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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 |
---|---|
536 | <?php |
537 | /** This action is documented in wp-admin/admin-header.php */ |
538 | do_action( 'admin_enqueue_scripts', 'media-upload-popup' ); |
539 |
|
540 | /** |
541 | * Fires when admin styles enqueued for the legacy (pre-3.5.0) media upload popup are printed. |
542 | * |
543 | * @since 2.9.0 |
544 | */ |
545 | do_action( 'admin_print_styles-media-upload-popup' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores |
546 |
|
547 | /** This action is documented in wp-admin/admin-header.php */ |
548 | do_action( 'admin_print_styles' ); |
549 |
|
550 | /** |
551 | * Fires when admin scripts enqueued for the legacy (pre-3.5.0) media upload popup are printed. |
552 | * |
553 | * @since 2.9.0 |
554 | */ |