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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 |
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385 | * |
386 | * @since 2.6.0 |
387 | * |
388 | * @param string $class CSS class name or space-separated list of classes. |
389 | * @param int $id Attachment ID. |
390 | * @param string $align Part of the class name for aligning the image. |
391 | * @param string|int[] $size Requested image size. Can be any registered image size name, or |
392 | * an array of width and height values in pixels (in that order). |
393 | */ |
394 | $class = apply_filters( 'get_image_tag_class', $class, $id, $align, $size ); |
395 |
|
396 | $html = '<img src="' . esc_attr( $img_src ) . '" alt="' . esc_attr( $alt ) . '" ' . $title . $hwstring . 'class="' . $class . '" />'; |
397 |
|
398 | /** |
399 | * Filters the HTML content for the image tag. |
400 | * |
401 | * @since 2.6.0 |
402 | * |
403 | * @param string $html HTML content for the image. |