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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 |
---|---|
481 | * Fires for each custom column in the Media list table. |
482 | * |
483 | * Custom columns are registered using the 'manage_media_columns' filter. |
484 | * |
485 | * @since 2.5.0 |
486 | * |
487 | * @param string $column_name Name of the custom column. |
488 | * @param int $post_id Attachment ID. |
489 | */ |
490 | do_action( 'manage_media_custom_column', $column_name, $post->ID ); |
491 | ?></td> |
492 | <?php |
493 | break; |
494 | } |
495 | } |
496 | ?> |
497 | </tr> |
498 | <?php endwhile; |
499 | } |