php邮箱地址正则表达式实现与详解

function funcemail($str)//邮箱正则表达式
{
 return (preg_match('/^[_.0-9a-z-a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,4}$/',$str))?true:false;
}//验证方法一

$str="qbcd@126.com.cn";
preg_match("/^[0-9a-z]+@(([0-9a-z]+)[.])+[a-z]{2,3}$/",$str,$re);
print_r($re);//邮箱验证二

if (eregi("^[_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3}$",$email)) {
  echo "您的 e-mail 通过初步检查";
}//第三种邮箱验证方法

if (ereg("/^[a-z]([a-z0-9]*[-_.]?[a-z0-9]+)*@([a-z0-9]*[-_]?[a-z0-9]+)+[.][a-z]{2,3}([.][a-z]{2})?$/i; ",$email)){
 echo "your email address is correct!";}
 　　 else{
 echo "please try again!";
 }

$addr=strtr($addr,"","aao");        //第一种调用方法
$trans=array("hello"=>"hi","hi"=>"hello");      //定义一个转换数组
echo strtr("hi all, i said hello",$trans);       //第二种调用方法

//普通字符串

echo strtr("hilla warld","ia","eo");

//数组

$arr = array("hello" => "hi", "world" => "earth");
echo strtr("hello world",$arr);

function file_modify($search_contents, $replace_contents, $filename)
{
        $fp = file_get_contents($filename);
        $new_fp = str_replace($search_contents, $replace_contents, $fp);
        file_put_contents($filename, $new_fp);
}

// +------ 用法
file_modify('sdf hjhj', 'sdf_test hjhj_test', 'test10.html');

preg_replace('|(<div class="body">)(^<]+)(</div>)|iSU', "${1}" . 替换后的内容 . "$3", $str);

preg_replace('|(<div class="body">)(^<]+)(</div>)|iSU', "${1}" . 替换后的内容 . "$3", $str);

require_once ROOTPATH . "ckeditor/ckeditor.php";
$CKEditor = new CKEditor();
$CKEditor->returnOutput = true; //设置输出可用变量的情况
$CKEditor->basePath = '/ckeditor/';//设置路径
$contentarea =  $CKEditor->editor("content", $rs['contents']); //生成一个以name为content的

textarea
 
echo $contentarea;

<script type="text/javascript" src="ckeditor/ckeditor.js"></script>

<textarea cols="80" name="content" rows="10"></textarea>

function CheckAuthentication()
{

return false;//改为return false
}

session_start();
function CheckAuthentication(){
    if(isset($_SESSION['UseEidtor']))
        return true;
    else
         return  false;
}

 <script type="text/javascript" src="ckeditor/ckfinder/ckfinder.js"></script>

require_once ROOTPATH . "ckeditor/ckeditor.php";
    require_once ROOTPATH . 'ckfinder/ckfinder.php' ;
   
     $CKEditor  = new  CKEditor();
    $CKEditor->returnOutput = true;
    $CKEditor->basePath = '/ckeditor/';
 
    CKFinder::SetupCKEditor($CKEditor, '/ckfinder/') ;//注意这里是相对路径，相对于根目录，

不能用绝对路径
 
    $contentarea =  $CKEditor->editor("content", $rs['contents']);

<script type="text/javascript">
CKEDITOR.replace( 'editor1',
{
filebrowserBrowseUrl : 'ckeditor/ckfinder/ckfinder.html',
filebrowserImageBrowseUrl : 'ckeditor/ckfinder/ckfinder.html?Type=Images',
filebrowserFlashBrowseUrl : 'ckeditor/ckfinder/ckfinder.html?Type=Flash',
filebrowserUploadUrl : 'ckeditor/ckfinder/core/connector/php/connector.php?

command=QuickUpload&type=Files',
filebrowserImageUploadUrl : 'ckeditor/ckfinder/core/connector/php/connector.php?

command=QuickUpload&type=Images',
filebrowserFlashUploadUrl : 'ckeditor/ckfinder/core/connector/php/connector.php?

command=QuickUpload&type=Flash'
});
</script>

function getBaiduHotKeyWord()
{
    $templateRss = file_get_contents('http://top.baidu.com/rss_xml.php?p=top10');
    If (preg_match('/<table>(.*)</table>/is', $templateRss, $_description)) {
        $templateRss = $_description [0];
        $templateRss = str_replace("&", "&amp;", $templateRss);
    }
    $templateRss = "<?xml version="1.0" encoding="GBK"?>" . $templateRss;
    $xml = simplexml_load_String($templateRss);
    foreach ($xml->tbody->tr as $temp) {
        if (!empty ($temp->td->a)) {
            $keyArray [] = trim(($temp->td->a));
        }
    }
    return $keyArray;
}

<?
/*
抓取百度收录代码
*/
function baidu($s){
  $baidu="http://www.baidu.com/s?wd=site%3A".$s;
  $site=file_get_contents($baidu);
  //$site=iconv("gb2312", "UTF-8", $site);
  ereg("找到相关网页(.*)篇，", $site,$count);
  $count=str_replace("找到相关网页","",$count);
  $count=str_replace("篇，","",$count);
  $count=str_replace("约","",$count);
  $count=str_replace(",","",$count);
  return $count[0];
}

echo baidu(www.111cn.net); //获取好主题在百度中的收录数量

?>

<?php
/**
* * @user 小杰
* @return array 返回百度的热词数据(数组返回)
*/
function getBaiduHotKeyWord()
{
$templateRss = file_get_contents('http://top.baidu.com/rss_xml.php?p=top10');
If (preg_match('/<table>(.*)</table>/is', $templateRss, $_description)) {
$templateRss = $_description [0];
$templateRss = str_replace("&", "&", $templateRss);
}
$templateRss = "<?xml version="1.0" encoding="GBK"?>" . $templateRss;
$xml = simplexml_load_String($templateRss);
foreach ($xml->tbody->tr as $temp) {
if (!empty ($temp->td->a)) {
$keyArray [] = trim(($temp->td->a));
}
}
return $keyArray;
}
print_r(getBaiduHotKeyWord());

<?php
    $domain = “http://www.111cn.net/nokia/5230/ *欲查询的域名*/
    $site_url = ‘http://www.baidu.com/s?wd=site%3A’;
    $all = $site_url.$domain; /*域名所有收录的网址*/
    $today = $all.’&lm=1′;    /*域名今日收录的网址*/
    $utf_pattern = “/找到相关结果数(.*)个/”;
    $kz_pattern = “/<span class=”g”>(.*)</span>/”; /*用以匹配快照日期的字符串*/
    $times = “/d{4}-d{1,2}-d{1,2}/”; /*匹配快照日期的正则表达式，如:2011-8-4*/
    $s0 = @file_get_contents($all);    /*将site:www.ninthday.net的网页置入$s0字符串中*/
    $s1 = @file_get_contents($today);
    preg_match($utf_pattern,$s0,$all_num); /*匹配”找到相关结果数*个”*/
    preg_match($utf_pattern,$s1,$today_num);
    preg_match($kz_pattern,$s0,$temp);
    preg_match($times,$temp[0],$screenshot);
    if($all_num[1] == “”)
        $all_num[1] = 0;
    if($today_num[1] == “”)
        $today_num[1] = 0;
    if($screenshot[0] == “”)
        $screenshot[0] = “暂无快照”;
?>
<html>
    <head>
    <title>Test</title>
    </head>
<body>
  <table>
    <tr>
      <td>日期</td><td>百度收录</td><td>百度今日收录</td><td>百度快照日期</td>
    </tr>
    <tr>
      <td><?php echo date(‘m月d日G时’);?> </td><td><?php echo $all_num[1]; ?></td><td><?php echo $today_num[1]; ?></td><td><?php echo $screenshot[0]; ?></td>
    </tr>

  </table>
    <p>百度收录：<a href=”<?php echo $all; ?>” target=”_blank”><?php echo $all_num[1]; ?></a></p>
    <p>百度今日收录：<a href=”<?php echo $today; ?>” target=”_blank”><?php echo $today_num[1]; ?></a></p>
    <p>百度快照日期：<a href=”<?php echo $all; ?>”><?php echo $screenshot[0]; ?></a></p>
</body>
</html>