wiki.techinc.nl/includes/htmlform/HTMLSelectField.php

<?php

/**
 * A select dropdown field.  Basically a wrapper for Xmlselect class
 */
class HTMLSelectField extends HTMLFormField {
	function validate( $value, $alldata ) {
		$p = parent::validate( $value, $alldata );

		if ( $p !== true ) {
			return $p;
		}

		$validOptions = HTMLFormField::flattenOptions( $this->mParams['options'] );

		if ( in_array( $value, $validOptions ) ) {
			return true;
		} else {
			return $this->msg( 'htmlform-select-badoption' )->parse();
		}
	}

	function getInputHTML( $value ) {
		$select = new XmlSelect( $this->mName, $this->mID, strval( $value ) );

		# If one of the options' 'name' is int(0), it is automatically selected.
		# because PHP sucks and thinks int(0) == 'some string'.
		# Working around this by forcing all of them to strings.
		foreach ( $this->mParams['options'] as &$opt ) {
			if ( is_int( $opt ) ) {
				$opt = strval( $opt );
			}
		}
		unset( $opt ); # PHP keeps $opt around as a reference, which is a bit scary

		if ( !empty( $this->mParams['disabled'] ) ) {
			$select->setAttribute( 'disabled', 'disabled' );
		}

		if ( $this->mClass !== '' ) {
			$select->setAttribute( 'class', $this->mClass );
		}

		$select->addOptions( $this->mParams['options'] );

		return $select->getHTML();
	}
}