function mySetCookie($data, $name){    if(empty($data) || empty($name))return;    $args = func_get_args();    $time = empty($args[2])? time() + 3600 : time() + $args[2];    $path = empty($args[3])? '' : $args[3];    $domain = empty($args[4])? '' :  $args[4];    $secure = empty($args[5])? '' : $args[5];    if(is_array($data)){        foreach($data as $key => $val){            $full = "{
   $name}[$key]";            setcookie($full, $val, $time, $path, $domain, $secure);        }    }else{        setcookie($name, $data, $time, $path, $domain, $secure);    }}$data = array('name' => '李四', 'age' => 15);mySetCookie($data,'userInfo');print_r($_COOKIE);

 

//冒泡排序function arrSort(&$arr, $asc = ''){    $times = count($arr) - 1;    for($i = 0; $i < $times; $i++){        for($j = 0; $j < $times - $i; $j++){            if($arr[$j] > $arr[$j + 1]){                $temp = $arr[$j];                $arr[$j] = $arr[$j + 1];                $arr[$j + 1] = $temp;            }        }    }    if('' != $asc) $arr = array_reverse($arr, false);//反转数组元素}//选择function seleSort(&$arr){    $times = count($arr) - 1;    $jMax = count($arr);    for($i = 0; $i < $times; $i++){        $min = $arr[$i];        $minId = $i;         for($j = $i + 1; $j < $jMax; $j++){            if($min > $arr[$j]){                $min = $arr[$j];                $minId = $j;            }        }        $temp = $arr[$i];        $arr[$i] = $arr[$minId];        $arr[$minId] = $temp;    }}//插入function inserSort(&$arr){    $times = count($arr);    for($i = 1; $i < $times; $i++){        $insert = $arr[$i];        $insertId = $i - 1;        while($insertId >= 0 && $insert < $arr[$insertId]){            $arr[$insertId + 1] = $arr[$insertId];            $insertId--;        }        $arr[$insertId + 1] = $insert;    }}写一个函数，算出两个文件的相对路径。function relative_dir($fileA, $fileB){
  //A相当于B，所在目录    $aPath = explode('/',dirname($fileA));    $bPath = explode('/',dirname($fileB));    $bLen = count($bPath);    $j = 1;    for($i = 1; $i < $bLen; $i++){        if(isset($bPath) && isset($aPath)){            if($aPath[$i] == $bPath[$i]){
  $j++;}//累计相同路径部分            if($aPath[$i] != $bPath[$i]){
  $path .= '../';}//不同的，则增加退回上级        }    }    $path .= implode('/',array_slice($aPath, $j)).'/'.basename($fileA);    return $path;}$a = 'a/b/c/test/5/8/aaa.php';$b = 'a/b/c/check/1/2/3/4/bbb.php';echo relative_dir($a,$b);以附件方式实现文件下载：$file = 'e:/个人简历.doc';$file = iconv('utf-8', 'gb2312',$file);if(file_exists($file)){    $fname = basename($file);    $fsize = filesize($file);    header("Content-type:application/octet-stream");//二进制数据    header("Content-Disposition:attachment;filename={
  $fname}");//附件形式    header("Accept-ranges:bytes");    header("Accept-length:".$fsize);    readfile($file);}else{    exit('flie not found!');}遍历一个目录，及其子目录：function recurDir($pathName){    $result = array();    $temp = array();    if(!is_dir($pathName) || !is_readable($pathName)) return null;    $allFiles = scandir($pathName);    foreach($allFiles as $fileName){        if(in_array($fileName, array('.','..')))continue;        $fullName = $pathName . '/' . $fileName;        if(is_dir($fullName)){            $result[$fileName] = recurdir($fullName);        }else{            $temp[] = $fileName;        }    }    foreach($temp as $f){        $result[] = $f;    }    return $result;}$pathName = 'D:\AppServ\www\zbseoag\\';print_r(recurDir($pathName));从URL中获取文件扩展名： function getExt($url){   $arr = parse_url($url);//把URL解析成数组   $file = basename($arr['path']);   $ext = explode('.',$file);   return end($ext);}mysql事务处理： mysql_query('BEGIN'); mysql_query("INSERT INTO customerinfo(`name`) VALUES('$name1')"); mysql_query('SELECT * FROM `orderinfo` where customerid='.$id); mysql_query('COMMIT');获取用户或服务器信息：echo $_SERVER['REMOTE_ADDR']; // 或者 getenv('REMOTE_ADDR') 浏览当前页面的用户的 IP 地址。 echo gethostbyname('www.baidu.com'); //根据域名，取得IP地址echo $_SERVER['QUERY_STRING'];//查询参数字符串echo $_SERVER['SERVER_NAME'];//服务器名修改SESSION的生存时间：方法1：将php.ini中的 session.gc_maxlifetime 设置为9999方法2：$savePath = "./session_save_dir/";       $lifeTime = 100;//单位：s       session_save_path($savePath);       session_set_cookie_params($lifeTime);       session_start();PHP正则：function checkEmail($email){    $pregEmail = "/([a-z0-9]*[-_/.]?[a-z0-9]+)*@([a-z0-9]*[-_]?[a-z0-9]+)+[/.][a-z]{2,3}([/.][a-z]{2})?/i";    return preg_match($pregEmail,$email); }查看PHP支持的函数：$arr = get_defined_functions(); echo "
这里显示系统所支持的所有函数,和自定以函数"; print_r($arr); echo "
";把数据解析成变量：$a = 'Orig';$my_array = array("a" => "Cat", "b" => "Dog");extract($my_array, EXTR_PREFIX_SAME, 'the');echo '$a='.$a.'$b='.$b.'$the_a='.$the_a;文件上传：
    
    
     
      
文件：
     
     
     
     
    
$files = 'files';//files是$_FILES中的一个元素数组,并所上传文件信息进行了归类$upDir = './upImg/';$fTypes = 'jpg|gif|txt|chm';function upFilse($files, $upDir, $fTypes){    if(isset($_FILES[$files]['name'])){        if(!is_dir($upDir)) mkdir($upDir, 0777, true) or exit('上传目录创建失败！');        $ftypeArr = explode('|',$fTypes);        foreach($_FILES[$files]['name'] as $i => $value){            $fType = strtolower(end(explode(".",$_FILES[$files]['name'][$i])));            if(in_array($fType, $ftypeArr)){                $path = $upDir.time().$_FILES[$files]['name'][$i];//指定目录，且包含有文件名                move_uploaded_file($_FILES[$files]['tmp_name'][$i], $path);//移到指定目录                if($_FILES[$files]['error'][$i] == 0){                    $file[$_FILES[$files]['name'][$i]] = $path;                     list($name, $path) = each($file);//each(数组)返回当前由键名与键值所构成的数组；list(变量1, 变量n 【或数组】) = 数字索引的数组,将值赋给变量。                    $sql = "INSERT INTO `database`.`table`(name, path) VALUES ('$name', '$path')";                    $msg[] =  $value.'文件上传成功';                    }else                    $msg[] = $value.'文件上传失败！';            }else                 $msg[] = $value.'文件格式不正确！';        }        return $msg;    }}print_r(upFilse($files, $upDir, $fTypes));求今天是星期几：$time = getdate();//获取当前时间戳中的时间信息$weekday = array('星期天', '星期一', '星期二', '星期三', '星期四', '星期五', '星期六');$wday = $time['wday'];//当前是一个星期中的第几天echo date("今天是：Y年m月d日H:i:s $weekday[$wday]");求下周一是几月几日：$time = time();//当前时间戳$weekday = date('w');//当天的数字星期switch($weekday){    case 0: $next_week = $time+86400;break;//星期天则加一天    case 1: $next_week = $time+7*86400;break;//星期一,则加七天    case 2: $next_week = $time+6*86400;break;    case 3: $next_week = $time+5*86400;break;    case 4: $next_week = $time+4*86400;break;    case 5: $next_week = $time+3*86400;break;    case 6: $next_week = $time+2*86400;break;}echo date('Y-m-d',$next_week);逐行读取文件内容：$fhandle = fopen('../open.txt','rb');while(!feof($fhandle)){
  //判断是否到文件结尾    echo fgets($fhandle);//一行    echo fgetss($fhandle);//一行,且去除标记代码}fclose($fhandle);逐字读取文件内容：$fhandle = fopen('../open.txt','rb');while(($letter = fgetc($fhandle)) != false){
  //逐个循环获取每个字符    echo $letter;}fclose($fhandle);读取文件指定字符长度：$fhandle = fopen('../open.txt', 'rb');echo fread($fhandle, 3);//读取3个字符echo fread($fhandle, filesize('../open.txt'));//剩余字符绝对小于文件总大小,故可用作剩余内容的ADODB 类库操作数据库：include('adodb5/adodb.inc.php');$db_path = 'data/db_meeting.mdb';$db = ADONewConnection('access');$db->Pconnect('Driver={Microsoft Access Driver (*.mdb)};Dbq='.$db_path);$db->Execute("set names gb2312");$ADODB_FETCH_MODE = 1; $result = $db->SelectLimit($sql, $count, $offset);$result-> FieldCount();if(!$result){    echo $db->ErrorMsg();}else{    while(!$result->EOF){          $result->fields[1];    }      $result->MoveNext();//MoveFirst, MoveLast, Move(10)}格式化时间： function units($time){    $year   = floor($time / 60 / 60 / 24 / 365);//当前时间戳,最多有 $year 个整数年    $time  -= $year * 60 * 60 * 24 * 365;//减$year 年的时间    $month  = floor($time / 60 / 60 / 24 / 30);//同理向下    $time  -= $month * 60 * 60 * 24 * 30;    $week   = floor($time / 60 / 60 / 24 / 7);    $time  -= $week * 60 * 60 * 24 * 7;    $day    = floor($time / 60 / 60 / 24);    $time  -= $day * 60 * 60 * 24;    $hour   = floor($time / 60 / 60);    $time  -= $hour * 60 * 60;    $minute = floor($time / 60);    $time  -= $minute * 60;    $second = $time;    $elapse = '';    $unitArr = array('年'  =>'year', '个月'=>'month',  '周'=>'week', '天'=>'day','小时'=>'hour', '分钟'=>'minute', '秒'=>'second'    );    foreach ( $unitArr as $cn => $u )  {        if ( $$u > 0 ) {            $elapse = $$u . $cn;            break;        }    }    return $elapse;}删除数据库中没有记录的图片：public function delImg($datas, $delDir = '.'){    $arrExt = array('png','jpg','gif');    $files = scandir($dir);    foreach($files as $val){        $temp = explode('.', $val);        if(in_array(end($temp),$arrExt)){            $allFiles[] = $val;        }    }    $delFiles = array_diff($allFiles,$data);    foreach($delFiles as $val){        $file = rtrim($dir,'/').'/'.$val;        unlink($file);echo $file.'
';    } }