Source View: pre_{$field}

To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).

Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: 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.

Source View

Line Code
1965                 * Filter the value of a specific post field before saving.
1966                 *
1967                 * The dynamic portion of the hook name, `$field`, refers to the post
1968                 * field name.
1969                 *
1970                 * @since 2.3.0
1971                 *
1972                 * @param mixed $value Value of the post field.
1973                 */
1974                $value = apply_filters( "pre_{$field}", $value );
1975
1976                /**
1977                 * Filter the value of a specific field before saving.
1978                 *
1979                 * The dynamic portion of the hook name, `$field_no_prefix`, refers
1980                 * to the post field name.
1981                 *
1982                 * @since 2.3.0
1983                 *