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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 |
|---|---|
| 3279 | * Sanitize a mime type |
| 3280 | * |
| 3281 | * @since 3.1.3 |
| 3282 | * |
| 3283 | * @param string $mime_type Mime type |
| 3284 | * @return string Sanitized mime type |
| 3285 | */ |
| 3286 | function sanitize_mime_type( $mime_type ) { |
| 3287 | $sani_mime_type = preg_replace( '/[^-+*.a-zA-Z0-9\/]/', '', $mime_type ); |
| 3288 | return apply_filters( 'sanitize_mime_type', $sani_mime_type, $mime_type ); |
| 3289 | } |
| 3290 | |
| 3291 | /** |
| 3292 | * Sanitize space or carriage return separated URLs that are used to send trackbacks. |
| 3293 | * |
| 3294 | * @since 3.4.0 |
| 3295 | * |
| 3296 | * @param string $to_ping Space or carriage return separated URLs |
| 3297 | * @return string URLs starting with the http or https protocol, separated by a carriage return. |