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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 |
|---|---|
| 3343 | * Sanitize a mime type |
| 3344 | * |
| 3345 | * @since 3.1.3 |
| 3346 | * |
| 3347 | * @param string $mime_type Mime type |
| 3348 | * @return string Sanitized mime type |
| 3349 | */ |
| 3350 | function sanitize_mime_type( $mime_type ) { |
| 3351 | $sani_mime_type = preg_replace( '/[^-+*.a-zA-Z0-9\/]/', '', $mime_type ); |
| 3352 | return apply_filters( 'sanitize_mime_type', $sani_mime_type, $mime_type ); |
| 3353 | } |
| 3354 | |
| 3355 | /** |
| 3356 | * Sanitize space or carriage return separated URLs that are used to send trackbacks. |
| 3357 | * |
| 3358 | * @since 3.4.0 |
| 3359 | * |
| 3360 | * @param string $to_ping Space or carriage return separated URLs |
| 3361 | * @return string URLs starting with the http or https protocol, separated by a carriage return. |