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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 |
|---|---|
| 1989 | function get_space_allowed() { |
| 1990 | $space_allowed = get_option( 'blog_upload_space' ); |
| 1991 | |
| 1992 | if ( ! is_numeric( $space_allowed ) ) |
| 1993 | $space_allowed = get_site_option( 'blog_upload_space' ); |
| 1994 | |
| 1995 | if ( empty( $space_allowed ) || ! is_numeric( $space_allowed ) ) |
| 1996 | $space_allowed = 100; |
| 1997 | |
| 1998 | return apply_filters( 'get_space_allowed', $space_allowed ); |
| 1999 | } |
| 2000 | |
| 2001 | /** |
| 2002 | * Determines if there is any upload space left in the current blog's quota. |
| 2003 | * |
| 2004 | * @since 3.0.0 |
| 2005 | * |
| 2006 | * @return int of upload space available in bytes |
| 2007 | */ |