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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 |
|---|---|
| 308 | /** |
| 309 | * Determines the language to use for CodePress syntax highlighting, |
| 310 | * based only on a filename. |
| 311 | * |
| 312 | * @since 2.8 |
| 313 | * |
| 314 | * @param string $filename The name of the file to be highlighting |
| 315 | **/ |
| 316 | function codepress_get_lang( $filename ) { |
| 317 | $codepress_supported_langs = apply_filters( 'codepress_supported_langs', |
| 318 | array( '.css' => 'css', |
| 319 | '.js' => 'javascript', |
| 320 | '.php' => 'php', |
| 321 | '.html' => 'html', |
| 322 | '.htm' => 'html', |
| 323 | '.txt' => 'text' |
| 324 | ) ); |
| 325 | $extension = substr( $filename, strrpos( $filename, '.' ) ); |
| 326 | if ( $extension && array_key_exists( $extension, $codepress_supported_langs ) ) |