xml_domit_xpath.php

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				}
				else if (strpos($expression, '<') !== false) {
					$expression = str_replace('@', ('floatval($' . "contextNode->getAttribute('"), $expression);
					$expression = str_replace('<', "')) < floatval(", $expression);
					if (!is_numeric($expression)) $expression = str_replace('floatval', '', $expression);
					$expression .= ')';
				}
				else {
					$expression = str_replace('@', ('$' . "contextNode->hasAttribute('"), $expression);
					$expression.= "')";
				}
			}
			else {
				if (strpos($expression, '>=') !== false) {
					$signPos = strpos($expression, '>=');
					$elementName = trim(substr($expression, 0, $signPos));
					$elementValue = trim(substr($expression, ($signPos + 2)));

					$expression = '$' . "this->hasNamedChildElementGreaterThanOrEqualToValue(" .
									'$' . "contextNode, '" . $elementName . "', " .
									$elementValue . ')';
				}
				else if (strpos($expression, '<=') !== false) {
					$signPos = strpos($expression, '>=');
					$elementName = trim(substr($expression, 0, $signPos));
					$elementValue = trim(substr($expression, ($signPos + 2)));

					$expression = '$' . "this->hasNamedChildElementLessThanOrEqualToValue(" .
									'$' . "contextNode, '" . $elementName . "', " .
									$elementValue . ')';
				}
				else if (strpos($expression, '!=') !== false) {
					$signPos = strpos($expression, '>=');
					$elementName = trim(substr($expression, 0, $signPos));
					$elementValue = trim(substr($expression, ($signPos + 2)));

					$expression = '$' . "this->hasNamedChildElementNotEqualToValue(" .
									'$' . "contextNode, '" . $elementName . "', " .
									$elementValue . ')';
				}
				else if (strpos($expression, '=') !== false) {
					$signPos = strpos($expression, '=');
					$elementName = trim(substr($expression, 0, $signPos));
					$elementValue = trim(substr($expression, ($signPos + 1)));

					$expression = '$' . "this->hasNamedChildElementEqualToValue(" .
									'$' . "contextNode, '" . $elementName . "', " .
									$elementValue . ')';

				}
				else if (strpos($expression, '>') !== false) {
					$signPos = strpos($expression, '=');
					$elementName = trim(substr($expression, 0, $signPos));
					$elementValue = trim(substr($expression, ($signPos + 1)));

					$expression = '$' . "this->hasNamedChildElementGreaterThanValue(" .
									'$' . "contextNode, '" . $elementName . "', " .
									$elementValue . ')';
				}
				else if (strpos($expression, '<') !== false) {
					$signPos = strpos($expression, '=');
					$elementName = trim(substr($expression, 0, $signPos));
					$elementValue = trim(substr($expression, ($signPos + 1)));

					$expression = '$' . "this->hasNamedChildElementLessThanValue(" .
									'$' . "contextNode, '" . $elementName . "', " .
									$elementValue . ')';
				}
				else {
					$expression = '$' . "this->hasNamedChildElement(" .
									'$' . "contextNode, '" . $expression . "')";
				}
			}
		}

		return $expression;
	} //expressionToPHP

	/**
	* Selects nodes that match the predicate expression
	* @param string The predicate expression, formatted as a PHP expression
	*/
	function filterByPHPExpression($expression) {
		if (count($this->globalNodeContainer) != 0) {
			foreach ($this->globalNodeContainer as $key =>$value) {
				$contextNode =& $this->globalNodeContainer[$key];

				if ($contextNode->nodeType == DOMIT_ELEMENT_NODE) {
					$evaluatedExpression = 'if (' . $expression . ") $" .
									'this->localNodeContainer[] =& $' . 'contextNode;';
					eval($evaluatedExpression);
				}
			}
		}
	} //filterByPHPExpression

	/**
	* Selects nodes with child elements that match the specified name
	* @param object The parent node of the child elements to match
	* @param string The tag name to match on
	* @return boolean True if a matching child element exists
	*/
	function hasNamedChildElement(&$parentNode, $nodeName) {
		$total = $parentNode->childCount;

		for ($i = 0; $i < $total; $i++) {
			$currNode =& $parentNode->childNodes[$i];

			if (($currNode->nodeType == DOMIT_ELEMENT_NODE) && ($currNode->nodeName == $nodeName)) {
				return true;
			}
		}

		return false;
	} //hasNamedChildElement

	/**
	* Selects nodes with child elements that match the specified name and text value
	* @param object The parent node of the child elements to match
	* @param string The tag name to match on
	* @param string The text string to match on
	* @return boolean True if a matching child element exists
	*/
	function hasNamedChildElementEqualToValue(&$parentNode, $nodeName, $nodeValue) {
		$total = $parentNode->childCount;

		for ($i = 0; $i < $total; $i++) {
			$currNode =& $parentNode->childNodes[$i];

			if (($currNode->nodeType == DOMIT_ELEMENT_NODE) &&
				($currNode->nodeName == $nodeName) && ($currNode->getText() == $nodeValue)) {
				return true;
			}
		}

		return false;
	} //hasNamedChildElementEqualToValue

	/**
	* Selects nodes with child elements that are greater than or equal to the specified name and value
	* @param object The parent node of the child elements to match
	* @param string The tag name to match on
	* @param string The text string to match on
	* @return boolean True if a matching child element exists
	*/
	function hasNamedChildElementGreaterThanOrEqualToValue(&$parentNode, $nodeName, $nodeValue) {
		$isNumeric = false;

		if (is_numeric($nodeValue)) {
			$isNumeric = true;
			$nodeValue = floatval($nodeValue);
		}

		$total = $parentNode->childCount;

		for ($i = 0; $i < $total; $i++) {
			$currNode =& $parentNode->childNodes[$i];

			if (($currNode->nodeType == DOMIT_ELEMENT_NODE) && ($currNode->nodeName == $nodeName)) {
				if ($isNumeric) {$compareVal = floatval($currNode->getText());}
				else {$compareVal = $currNode->getText();}
				if ($compareVal >= $nodeValue) return true;
			}
		}

		return false;
	} //hasNamedChildElementGreaterThanOrEqualToValue


	/**
	* Selects nodes with child elements that are less than or equal to the specified name and value
	* @param object The parent node of the child elements to match
	* @param string The tag name to match on
	* @param string The text string to match on
	* @return boolean True if a matching child element exists
	*/
	function hasNamedChildElementLessThanOrEqualToValue(&$parentNode, $nodeName, $nodeValue) {
		$isNumeric = false;

		if (is_numeric($nodeValue)) {
			$isNumeric = true;
			$nodeValue = floatval($nodeValue);
		}

		$total = $parentNode->childCount;

		for ($i = 0; $i < $total; $i++) {
			$currNode =& $parentNode->childNodes[$i];

			if (($currNode->nodeType == DOMIT_ELEMENT_NODE) && ($currNode->nodeName == $nodeName)) {
				if ($isNumeric) {$compareVal = floatval($currNode->getText());}
				else {$compareVal = $currNode->getText();}
				if ($compareVal <= $nodeValue) return true;
			}
		}

		return false;
	} //hasNamedChildElementLessThanOrEqualToValue

	/**
	* Selects nodes with child elements that are not equal to the specified name and value
	* @param object The parent node of the child elements to match
	* @param string The tag name to match on
	* @param string The text string to match on
	* @return boolean True if a matching child element exists
	*/
	function hasNamedChildElementNotEqualToValue(&$parentNode, $nodeName, $nodeValue) {
		$isNumeric = false;

		if (is_numeric($nodeValue)) {
			$isNumeric = true;
			$nodeValue = floatval($nodeValue);
		}

		$total = $parentNode->childCount;

		for ($i = 0; $i < $total; $i++) {
			$currNode =& $parentNode->childNodes[$i];

			if (($currNode->nodeType == DOMIT_ELEMENT_NODE) && ($currNode->nodeName == $nodeName)) {
				if ($isNumeric) {$compareVal = floatval($currNode->getText());}
				else {$compareVal = $currNode->getText();}
				if ($compareVal != $nodeValue) return true;
			}
		}

		return false;
	} //hasNamedChildElementNotEqualToValue

		/**
	* Selects nodes with child elements that are greater than the specified name and value
	* @param object The parent node of the child elements to match
	* @param string The tag name to match on
	* @param string The text string to match on
	* @return boolean True if a matching child element exists
	*/
	function hasNamedChildElementGreaterThanValue(&$parentNode, $nodeName, $nodeValue) {
		$isNumeric = false;

		if (is_numeric($nodeValue)) {
			$isNumeric = true;
			$nodeValue = floatval($nodeValue);
		}

		$total = $parentNode->childCount;

		for ($i = 0; $i < $total; $i++) {
			$currNode =& $parentNode->childNodes[$i];

			if (($currNode->nodeType == DOMIT_ELEMENT_NODE) && ($currNode->nodeName == $nodeName)) {
				if ($isNumeric) {$compareVal = floatval($currNode->getText());}
				else {$compareVal = $currNode->getText();}
				if ($compareVal > $nodeValue) return true;
			}
		}

		return false;
	} //hasNamedChildElementGreaterThanValue


	/**
	* Selects nodes with child elements that are less than the specified name and value
	* @param object The parent node of the child elements to match
	* @param string The tag name to match on
	* @param string The text string to match on
	* @return boolean True if a matching child element exists
	*/
	function hasNamedChildElementLessThanValue(&$parentNode, $nodeName, $nodeValue) {
		$isNumeric = false;

		if (is_numeric($nodeValue)) {
			$isNumeric = true;
			$nodeValue = floatval($nodeValue);
		}

		$total = $parentNode->childCount;

		for ($i = 0; $i < $total; $i++) {
			$currNode =& $parentNode->childNodes[$i];

			if (($currNode->nodeType == DOMIT_ELEMENT_NODE) && ($currNode->nodeName == $nodeName)) {
				if ($isNumeric) {$compareVal = floatval($currNode->getText());}
				else {$compareVal = $currNode->getText();}
				if ($compareVal < $nodeValue) return true;
			}
		}

		return false;
	} //hasNamedChildElementLessThanValue

	/**
	* Selects named elements of the specified index
	* @param string The pattern segment containing the node expression
	* @param int The index (base 1) of the matching node
	* @param boolean True if the selection is to be performed recursively
	*/
	function refilterByIndex($index) {
		if ($index > 1) {
			if (count($this->globalNodeContainer) != 0) {
				$counter = 0;
				$lastParentID = null;

				foreach ($this->globalNodeContainer as $key =>$value) {
					$currNode =& $this->globalNodeContainer[$key];

					if (($lastParentID != null) && ($currNode->parentNode->uid != $lastParentID)) {
						$counter = 0;
					}

					$counter++;

					if (($counter == $index) && ($currNode->parentNode->uid == $lastParentID)) {
						$this->localNodeContainer[] =& $currNode;
					}

					$lastParentID = $currNode->parentNode->uid;
				}
			}
		}
		else {
			$this->localNodeContainer =& $this->globalNodeContainer;
		}
	} //refilterByIndex


	/**
	* Selects named elements of the specified index
	* @param string The pattern segment containing the node expression
	* @param int The index (base 1) of the matching node
	* @param boolean True if the selection is to be performed recursively
	*/
	function filterByIndex($nodeName, $index, $deep) {
		if (count($this->globalNodeContainer) != 0) {
			foreach ($this->globalNodeContainer as $key =>$value) {
				$currNode =& $this->globalNodeContainer[$key];
				$this->_filterByIndex($currNode, $nodeName, $index, $deep);
			}
		}
	} //filterByIndex

	/**
	* Selects named elements of the specified index
	* @param object The context node
	* @param string The pattern segment containing the node expression
	* @param int The index (base 1) of the matching node
	* @param boolean True if the selection is to be performed recursively
	*/
	function _filterByIndex(&$contextNode, $nodeName, $index, $deep) {
		if (($contextNode->nodeType == DOMIT_ELEMENT_NODE) ||
			($contextNode->nodeType == DOMIT_DOCUMENT_NODE)) {