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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 |
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4802 | $sani_mime_type = preg_replace( '/[^-+*.a-zA-Z0-9\/]/', '', $mime_type ); |
4803 | /** |
4804 | * Filters a mime type following sanitization. |
4805 | * |
4806 | * @since 3.1.3 |
4807 | * |
4808 | * @param string $sani_mime_type The sanitized mime type. |
4809 | * @param string $mime_type The mime type prior to sanitization. |
4810 | */ |
4811 | return apply_filters( 'sanitize_mime_type', $sani_mime_type, $mime_type ); |
4812 | } |
4813 |
|
4814 | /** |
4815 | * Sanitize space or carriage return separated URLs that are used to send trackbacks. |
4816 | * |
4817 | * @since 3.4.0 |
4818 | * |
4819 | * @param string $to_ping Space or carriage return separated URLs |
4820 | * @return string URLs starting with the http or https protocol, separated by a carriage return. |