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Source View: sanitize_key

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Line Code
910  * @since 3.0.0
911  *
912  * @param string $key String key
913  * @return string Sanitized key
914  */
915 function sanitize_key( $key ) {
916      $raw_key = $key;
917      $key = strtolower( $key );
918      $key = preg_replace( '/[^a-z0-9_\-]/', '', $key );
919      return apply_filters( 'sanitize_key', $key, $raw_key );
920 }
921
922 /**
923  * Sanitizes title or use fallback title.
924  *
925  * Specifically, HTML and PHP tags are stripped. Further actions can be added
926  * via the plugin API. If $title is empty and $fallback_title is set, the latter
927  * will be used.
928  *