AdvancedValueBinder.php

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<?php
if (!defined('PHPEXCEL_ROOT')) {
        define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
        require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
}


class PHPExcel_Cell_AdvancedValueBinder extends PHPExcel_Cell_DefaultValueBinder implements PHPExcel_Cell_IValueBinder
{
        public function bindValue(PHPExcel_Cell $cell, $value = null)
        {
                // sanitize UTF-8 strings
                if (is_string($value)) {
                        $value = PHPExcel_Shared_String::SanitizeUTF8($value);
                }

                // Find out data type
                $dataType = parent::dataTypeForValue($value);

                // Style logic - strings
                if ($dataType === PHPExcel_Cell_DataType::TYPE_STRING && !$value instanceof PHPExcel_RichText) {
                        //      Test for booleans using locale-setting
                        if ($value == PHPExcel_Calculation::getTRUE()) {
                                $cell->setValueExplicit( True, PHPExcel_Cell_DataType::TYPE_BOOL);
                                return true;
                        } elseif($value == PHPExcel_Calculation::getFALSE()) {
                                $cell->setValueExplicit( False, PHPExcel_Cell_DataType::TYPE_BOOL);
                                return true;
                        }

                        // Check for number in scientific format
                        if (preg_match('/^'.PHPExcel_Calculation::CALCULATION_REGEXP_NUMBER.'$/', $value)) {
                                $cell->setValueExplicit( (float) $value, PHPExcel_Cell_DataType::TYPE_NUMERIC);
                                return true;
                        }

                        // Check for percentage
                        if (preg_match('/^\-?[0-9]*\.?[0-9]*\s?\%$/', $value)) {
                                // Convert value to number
                                $cell->setValueExplicit( (float)str_replace('%', '', $value) / 100, PHPExcel_Cell_DataType::TYPE_NUMERIC);
                                // Set style
                                $cell->getParent()->getStyle( $cell->getCoordinate() )->getNumberFormat()->setFormatCode( PHPExcel_Style_NumberFormat::FORMAT_PERCENTAGE );
                                return true;
                        }

                        // Check for time without seconds e.g. '9:45', '09:45'
                        if (preg_match('/^(\d|[0-1]\d|2[0-3]):[0-5]\d$/', $value)) {
                                list($h, $m) = explode(':', $value);
                                $days = $h / 24 + $m / 1440;
                                // Convert value to number
                                $cell->setValueExplicit($days, PHPExcel_Cell_DataType::TYPE_NUMERIC);
                                // Set style
                                $cell->getParent()->getStyle( $cell->getCoordinate() )->getNumberFormat()->setFormatCode( PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME3 );
                                return true;
                        }

                        // Check for time with seconds '9:45:59', '09:45:59'
                        if (preg_match('/^(\d|[0-1]\d|2[0-3]):[0-5]\d:[0-5]\d$/', $value)) {
                                list($h, $m, $s) = explode(':', $value);
                                $days = $h / 24 + $m / 1440 + $s / 86400;
                                // Convert value to number
                                $cell->setValueExplicit($days, PHPExcel_Cell_DataType::TYPE_NUMERIC);
                                // Set style
                                $cell->getParent()->getStyle( $cell->getCoordinate() )->getNumberFormat()->setFormatCode( PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME4 );
                                return true;
                        }

                        // Check for datetime, e.g. '2008-12-31', '2008-12-31 15:59', '2008-12-31 15:59:10'
                        if (($d = PHPExcel_Shared_Date::stringToExcel($value)) !== false) {
                                // Convert value to number
                                $cell->setValueExplicit($d, PHPExcel_Cell_DataType::TYPE_NUMERIC);
                                // Determine style. Either there is a time part or not. Look for ':'
                                if (strpos($value, ':') !== false) {
                                        $formatCode = 'yyyy-mm-dd h:mm';
                                } else {
                                        $formatCode = 'yyyy-mm-dd';
                                }
                                $cell->getParent()->getStyle( $cell->getCoordinate() )->getNumberFormat()->setFormatCode($formatCode);
                                return true;
                        }

                        // Check for newline character "\n"
                        if (strpos($value, "\n") !== false) {
                                $value = PHPExcel_Shared_String::SanitizeUTF8($value);
                                $cell->setValueExplicit($value, PHPExcel_Cell_DataType::TYPE_STRING);
                                // Set style
                                $cell->getParent()->getStyle( $cell->getCoordinate() )->getAlignment()->setWrapText(true);
                                return true;
                        }
                }

                // Not bound yet? Use parent...
                return parent::bindValue($cell, $value);
        }
}