WP hooks navigation: Home/browse • Actions index • Filters index
To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 3580 | $fp = fopen( $file, 'r' ); |
| 3581 | |
| 3582 | // Pull only the first 8kiB of the file in. |
| 3583 | $file_data = fread( $fp, 8192 ); |
| 3584 | |
| 3585 | // PHP will close file handle, but we are good citizens. |
| 3586 | fclose( $fp ); |
| 3587 | |
| 3588 | if( $context != '' ) { |
| 3589 | $extra_headers = apply_filters( "extra_$context".'_headers', array() ); |
| 3590 | |
| 3591 | $extra_headers = array_flip( $extra_headers ); |
| 3592 | foreach( $extra_headers as $key=>$value ) { |
| 3593 | $extra_headers[$key] = $key; |
| 3594 | } |
| 3595 | $all_headers = array_merge($extra_headers, $default_headers); |
| 3596 | } else { |
| 3597 | $all_headers = $default_headers; |
| 3598 | } |