PHP中的递归正则表达式用法

<?php
$string = "some text (a(b(c)d)e) more text";
if(preg_match("/(([^()]+|(?R))*)/",$string,$matches))
{
    echo "<pre>"; print_r($matches); echo "</pre>";
}
?>
其输出结果是:

 Array
(
    [0] => (a(b(c)d)e)
    [1] => e   
)

"/(([^()]+|(([^()]+|(([^()]+)*))*))*)/"

"/(([^()]+|(?R))*)/"

 <?php
    $string = "some text (a(b(c)d)e) more text";
    if(preg_match("/((?:[^()]+|(?R))*)/",$string,$matches))
    {
        echo "<pre>"; print_r($matches); echo "</pre>";
    }
?>
产生的结果相同:

 Array
    (
     [0] => (a(b(c)d)e)
    )

function funcMtel($str)//手机号码正则表达试
{
 return (preg_match("/(?:13d{1}|15[03689])d{8}$/",$str))?true:false;
}

function funcMtel($str)//手机号码正则表达试
{
 return (preg_match("/(?:1[3|4|5|8]d{1}|15[03689])d{8}$/",$str))?true:false;
}

$post_data = array();
$post_data['clientname'] = "test08";
$post_data['clientpasswd'] = "test08";
$post_data['submit'] = "submit";
$url='http://xxx.xxx.xxx.xx/xx/xxx/top.php';
$o="";
foreach ($post_data as $k=>$v)
{
    $o.= "$k=".urlencode($v)."&";
}
$post_data=substr($o,0,-1);
$ch = curl_init();
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_URL,$url);
//为了支持cookie
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookie.txt');
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
$result = curl_exec($ch);

require_once 'PHPExcel.php'; 

////require_once'PHPExcel/Writer/Excel5.php';     // 用于其他低版本xls 

// or 

////require_once'PHPExcel/Writer/Excel2007.php'; // 用于excel-2007 格式 

// 创建一个处理对象实例 

$objExcel = new PHPExcel(); 

// 创建文件格式写入对象实例, uncomment 

////$objWriter = newPHPExcel_Writer_Excel5($objExcel);     // 用于其他版本格式  

// or 

////$objWriter = newPHPExcel_Writer_Excel2007($objExcel); // 用于2007 格式 

$objProps = $objExcel->getProperties ();

//设置创建者

$objProps->setCreator ( 'XuLulu');

//设置最后修改者

$objProps->setLastModifiedBy("XuLulu");

//描述

$objProps->setDescription("摩比班级");

//设置标题

$objProps->setTitle ( '管理器' );

//设置题目

$objProps->setSubject("OfficeXLS Test Document, Demo");

//设置关键字

$objProps->setKeywords ( '管理器' );

//设置分类

$objProps->setCategory ( "Test");

//工作表设置

$objExcel->setActiveSheetIndex( 0 );

$objActSheet = $objExcel->getActiveSheet ();

//单元格赋值   例：

$objActSheet->setCellValue ( 'A1', 'ID');

$objActSheet->setCellValue ( 'B1', 'HashCode');

$objActSheet->setCellValue ( 'C1', 'ModelName');

$objActSheet->setCellValue ( 'D1', 'IndexName');

$objActSheet->setCellValue('A1', '字符串内容');  // 字符串内容  

$objActSheet->setCellValue('A2', 26);            // 数值 

$objActSheet->setCellValue('A3', true);          // 布尔值 

$objActSheet->setCellValue('A4', '=SUM(A2:A2)'); // 公式

//自动设置单元格宽度   例：

$objActSheet->getColumnDimension('A')->setAutoSize(true);

//手动设置单元格的宽度   例：

//$objActSheet->getColumnDimension('A')->setWidth(10);

//导出的文件名

$outputFileName = iconv ( 'UTF-8', 'gb2312', 'XuLulu_'. time() . '.xlsx' );

//直接导出文件

$objWriter->save ( $outputFileName );

//文件直接输出到浏览器

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-excel');

header ( 'Content-Type:application/octet-stream');

header ( 'Content-Type:application/download');

header ( 'Content-Disposition:attachment;filename='. $outputFileName );

header ( 'Content-Transfer-Encoding:binary');

$objWriter->save ( 'php://output');

其他设置：

//显式指定内容类型  

$objActSheet->setCellValueExplicit('A5','847475847857487584',

PHPExcel_Cell_DataType::TYPE_STRING); 

//合并单元格  

$objActSheet->mergeCells('B1:C22'); 

//分离单元格  

$objActSheet->unmergeCells('B1:C22');

//得到单元格的样式

$objStyleA5 = $objActSheet->getStyle('A5');

//设置字体 

$objFontA5 = $objStyleA5->getFont(); 

$objFontA5->setName('Courier New'); 

$objFontA5->setSize(10); 

$objFontA5->setBold(true); 

$objFontA5->setUnderline(PHPExcel_Style_Font::UNDERLINE_SINGLE); 

$objFontA5->getColor()->setARGB('FF999999');  

//设置对齐方式

$objAlignA5 = $objStyleA5->getAlignment(); 

$objAlignA5->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_RIGHT); 

$objAlignA5->setVertical(PHPExcel_Style_Alignment::VERTICAL_CENTER);

//设置边框 

$objBorderA5 = $objStyleA5->getBorders(); 

$objBorderA5->getTop()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN); 

$objBorderA5->getTop()->getColor()->setARGB('FFFF0000');// color 

$objBorderA5->getBottom()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN); 

$objBorderA5->getLeft()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN); 

$objBorderA5->getRight()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN); 

//设置填充颜色 

$objFillA5 = $objStyleA5->getFill(); 

$objFillA5->setFillType(PHPExcel_Style_Fill::FILL_SOLID); 

$objFillA5->getStartColor()->setARGB('FFEEEEEE'); 

//从指定的单元格复制样式信息. 

$objActSheet->duplicateStyle($objStyleA5,'B1:C22'); 

//************************************* 

//添加图片 

$objDrawing = new PHPExcel_Worksheet_Drawing(); 

$objDrawing->setName('ZealImg'); 

$objDrawing->setDescription('Image inserted byZeal'); 

$objDrawing->setPath('./zeali.net.logo.gif'); 

$objDrawing->setHeight(36); 

$objDrawing->setCoordinates('C23'); 

$objDrawing->setOffsetX(10); 

$objDrawing->setRotation(15); 

$objDrawing->getShadow()->setVisible(true); 

$objDrawing->getShadow()->setDirection(36); 

$objDrawing->setWorksheet($objActSheet); 

//添加一个新的worksheet 

$objExcel->createSheet(); 

$objExcel->getSheet(1)->setTitle('测试2'); 

//保护单元格 

$objExcel->getSheet(1)->getProtection()->setSheet(true); 

$objExcel->getSheet(1)->protectCells('A1:C22','PHPExcel');

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8" />
    <title>Getting started with dates in php5</title>
</head>
<body>
<?php
date_default_timezone_set('Asia/Shanghai');
echo "Today is ",date('l');
?>
</body>
</html>

<?php
    $mytime=strtotime("7:50pm June 26 2011");
    echo "Today is ",date('Y-m-d g:i:sa', $mytime);
?>
输出：

Today is 2011-06-26 7:50:00pm

<?php
$startdate = strtotime('next Tuesday');
$enddate = strtotime('+16 weeks', $startdate);
$currentdate = $startdate;
echo '<ol>';
while($currentdate < $enddate):
    echo "t<li>", date('M d', $currentdate);
    $currentdate = strtotime('+1 week', $currentdate);
endwhile;
echo '</ol>';
?>