分类：PHP

PHP7对系统引擎做了大量优化工作

FACEBOOK的重构PHP引擎HHVM使其性能提高70% 使用PHP7开发程序响应速度提高将比HHVM更高

PHP7主要吸收了zend系统和FACEBOOK的HHVM系统的特性

PHP5.6-PHP7比较

PHP7 增加了捕获引擎出错 而非原来的致命错误

PHP中的变量在底层是一个zval的C指针的结构体动态分配一个内存 在PHP7中使用栈内存 节省了内存

数组键值生成HASH值 一般不会变 反复计算建的HASH值浪费资源 PHP7中将不变的键值储存起来 节省内存和运行时间

原版PHP版本存变量的HASHTABLE桶 每次存变量 申请一次内存 且不连续 PHP7中将一次性连续储存变量 所有变量占用一块连续的内存

原版PHP中 call_user_function is_array/int/string strlen defined 函数编程opcode函数

基础数据类型int float bool变成直接拷贝值

原版PHP使用C中的函数进行排序 PHP7重写了所有排序函数 preg_函数变成机器码

1、设置excel的属性：
创建人
$objPHPExcel->getProperties()->setCreator(“Maarten Balliauw”);
最后修改人
$objPHPExcel->getProperties()->setLastModifiedBy(“Maarten Balliauw”);
标题
$objPHPExcel->getProperties()->setTitle(“Office 2007 XLSX Test Document”);
题目
$objPHPExcel->getProperties()->setSubject(“Office 2007 XLSX Test Document”);
描述
$objPHPExcel->getProperties()->setDescription(“Test document for Office 2007 XLSX, generated using PHP classes.”);
关键字
$objPHPExcel->getProperties()->setKeywords(“office 2007 openxml php”);
种类
$objPHPExcel->getProperties()->setCategory(“Test result file”);
设置当前的sheet
$objPHPExcel->setActiveSheetIndex(0);
设置sheet的name
$objPHPExcel->getActiveSheet()->setTitle(‘Simple’);
设置单元格的值
复制代码 代码示例:
$objPHPExcel->getActiveSheet()->setCellValue(‘A1’, ‘String’);
$objPHPExcel->getActiveSheet()->setCellValue(‘A2’, 12);
$objPHPExcel->getActiveSheet()->setCellValue(‘A3’, true);
$objPHPExcel->getActiveSheet()->setCellValue(‘C5’, ‘=SUM(C2:C4)’);
$objPHPExcel->getActiveSheet()->setCellValue(‘B8’, ‘=MIN(B2:C5)’);
合并单元格
复制代码 代码示例:
$objPHPExcel->getActiveSheet()->mergeCells(‘A18:E22’);
分离单元格
复制代码 代码示例:
$objPHPExcel->getActiveSheet()->unmergeCells(‘A28:B28’);
保护cell
复制代码 代码示例:
$objPHPExcel->getActiveSheet()->getProtection()->setSheet(true); // Needs to be set to true in order to enable any worksheet protection!
$objPHPExcel->getActiveSheet()->protectCells(‘A3:E13’, ‘PHPExcel’);
设置格式
复制代码 代码示例:
// Set cell number formats
echo date(‘H:i:s’) . ” Set cell number formats\n”;
$objPHPExcel->getActiveSheet()->getStyle(‘E4’)->getNumberFormat()->setFormatCode(PHPExcel_Style_NumberFormat::FORMAT_CURRENCY_EUR_SIMPLE);
$objPHPExcel->getActiveSheet()->duplicateStyle( $objPHPExcel->getActiveSheet()->getStyle(‘E4’), ‘E5:E13’ );
设置宽width
复制代码 代码示例:
// Set column widths
$objPHPExcel->getActiveSheet()->getColumnDimension(‘B’)->setAutoSize(true);
$objPHPExcel->getActiveSheet()->getColumnDimension(‘D’)->setWidth(12);
设置font
复制代码 代码示例:
$objPHPExcel->getActiveSheet()->getStyle(‘B1’)->getFont()->setName(‘Candara’);
$objPHPExcel->getActiveSheet()->getStyle(‘B1’)->getFont()->setSize(20);
$objPHPExcel->getActiveSheet()->getStyle(‘B1’)->getFont()->setBold(true);
$objPHPExcel->getActiveSheet()->getStyle(‘B1’)->getFont()->setUnderline(PHPExcel_Style_Font::UNDERLINE_SINGLE);
$objPHPExcel->getActiveSheet()->getStyle(‘B1’)->getFont()->getColor()->setARGB(PHPExcel_Style_Color::COLOR_WHITE);
$objPHPExcel->getActiveSheet()->getStyle(‘E1’)->getFont()->getColor()->setARGB(PHPExcel_Style_Color::COLOR_WHITE);
$objPHPExcel->getActiveSheet()->getStyle(‘D13’)->getFont()->setBold(true);
$objPHPExcel->getActiveSheet()->getStyle(‘E13’)->getFont()->setBold(true);
设置align
复制代码 代码示例:
$objPHPExcel->getActiveSheet()->getStyle(‘D11’)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_RIGHT);
$objPHPExcel->getActiveSheet()->getStyle(‘D12’)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_RIGHT);
$objPHPExcel->getActiveSheet()->getStyle(‘D13’)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_RIGHT);
$objPHPExcel->getActiveSheet()->getStyle(‘A18’)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_JUSTIFY);
//垂直居中
复制代码 代码示例:
$objPHPExcel->getActiveSheet()->getStyle(‘A18’)->getAlignment()->setVertical(PHPExcel_Style_Alignment::VERTICAL_CENTER);
设置column的border
复制代码 代码示例:
$objPHPExcel->getActiveSheet()->getStyle(‘A4’)->getBorders()->getTop()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$objPHPExcel->getActiveSheet()->getStyle(‘B4’)->getBorders()->getTop()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$objPHPExcel->getActiveSheet()->getStyle(‘C4’)->getBorders()->getTop()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$objPHPExcel->getActiveSheet()->getStyle(‘D4’)->getBorders()->getTop()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$objPHPExcel->getActiveSheet()->getStyle(‘E4’)->getBorders()->getTop()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
设置border的color
复制代码 代码示例:
$objPHPExcel->getActiveSheet()->getStyle(‘D13’)->getBorders()->getLeft()->getColor()->setARGB(‘FF993300’);
$objPHPExcel->getActiveSheet()->getStyle(‘D13’)->getBorders()->getTop()->getColor()->setARGB(‘FF993300’);
$objPHPExcel->getActiveSheet()->getStyle(‘D13’)->getBorders()->getBottom()->getColor()->setARGB(‘FF993300’);
$objPHPExcel->getActiveSheet()->getStyle(‘E13’)->getBorders()->getTop()->getColor()->setARGB(‘FF993300’);
$objPHPExcel->getActiveSheet()->getStyle(‘E13’)->getBorders()->getBottom()->getColor()->setARGB(‘FF993300’);
$objPHPExcel->getActiveSheet()->getStyle(‘E13’)->getBorders()->getRight()->getColor()->setARGB(‘FF993300’);
设置填充颜色
复制代码 代码示例:
$objPHPExcel->getActiveSheet()->getStyle(‘A1’)->getFill()->setFillType(PHPExcel_Style_Fill::FILL_SOLID);
$objPHPExcel->getActiveSheet()->getStyle(‘A1’)->getFill()->getStartColor()->setARGB(‘FF808080’);
$objPHPExcel->getActiveSheet()->getStyle(‘B1’)->getFill()->setFillType(PHPExcel_Style_Fill::FILL_SOLID);
$objPHPExcel->getActiveSheet()->getStyle(‘B1’)->getFill()->getStartColor()->setARGB(‘FF808080’);
加图片
复制代码 代码示例:
$objDrawing = new PHPExcel_Worksheet_Drawing();
$objDrawing->setName(‘Logo’);
$objDrawing->setDescription(‘Logo’);
$objDrawing->setPath(‘./images/officelogo.jpg’);
$objDrawing->setHeight(36);
$objDrawing->setWorksheet($objPHPExcel->getActiveSheet());
$objDrawing = new PHPExcel_Worksheet_Drawing();
$objDrawing->setName(‘Paid’);
$objDrawing->setDescription(‘Paid’);
$objDrawing->setPath(‘./images/paid.png’);
$objDrawing->setCoordinates(‘B15’);
$objDrawing->setOffsetX(110);
$objDrawing->setRotation(25);
$objDrawing->getShadow()->setVisible(true);
$objDrawing->getShadow()->setDirection(45);
$objDrawing->setWorksheet($objPHPExcel->getActiveSheet());
//处理中文输出问题
需要将字符串转化为UTF-8编码，才能正常输出，否则中文字符将输出为空白，如下处理：
$str = iconv(‘gb2312’, ‘utf-8’, $str);
或者可以写一个函数专门处理中文字符串：
复制代码 代码示例:
function convertUTF8($str)
{
if(empty($str)) return ”;
return iconv(‘gb2312’, ‘utf-8’, $str);
}
//从数据库输出数据处理方式
从数据库读取数据如：
复制代码 代码示例:
$db = new Mysql($dbconfig);
$sql = “SELECT * FROM 表名”;
$row = $db->GetAll($sql); // $row 为二维数组
$count = count($row);
for ($i = 2; $i <= $count+1; $i++) {
$objPHPExcel->getActiveSheet()->setCellValue(‘A’ . $i, convertUTF8($row[$i-2][1]));
$objPHPExcel->getActiveSheet()->setCellValue(‘B’ . $i, convertUTF8($row[$i-2][2]));
$objPHPExcel->getActiveSheet()->setCellValue(‘C’ . $i, convertUTF8($row[$i-2][3]));
$objPHPExcel->getActiveSheet()->setCellValue(‘D’ . $i, convertUTF8($row[$i-2][4]));
$objPHPExcel->getActiveSheet()->setCellValue(‘E’ . $i, convertUTF8(date(“Y-m-d”, $row[$i-2][5])));
$objPHPExcel->getActiveSheet()->setCellValue(‘F’ . $i, convertUTF8($row[$i-2][6]));
$objPHPExcel->getActiveSheet()->setCellValue(‘G’ . $i, convertUTF8($row[$i-2][7]));
$objPHPExcel->getActiveSheet()->setCellValue(‘H’ . $i, convertUTF8($row[$i-2][8]));
}
在默认sheet后，创建一个worksheet
在这里插入一段，之前脚本学堂也为大家介绍过几篇有关phpexcel的文章，有兴趣的朋友可以看看：
使用PHPExcel判别和格式化Excel中的日期格式的例子
phpexcel导出excel的颜色与网页中颜色不一致的解决方法
CI中使用PHPExcel导出数据到Excel
复制代码 代码示例:
echo date(‘H:i:s’) . ” Create new Worksheet object\n”;
$objPHPExcel->createSheet();
$objWriter = PHPExcel_IOFactory::createWriter($objExcel, ‘Excel5’);
$objWriter-save(‘php://output’);
附，几个常用的使用方法。
复制代码 代码示例:
<?php
include ‘PHPExcel.php’;
include ‘PHPExcel/Writer/Excel2007.php’;
//或者include ‘PHPExcel/Writer/Excel5.php’; 用于输出.xls的
创建一个excel
$objPHPExcel = new PHPExcel();
保存excel—2007格式
$objWriter = new PHPExcel_Writer_Excel2007($objPHPExcel);
//或者$objWriter = new PHPExcel_Writer_Excel5($objPHPExcel); 非2007格式
$objWriter->save(“xxx.xlsx”);
直接输出到浏览器
$objWriter = new PHPExcel_Writer_Excel5($objPHPExcel);
header(“Pragma: public”);
header(“Expires: 0″);
header(“Cache-Control:must-revalidate, post-check=0, pre-check=0″);
header(“Content-Type:application/force-download”);
header(“Content-Type:application/vnd.ms-execl”);
header(“Content-Type:application/octet-stream”);
header(“Content-Type:application/download”);;
header(‘Content-Disposition:attachment;filename=”resume.xls”‘);
header(“Content-Transfer-Encoding:binary”);
$objWriter->save(‘php://output’);
?>