From 37b4d18d456e3b533d838099f208e5d3f089a954 Mon Sep 17 00:00:00 2001 From: MarkBaker Date: Sat, 13 Sep 2014 16:12:45 +0100 Subject: [PATCH] Minor fixes to cyclic references in formulae --- Classes/PHPExcel/Calculation.php | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/Classes/PHPExcel/Calculation.php b/Classes/PHPExcel/Calculation.php index 4de70eb2..fa89671f 100644 --- a/Classes/PHPExcel/Calculation.php +++ b/Classes/PHPExcel/Calculation.php @@ -2374,13 +2374,13 @@ class PHPExcel_Calculation { * @throws PHPExcel_Calculation_Exception */ public function _calculateFormulaValue($formula, $cellID=null, PHPExcel_Cell $pCell = null) { - $cellValue = ''; + $cellValue = null; // Basic validation that this is indeed a formula // We simply return the cell value if not $formula = trim($formula); if ($formula{0} != '=') return self::_wrapResult($formula); - $formula = ltrim(substr($formula,1)); + $formula = ltrim(substr($formula, 1)); if (!isset($formula{0})) return self::_wrapResult($formula); $pCellParent = ($pCell !== NULL) ? $pCell->getWorksheet() : NULL; @@ -2392,20 +2392,23 @@ class PHPExcel_Calculation { if (($wsTitle{0} !== "\x00") && ($this->_cyclicReferenceStack->onStack($wsTitle.'!'.$cellID))) { if ($this->cyclicFormulaCount <= 0) { + $this->_cyclicFormulaCell = ''; return $this->_raiseFormulaError('Cyclic Reference in Formula'); } elseif (($this->_cyclicFormulaCount >= $this->cyclicFormulaCount) && ($this->_cyclicFormulaCell == $wsTitle.'!'.$cellID)) { + $this->_cyclicFormulaCell = ''; return $cellValue; } elseif ($this->_cyclicFormulaCell == $wsTitle.'!'.$cellID) { ++$this->_cyclicFormulaCount; if ($this->_cyclicFormulaCount >= $this->cyclicFormulaCount) { + $this->_cyclicFormulaCell = ''; return $cellValue; } } elseif ($this->_cyclicFormulaCell == '') { - $this->_cyclicFormulaCell = $wsTitle.'!'.$cellID; if ($this->_cyclicFormulaCount >= $this->cyclicFormulaCount) { return $cellValue; } + $this->_cyclicFormulaCell = $wsTitle.'!'.$cellID; } }