<?php /** * TExpression class file * * @author Qiang Xue <qiang.xue@gmail.com> * @link http://www.pradosoft.com/ * @copyright Copyright © 2005-2015 PradoSoft * @license http://www.pradosoft.com/license/ * @package System.Web.UI.WebControls */ /** * TExpression class * * TExpression evaluates a PHP expression and renders the result. * The expression is evaluated during the rendering stage. The expression being * evaluated can be set via the property {@link setExpression Expression}. * The context of the expression evaluated is the TExpression object itself. * * Note, since TExpression allows evaluation of arbitrary PHP expression, * make sure {@link setExpression Expression} does not come directly from user input. * * @author Qiang Xue <qiang.xue@gmail.com> * @package System.Web.UI.WebControls * @since 3.0 */ class TExpression extends TControl { /** * @var string PHP expression to be evaluated */ private $_e=''; /** * @return string the expression to be evaluated */ public function getExpression() { return $this->_e; } /** * @param string the expression to be evaluated */ public function setExpression($value) { $this->_e=$value; } /** * Renders the evaluation result of the expression. * @param THtmlWriter the writer used for the rendering purpose */ public function render($writer) { if($this->_e!=='') $writer->write($this->evaluateExpression($this->_e)); } }