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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 |
---|---|
3218 | * Sanitize a mime type |
3219 | * |
3220 | * @since 3.1.3 |
3221 | * |
3222 | * @param string $mime_type Mime type |
3223 | * @return string Sanitized mime type |
3224 | */ |
3225 | function sanitize_mime_type( $mime_type ) { |
3226 | $sani_mime_type = preg_replace( '/[^-+*.a-zA-Z0-9\/]/', '', $mime_type ); |
3227 | return apply_filters( 'sanitize_mime_type', $sani_mime_type, $mime_type ); |
3228 | } |
3229 |
|
3230 | /** |
3231 | * Sanitize space or carriage return separated URLs that are used to send trackbacks. |
3232 | * |
3233 | * @since 3.4.0 |
3234 | * |
3235 | * @param string $to_ping Space or carriage return separated URLs |
3236 | * @return string URLs starting with the http or https protocol, separated by a carriage return. |