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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 379 | * |
| 380 | * @since 2.6.0 |
| 381 | * |
| 382 | * @param string $class CSS class name or space-separated list of classes. |
| 383 | * @param int $id Attachment ID. |
| 384 | * @param string $align Part of the class name for aligning the image. |
| 385 | * @param string|array $size Size of image. Image size or array of width and height values (in that order). |
| 386 | * Default 'medium'. |
| 387 | */ |
| 388 | $class = apply_filters( 'get_image_tag_class', $class, $id, $align, $size ); |
| 389 | |
| 390 | $html = '<img src="' . esc_attr( $img_src ) . '" alt="' . esc_attr( $alt ) . '" ' . $title . $hwstring . 'class="' . $class . '" />'; |
| 391 | |
| 392 | /** |
| 393 | * Filters the HTML content for the image tag. |
| 394 | * |
| 395 | * @since 2.6.0 |
| 396 | * |
| 397 | * @param string $html HTML content for the image. |