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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 2079 | } |
| 2080 | } |
| 2081 | |
| 2082 | // Split the filename into a base and extension[s]. |
| 2083 | $parts = explode( '.', $filename ); |
| 2084 | |
| 2085 | // Return if only one extension. |
| 2086 | if ( count( $parts ) <= 2 ) { |
| 2087 | /** This filter is documented in wp-includes/formatting.php */ |
| 2088 | return apply_filters( 'sanitize_file_name', $filename, $filename_raw ); |
| 2089 | } |
| 2090 | |
| 2091 | // Process multiple extensions. |
| 2092 | $filename = array_shift( $parts ); |
| 2093 | $extension = array_pop( $parts ); |
| 2094 | $mimes = get_allowed_mime_types(); |
| 2095 | |
| 2096 | /* |
| 2097 | * Loop over any intermediate extensions. Postfix them with a trailing underscore |
| Line | Code |
| 2119 | |
| 2120 | /** |
| 2121 | * Filters a sanitized filename string. |
| 2122 | * |
| 2123 | * @since 2.8.0 |
| 2124 | * |
| 2125 | * @param string $filename Sanitized filename. |
| 2126 | * @param string $filename_raw The filename prior to sanitization. |
| 2127 | */ |
| 2128 | return apply_filters( 'sanitize_file_name', $filename, $filename_raw ); |
| 2129 | } |
| 2130 | |
| 2131 | /** |
| 2132 | * Sanitizes a username, stripping out unsafe characters. |
| 2133 | * |
| 2134 | * Removes tags, percent-encoded characters, HTML entities, and if strict is enabled, |
| 2135 | * will only keep alphanumeric, _, space, ., -, @. After sanitizing, it passes the username, |
| 2136 | * raw username (the username in the parameter), and the value of $strict as parameters |
| 2137 | * for the {@see 'sanitize_user'} filter. |