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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 |
---|---|
4343 | $sani_mime_type = preg_replace( '/[^-+*.a-zA-Z0-9\/]/', '', $mime_type ); |
4344 | /** |
4345 | * Filter a mime type following sanitization. |
4346 | * |
4347 | * @since 3.1.3 |
4348 | * |
4349 | * @param string $sani_mime_type The sanitized mime type. |
4350 | * @param string $mime_type The mime type prior to sanitization. |
4351 | */ |
4352 | return apply_filters( 'sanitize_mime_type', $sani_mime_type, $mime_type ); |
4353 | } |
4354 |
|
4355 | /** |
4356 | * Sanitize space or carriage return separated URLs that are used to send trackbacks. |
4357 | * |
4358 | * @since 3.4.0 |
4359 | * |
4360 | * @param string $to_ping Space or carriage return separated URLs |
4361 | * @return string URLs starting with the http or https protocol, separated by a carriage return. |