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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 |
---|---|
2007 | $special_chars = array( '?', '[', ']', '/', '\\', '=', '<', '>', ':', ';', ',', "'", '"', '&', '$', '#', '*', '(', ')', '|', '~', '`', '!', '{', '}', '%', '+', chr( 0 ) ); |
2008 | /** |
2009 | * Filters the list of characters to remove from a filename. |
2010 | * |
2011 | * @since 2.8.0 |
2012 | * |
2013 | * @param string[] $special_chars Array of characters to remove. |
2014 | * @param string $filename_raw The original filename to be sanitized. |
2015 | */ |
2016 | $special_chars = apply_filters( 'sanitize_file_name_chars', $special_chars, $filename_raw ); |
2017 | $filename = preg_replace( "#\x{00a0}#siu", ' ', $filename ); |
2018 | $filename = str_replace( $special_chars, '', $filename ); |
2019 | $filename = str_replace( array( '%20', '+' ), '-', $filename ); |
2020 | $filename = preg_replace( '/[\r\n\t -]+/', '-', $filename ); |
2021 | $filename = trim( $filename, '.-_' ); |
2022 |
|
2023 | if ( false === strpos( $filename, '.' ) ) { |
2024 | $mime_types = wp_get_mime_types(); |
2025 | $filetype = wp_check_filetype( 'test.' . $filename, $mime_types ); |