading_attr['height'] = $height; $loading_optimization_attr = wp_get_loading_optimization_attributes( 'img', $loading_attr, $context ); // Add loading optimization attributes if not available. $attr = array_merge( $attr, $loading_optimization_attr ); // Omit the `decoding` attribute if the value is invalid according to the spec. if ( empty( $attr['decoding'] ) || ! in_array( $attr['decoding'], array( 'async', 'sync', 'auto' ), true ) ) { unset( $attr['decoding'] ); } /* * If the default value of `lazy` for the `loading` attribute is overridden * to omit the attribute for this image, ensure it is not included. */ if ( isset( $attr['loading'] ) && ! $attr['loading'] ) { unset( $attr['loading'] ); } // If the `fetchpriority` attribute is overridden and set to false or an empty string. if ( isset( $attr['fetchpriority'] ) && ! $attr['fetchpriority'] ) { unset( $attr['fetchpriority'] ); } // Generate 'srcset' and 'sizes' if not already present. if ( empty( $attr['srcset'] ) ) { $image_meta = wp_get_attachment_metadata( $attachment_id ); if ( is_array( $image_meta ) ) { $size_array = array( absint( $width ), absint( $height ) ); $srcset = wp_calculate_image_srcset( $size_array, $src, $image_meta, $attachment_id ); $sizes = wp_calculate_image_sizes( $size_array, $src, $image_meta, $attachment_id ); if ( $srcset && ( $sizes || ! empty( $attr['sizes'] ) ) ) { $attr['srcset'] = $srcset; if ( empty( $attr['sizes'] ) ) { $attr['sizes'] = $sizes; } } } } // Adds 'auto' to the sizes attribute if applicable. if ( isset( $attr['loading'] ) && 'lazy' === $attr['loading'] && isset( $attr['sizes'] ) && ! wp_sizes_attribute_includes_valid_auto( $attr['sizes'] ) ) { $attr['sizes'] = 'auto, ' . $attr['sizes']; } /** * Filters the list of attachment image attributes. * * @since 2.8.0 * * @param string[] $attr Array of attribute values for the image markup, keyed by attribute name. * See wp_get_attachment_image(). * @param WP_Post $attachment Image attachment post. * @param string|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). */ $attr = apply_filters( 'wp_get_attachment_image_attributes', $attr, $attachment, $size ); $attr = array_map( 'esc_attr', $attr ); $html = rtrim( "<img $hwstring" ); foreach ( $attr as $name => $value ) { $html .= " $name=" . '"' . $value . '"'; } $html .= ' />'; } /** * Filters the HTML img element representing an image attachment. * * @since 5.6.0 * * @param string $html HTML img element or empty string on failure. * @param int $attachment_id Image attachment ID. * @param string|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). * @param bool $icon Whether the image should be treated as an icon. * @param string[] $attr Array of attribute values for the image markup, keyed by attribute name. * See wp_get_attachment_image(). */ return apply_filters( 'wp_get_attachment_image', $html, $attachment_id, $size, $icon, $attr ); }