php如何导出excel文件

最近想用php把自己的数据保存起来，并且是excel格式。

可以按一下方法：

第一步：写一个类文件（php-excel.class.php）

<?php

/**
 * Simple excel generating from PHP5
 *
 * @package Utilities
 * @license http://www.opensource.org/licenses/mit-license.php
 * @author Oliver Schwarz <oliver.schwarz@gmail.com>
 * @version 1.0
 */

/**
 * Generating excel documents on-the-fly from PHP5
 * 
 * Uses the excel XML-specification to generate a native
 * XML document, readable/processable by excel.
 * 
 * @package Utilities
 * @subpackage Excel
 * @author Oliver Schwarz <oliver.schwarz@vaicon.de>
 * @version 1.1
 * 
 * @todo Issue #4: Internet Explorer 7 does not work well with the given header
 * @todo Add option to give out first line as header (bold text)
 * @todo Add option to give out last line as footer (bold text)
 * @todo Add option to write to file
 */
class Excel_XML
{

    /**
     * Header (of document)
     * @var string
     */
        private $header = "<?xml version=\"1.0\" encoding=\"%s\"?\>\n<Workbook xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\" xmlns:x=\"urn:schemas-microsoft-com:office:excel\" xmlns:ss=\"urn:schemas-microsoft-com:office:spreadsheet\" xmlns:html=\"http://www.w3.org/TR/REC-html40\">";

        /**
         * Footer (of document)
         * @var string
         */
        private $footer = "</Workbook>";

        /**
         * Lines to output in the excel document
         * @var array
         */
        private $lines = array();

        /**
         * Used encoding
         * @var string
         */
        private $sEncoding;
        
        /**
         * Convert variable types
         * @var boolean
         */
        private $bConvertTypes;
        
        /**
         * Worksheet title
         * @var string
         */
        private $sWorksheetTitle;

        /**
         * Constructor
         * 
         * The constructor allows the setting of some additional
         * parameters so that the library may be configured to
         * one's needs.
         * 
         * On converting types:
         * When set to true, the library tries to identify the type of
         * the variable value and set the field specification for Excel
         * accordingly. Be careful with article numbers or postcodes
         * starting with a '0' (zero)!
         * 
         * @param string $sEncoding Encoding to be used (defaults to UTF-8)
         * @param boolean $bConvertTypes Convert variables to field specification
         * @param string $sWorksheetTitle Title for the worksheet
         */
        public function __construct($sEncoding = 'UTF-8', $bConvertTypes = false, $sWorksheetTitle = 'Table1')
        {
                $this->bConvertTypes = $bConvertTypes;
            $this->setEncoding($sEncoding);
            $this->setWorksheetTitle($sWorksheetTitle);
        }
        
        /**
         * Set encoding
         * @param string Encoding type to set
         */
        public function setEncoding($sEncoding)
        {
            $this->sEncoding = $sEncoding;
        }

        /**
         * Set worksheet title
         * 
         * Strips out not allowed characters and trims the
         * title to a maximum length of 31.
         * 
         * @param string $title Title for worksheet
         */
        public function setWorksheetTitle ($title)
        {
                $title = preg_replace ("/[\\\|:|\/|\?|\*|\[|\]]/", "", $title);
                $title = substr ($title, 0, 31);
                $this->sWorksheetTitle = $title;
        }

        /**
         * Add row
         * 
         * Adds a single row to the document. If set to true, self::bConvertTypes
         * checks the type of variable and returns the specific field settings
         * for the cell.
         * 
         * @param array $array One-dimensional array with row content
         */
        private function addRow ($array)
        {
            $cells = "";
                foreach ($array as $k => $v):
                        $type = 'String';
                        if ($this->bConvertTypes === true && is_numeric($v)):
                                $type = 'Number';
                        endif;
                        $v = htmlentities($v, ENT_COMPAT, $this->sEncoding);
                        $cells .= "<Cell><Data ss:Type=\"$type\">" . $v . "</Data></Cell>\n"; 
                endforeach;
                $this->lines[] = "<Row>\n" . $cells . "</Row>\n";
        }

        /**
         * Add an array to the document
         * @param array 2-dimensional array
         */
        public function addArray ($array)
        {
                foreach ($array as $k => $v)
                        $this->addRow ($v);
        }


        /**
         * Generate the excel file
         * @param string $filename Name of excel file to generate (...xls)
         */
        public function generateXML ($filename = 'excel-export')
        {
                // correct/validate filename
                $filename = preg_replace('/[^aA-zZ0-9\_\-]/', '', $filename);
        
                // deliver header (as recommended in php manual)
                header("Content-Type: application/vnd.ms-excel; charset=" . $this->sEncoding);
                header("Content-Disposition: inline; filename=\"" . $filename . ".xls\"");

                // print out document to the browser
                // need to use stripslashes for the damn ">"
                echo stripslashes (sprintf($this->header, $this->sEncoding));
                echo "\n<Worksheet ss:Name=\"" . $this->sWorksheetTitle . "\">\n<Table>\n";
                foreach ($this->lines as $line)
                        echo $line;

                echo "</Table>\n</Worksheet>\n";
                echo $this->footer;
        }

}

?>

第二步：调用实例（test.php）

<?php
// load library
require 'php-excel.class.php';

// create a simple 2-dimensional array
$data = array(
        array ('商户编号', '商户名称'),
        array('0001', '我是商户01'),
        array('0002', '我是商户02'),
        array('0003', '我是商户03'),
        array('0004', '我是商户04'),
        array('0005', '我是商户05'),
        array('0006', '我是商户06'),
        array('0007', '我是商户07'),
        array('0008', '我是商户08'),
        array('0009', '我是商户09'),
        array('0010', '我是商户10')
        );
// generate file (constructor parameters are optional)
$xls = new Excel_XML('UTF-8', false, 'My Test Sheet');
$xls->addArray($data);
$xls->generateXML('my-test');

?>

第三步：运行test.php 文件，就会自动保存。

注意：文件必须是UTF-8格式。

　　　my-test是你要保存的文件名称，这个文件名必须是英文才可以。