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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 |
|---|---|
| 118 | $editable_extensions = array('php', 'txt', 'text', 'js', 'css', 'html', 'htm', 'xml', 'inc', 'include'); |
| 119 | |
| 120 | /** |
| 121 | * Filters file type extensions editable in the plugin editor. |
| 122 | * |
| 123 | * @since 2.8.0 |
| 124 | * |
| 125 | * @param array $editable_extensions An array of editable plugin file extensions. |
| 126 | */ |
| 127 | $editable_extensions = (array) apply_filters( 'editable_extensions', $editable_extensions ); |
| 128 | |
| 129 | if ( ! is_file($real_file) ) { |
| 130 | wp_die(sprintf('<p>%s</p>', __('No such file exists! Double check the name and try again.'))); |
| 131 | } else { |
| 132 | // Get the extension of the file |
| 133 | if ( preg_match('/\.([^.]+)$/', $real_file, $matches) ) { |
| 134 | $ext = strtolower($matches[1]); |
| 135 | // If extension is not in the acceptable list, skip it |
| 136 | if ( !in_array( $ext, $editable_extensions) ) |