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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 |
---|---|
1764 | $special_chars = array("?", "[", "]", "/", "\\", "=", "<", ">", ":", ";", ",", "'", "\"", "&", "$", "#", "*", "(", ")", "|", "~", "`", "!", "{", "}", "%", "+", chr(0)); |
1765 | /** |
1766 | * Filters the list of characters to remove from a filename. |
1767 | * |
1768 | * @since 2.8.0 |
1769 | * |
1770 | * @param array $special_chars Characters to remove. |
1771 | * @param string $filename_raw Filename as it was passed into sanitize_file_name(). |
1772 | */ |
1773 | $special_chars = apply_filters( 'sanitize_file_name_chars', $special_chars, $filename_raw ); |
1774 | $filename = preg_replace( "#\x{00a0}#siu", ' ', $filename ); |
1775 | $filename = str_replace( $special_chars, '', $filename ); |
1776 | $filename = str_replace( array( '%20', '+' ), '-', $filename ); |
1777 | $filename = preg_replace( '/[\r\n\t -]+/', '-', $filename ); |
1778 | $filename = trim( $filename, '.-_' ); |
1779 |
|
1780 | if ( false === strpos( $filename, '.' ) ) { |
1781 | $mime_types = wp_get_mime_types(); |
1782 | $filetype = wp_check_filetype( 'test.' . $filename, $mime_types ); |