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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 |
---|---|
5565 | $sani_mime_type = preg_replace( '/[^-+*.a-zA-Z0-9\/]/', '', $mime_type ); |
5566 | /** |
5567 | * Filters a mime type following sanitization. |
5568 | * |
5569 | * @since 3.1.3 |
5570 | * |
5571 | * @param string $sani_mime_type The sanitized mime type. |
5572 | * @param string $mime_type The mime type prior to sanitization. |
5573 | */ |
5574 | return apply_filters( 'sanitize_mime_type', $sani_mime_type, $mime_type ); |
5575 | } |
5576 |
|
5577 | /** |
5578 | * Sanitizes space or carriage return separated URLs that are used to send trackbacks. |
5579 | * |
5580 | * @since 3.4.0 |
5581 | * |
5582 | * @param string $to_ping Space or carriage return separated URLs |
5583 | * @return string URLs starting with the http or https protocol, separated by a carriage return. |