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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 |
---|---|
1772 |
|
1773 | /** |
1774 | * Filters the default media display states for items in the Media list table. |
1775 | * |
1776 | * @since 3.2.0 |
1777 | * |
1778 | * @param array $media_states An array of media states. Default 'Header Image', |
1779 | * 'Background Image', 'Site Icon', 'Logo'. |
1780 | */ |
1781 | $media_states = apply_filters( 'display_media_states', $media_states ); |
1782 |
|
1783 | if ( ! empty( $media_states ) ) { |
1784 | $state_count = count( $media_states ); |
1785 | $i = 0; |
1786 | echo ' — '; |
1787 | foreach ( $media_states as $state ) { |
1788 | ++$i; |
1789 | ( $i == $state_count ) ? $sep = '' : $sep = ', '; |
1790 | echo "<span class='post-state'>$state$sep</span>"; |