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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 |
|---|---|
| 1191 | function image_size_input_fields( $post, $check = '' ) { |
| 1192 | /** |
| 1193 | * Filters the names and labels of the default image sizes. |
| 1194 | * |
| 1195 | * @since 3.3.0 |
| 1196 | * |
| 1197 | * @param string[] $size_names Array of image size labels keyed by their name. Default values |
| 1198 | * include 'Thumbnail', 'Medium', 'Large', and 'Full Size'. |
| 1199 | */ |
| 1200 | $size_names = apply_filters( |
| 1201 | 'image_size_names_choose', |
| 1202 | array( |
| 1203 | 'thumbnail' => __( 'Thumbnail' ), |
| 1204 | 'medium' => __( 'Medium' ), |
| 1205 | 'large' => __( 'Large' ), |
| 1206 | 'full' => __( 'Full Size' ), |
| 1207 | ) |
| 1208 | ); |
| 1209 | |