Small library for manipulating Excel spreadsheets using COM on a Windows machine with Microsoft Office is installed

bootstrap.php

<?php

spl_autoload_register(function($className) use($classMap) {
    static $classMap;
    if (!isset($classMap)) {
        $classMap = array(
            'excelcom\workbook'  => __DIR__ . '/Workbook.php';,
            'excelcom\worksheet' => __DIR__ . '/Worksheet.php';,
            'excelcom\cell'      => __DIR__ . '/Cell.php';,
        );
    }

    $className = strtolower($className);

    if (isset($classMap[$className])) {
        require $classMap[$className];
    }
});

Cell.php

<?php
/**
 * Class for objects representing a single cell in an Excel worksheet
 *
 * PHP version 5.3/Windows, requires Microsoft Office Excel to be installed on the host system
 *
 * @package  ExcelCOM
 * @author   Chris Wright <info@daverandom.com>
 * @license  http://www.opensource.org/licenses/mit-license.html MIT License
 * @version  1.0.0
 */

namespace ExcelCOM;

/**
 * Class for objects representing a single cell in an Excel worksheet
 *
 * @package  ExcelCOM
 * @author   Chris Wright <info@daverandom.com>
 */
class Cell
{
    /**
     * @var \VARIANT Object from COM representing the internal cell
     */
    private $cell;

    /**
     * @var \DaveRandom\ExcelCOM\Worksheet Reference to the parent Worksheet object
     */
    private $worksheet;

    /**
     * Constructor
     *
     * @param \VARIANT                       $cell     Object from COM representing the internal cell
     * @param \DaveRandom\ExcelCOM\Worksheet $workbook Reference to the parent Worksheet object
     */
    public function __construct($cell, Worksheet $worksheet)
    {
        $this->cell = $cell;
        $this->worksheet = $worksheet;
    }

    /**
     * Called when the object is used in a string context
     *
     * @return string A string representation of the cell value
     */
    public function __toString()
    {
        return (string) $this->getValue();
    }

    /**
     * Get the parent Worksheet object
     *
     * @return \DaveRandom\ExcelCOM\Worksheet The parent Worksheet object
     */
    public function getWorksheet()
    {
        return $this->worksheet;
    }

    /**
     * Set the cell value
     *
     * @param mixed $value The new cell value
     *
     * @return \DaveRandom\ExcelCOM\Cell The current Cell object for method chaining
     *
     * @throws \RuntimeException When the set operation fails
     */
    public function setValue($value)
    {
        try {
            $this->cell->Value = $value;
        } catch (\Exception $e) {
            throw new \RuntimeException('Unable to set cell value', 0, $e);
        }

        return $this;
    }

    /**
     * Get the cell value
     *
     * @return mixed The cell value
     */
    public function getValue()
    {
        return $this->cell->Value;
    }
}

example.php

<?php

// Simple example for setting the value of cell B4

use \DaveRandom\ExcelCOM\Workbook,
    \DaveRandom\ExcelCOM\Worksheet,
    \DaveRandom\ExcelCOM\Cell;

require 'ExcelCOM/bootstrap.php';

$workbook = new Workbook('path/to/file.xls');

// Get a worksheet by numeric index (1-indexed)
// Also accepts the string name of a sheet
$worksheet = $workbook->getWorksheet(1);

// Get Cell B4 and set the value
$cell = $worksheet->getCell('B4');
$cell->setValue('Hello world!');

// Save and close the workbook
$workbook->save();
$workbook->close();

Workbook.php

<?php
/**
 * Class for objects representing an Excel workbook
 *
 * PHP version 5.3/Windows, requires Microsoft Office Excel to be installed on the host system
 *
 * @package  ExcelCOM
 * @author   Chris Wright <info@daverandom.com>
 * @license  http://www.opensource.org/licenses/mit-license.html MIT License
 * @version  1.0.0
 */

namespace ExcelCOM;

/**
 * Class for objects representing an Excel workbook
 *
 * @package  ExcelCOM
 * @author   Chris Wright <info@daverandom.com>
 */
class Workbook
{
    /**
     * @var bool Whether the file is currently open
     *
     * This is a work-around for the fact that you end up with an orphaned Excel.exe when
     * the script dies before performing a graceful close
     */
    private $open = false;

    /**
     * @var \COM Master COM object
     */
    private $com;

    /**
     * @var \VARIANT Object from COM representing the internal workbook
     */
    private $workbook;

    /**
     * @var \DaveRandom\ExcelCOM\Cell[] Cache of Cell objects, used to avoid creating the same Cell more than once
     */
    private $worksheetCache = array();

    /**
     * Constructor
     *
     * @param string $path Path to the file on disk
     *
     * @throws \RuntimeException When the file does not exist or cannot be opened
     */
    public function __construct($path)
    {
        $realPath = realpath($path);
        if (!$realPath || !is_file($realPath)) {
            throw new \RuntimeException("The specified file '$path' does not exist");
        }

        try {
            $this->com = new \COM('Excel.Application');
            $this->workbook = $this->com->Workbooks->Open($realPath);
        } catch (\Exception $e) {
            throw new \RuntimeException("Unable to open workbook '$realPath'", 0, $e);
        }

        // To avoid orphaned Excel.exe if a fatal error occurs. I know it looks odd to
        // register a proper destructor as a shutdown function, but it really is required
        // in order to circumvent the problem, I promise.
        $this->open = true;
        register_shutdown_function(array($this, '__destruct'));
    }

    /**
     * Destructor
     *
     * Force a clean shutdown of Excel without saving changes
     */
    public function __destruct()
    {
        $this->close(false);
    }

    /**
     * Get an object representing a worksheet in the file
     *
     * @param string|int $sheetId The worksheet name or number. Numbers are 1-indexed. Returns the current active sheet if omitted.
     *
     * @return \DaveRandom\ExcelCOM\Worksheet The worksheet object
     *
     * @throws \RuntimeException When a reference to the worksheet could not be obtained
     */
    public function getWorksheet($sheetId = null)
    {
        try {
            if (isset($sheetId)) {
                $sheet = $this->workbook->Sheets($sheetId);
            } else {
                $sheet = $this->workbook->ActiveSheet;
            }
        } catch (\Exception $e) {
            throw new \RuntimeException('Unable to obtain a reference to the specified sheet', 0, $e);
        }

        if (!$sheet) {
            throw new \RuntimeException('The workbook has no active worksheet');
        }

        return new Worksheet($sheet, $this);
    }

    /**
     * Save any changes to the file
     *
     * @param string $as Path to save the file. Overwrites the source file if omitted.
     *
     * @return \DaveRandom\ExcelCOM\Workbook The current Workbook object for method chaining
     *
     * @throws \RuntimeException When the file could not be saved
     */
    public function save($as = null)
    {
        try {
            $this->com->Calculate();
            if ($as !== null) {
                $as = str_replace('/', '\\', $as);
                $this->workbook->SaveAs($as);
            } else {
                $this->workbook->Save();
            }
        } catch (\Exception $e) {
            throw new \RuntimeException('Unable to save workbook', 0, $e);
        }

        return $this;
    }

    /**
     * Close the current workbook
     *
     * @param bool $save Save changes to source file if true.
     *
     * @throws \RuntimeException When the file could not be closed, this most likely indicates a problem saving.
     */
    public function close($save = false)
    {
        if ($this->open) {
            try {
                $this->open = false;
                $this->workbook->Close((bool) $save);
                $this->workbook = $this->com = null;
            } catch (\Exception $e) {
                throw new \RuntimeException('Unable to close workbook', 0, $e);
            }
        }
    }
}

Worksheet.php

<?php
/**
 * Class for objects representing a single worksheet in an Excel workbook
 *
 * PHP version 5.3/Windows, requires Microsoft Office Excel to be installed on the host system
 *
 * @package  ExcelCOM
 * @author   Chris Wright <info@daverandom.com>
 * @license  http://www.opensource.org/licenses/mit-license.html MIT License
 * @version  1.0.0
 */

namespace ExcelCOM;

/**
 * Class for objects representing a single worksheet in an Excel workbook
 *
 * @package  ExcelCOM
 * @author   Chris Wright <info@daverandom.com>
 */
class Worksheet
{
    /**
     * @var \VARIANT Object from COM representing the internal worksheet
     */
    private $worksheet;

    /**
     * @var \DaveRandom\ExcelCOM\Workbook Reference to the parent Workbook object
     */
    private $workbook;

    /**
     * @var \DaveRandom\ExcelCOM\Cell[] Cache of Cell objects, used to avoid creating the same Cell more than once
     */
    private $cellCache = array();

    /**
     * Constructor
     *
     * @param \VARIANT                      $worksheet Object from COM representing the internal worksheet
     * @param \DaveRandom\ExcelCOM\Workbook $workbook  Reference to the parent Workbook object
     */
    public function __construct($worksheet, Workbook $workbook)
    {
        $this->worksheet = $worksheet;
        $this->workbook = $workbook;
    }

    /**
     * Convert an alpha column reference to an integer
     *
     * @param string $x Alpha-string representing an X-coordinate in the worksheet
     *
     * @return int Numeric representation of input
     *
     * @throws \OutOfRangeException When the input does not represent a valid X-coordinate
     */
    private function xAlphaToInt($x)
    {
        switch (strlen($x)) {
            case 1:
                return ord($x) - 64;

            case 2:
                return ((ord($x[0]) - 64) * 26) + ord($x[1]) - 64;

            default:
                throw new \OutOfRangeException('Invalid cell coordinate');
        }
    }

    /**
     * Get a Cell object from the internal cache, creating it if it doesn't yet exist
     *
     * @param int $x The X-coordinate of the cell
     * @param int $y The Y-coordinate of the cell
     *
     * @return \DaveRandom\ExcelCOM\Cell The Cell object
     *
     * @throws \RuntimeException When a reference to the cell cannot be obtained
     */
    private function getCellCached($x, $y)
    {
        if (!isset($this->cellCache[$x][$y])) {
            try {
                $cell = $this->worksheet->Cells($y, $x);
            } catch (\Exception $e) {
                throw new \RuntimeException('Unable to get reference to the specified cell', 0, $e);
            }

            $this->cellCache[$x][$y] = new Cell($cell, $this);
        }

        return $this->cellCache[$x][$y];
    }

    /**
     * Get the parent Workbook object
     *
     * @return \DaveRandom\ExcelCOM\Workbook The parent Workbook object
     */
    public function getWorkbook()
    {
        return $this->workbook;
    }

    /**
     * Get a Cell object representing the cell at the specified coordinate
     *
     * @param string|int $x The X-coordinate of the cell or a full cell identifier string
     * @param int        $y The Y-coordinate of the cell, ignored if $x received a full cell indentifier
     *
     * @return \DaveRandom\ExcelCOM\Cell The Cell object
     *
     * @throws \OutOfRangeException When an invalid cell coordinate is requested
     * @throws \RuntimeException    When a reference to the cell cannot be obtained
     */
    public function getCell($x, $y = null)
    {
        if (preg_match('/^(?P<x>[A-Z]+)(?P<y>\d+)?$/', strtoupper(trim($x)), $coords)) {
            if (!empty($coords['y'])) {
                $y = $coords['y'];
            }
            $x = $this->xAlphaToInt($coords['x']);
        }

        if (!isset($y)) {
            throw new \OutOfRangeException('Invalid cell coordinate');
        }

        $x = (int) $x;
        $y = (int) $y;
        if (!$x || !$y || $x > 256 || $y > 65536) {
            throw new \OutOfRangeException('Invalid cell coordinate');
        }

        return $this->getCellCached($x, $y);
    }

    /**
     * Unprotect the worksheet
     *
     * @param string $password The password used to protect the sheet, no password if omitted
     *
     * @return \DaveRandom\ExcelCOM\Worksheet The current Worksheet object for method chaining
     *
     * @throws \RuntimeException When the unprotect operation fails
     */
    public function unprotect($password = null)
    {
        try {
            if (isset($password)) {
                $this->worksheet->Unprotect($password);
            } else {
                $this->worksheet->Unprotect();
            }
        } catch (\Exception $e) {
            throw new \RuntimeException('Unable to unprotect sheet', 0, $e);
        }

        return $this;
    }

    /**
     * Protect the worksheet
     *
     * @param string $password The password used to protect the sheet, no password if omitted
     *
     * @return \DaveRandom\ExcelCOM\Worksheet The current Worksheet object for method chaining
     *
     * @throws \RuntimeException When the protect operation fails
     */
    public function protect($password = null)
    {
        try {
            if ($password !== null) {
                $this->worksheet->Protect($password);
            } else {
                $this->worksheet->Protect();
            }
        } catch (\Exception $e) {
            throw new \RuntimeException('Unable to protect sheet', 0, $e);
        }

        return $this;
    }
}