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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 |
|---|---|
| 210 | if ( is_dir( $dir ) && WP_PLUGIN_DIR !== $dir ) { |
| 211 | |
| 212 | /** |
| 213 | * Filters the array of excluded directories and files while scanning the folder. |
| 214 | * |
| 215 | * @since 4.9.0 |
| 216 | * |
| 217 | * @param array $exclusions Array of excluded directories and files. |
| 218 | */ |
| 219 | $exclusions = (array) apply_filters( 'plugin_files_exclusions', array( 'CVS', 'node_modules', 'vendor', 'bower_components' ) ); |
| 220 | |
| 221 | $list_files = list_files( $dir, 100, $exclusions ); |
| 222 | $list_files = array_map( 'plugin_basename', $list_files ); |
| 223 | |
| 224 | $plugin_files = array_merge( $plugin_files, $list_files ); |
| 225 | $plugin_files = array_values( array_unique( $plugin_files ) ); |
| 226 | } |
| 227 | |
| 228 | set_transient( $transient_key, $plugin_files, HOUR_IN_SECONDS ); |