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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 |
|---|---|
| 2014 | |
| 2015 | /** |
| 2016 | * Filters the list of characters to remove from a filename. |
| 2017 | * |
| 2018 | * @since 2.8.0 |
| 2019 | * |
| 2020 | * @param string[] $special_chars Array of characters to remove. |
| 2021 | * @param string $filename_raw The original filename to be sanitized. |
| 2022 | */ |
| 2023 | $special_chars = apply_filters( 'sanitize_file_name_chars', $special_chars, $filename_raw ); |
| 2024 | |
| 2025 | $filename = str_replace( $special_chars, '', $filename ); |
| 2026 | $filename = str_replace( array( '%20', '+' ), '-', $filename ); |
| 2027 | $filename = preg_replace( '/[\r\n\t -]+/', '-', $filename ); |
| 2028 | $filename = trim( $filename, '.-_' ); |
| 2029 | |
| 2030 | if ( false === strpos( $filename, '.' ) ) { |
| 2031 | $mime_types = wp_get_mime_types(); |
| 2032 | $filetype = wp_check_filetype( 'test.' . $filename, $mime_types ); |