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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 |
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77 | $categories = array(); |
78 |
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79 | $categories = array_values( $categories ); |
80 |
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81 | foreach ( array_keys( $categories ) as $key ) { |
82 | _make_cat_compat( $categories[$key] ); |
83 | } |
84 |
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85 | // Filter name is plural because we return alot of categories (possibly more than #13237) not just one |
86 | return apply_filters( 'get_the_categories', $categories ); |
87 | } |
88 |
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89 | /** |
90 | * Sort categories by name. |
91 | * |
92 | * Used by usort() as a callback, should not be used directly. Can actually be |
93 | * used to sort any term object. |
94 | * |
95 | * @since 2.3.0 |