PHP 小代码

//获取网上的一个文件function getUrlImage($url, $file = '', $maxExe = 0, $safe = false){    $urlExt = explode('.', $url);    $fileExt = array('txt','jpg','gif','png');    if(!in_array(end($urlExt), $fileExt, true)) return false;    $file = ($file)? $file.$urlExt : basename($url);    $file = rand(1,1000).$file;    ob_start(); //开启输出缓冲    set_time_limit($maxExe); //开启最大运行时间    readfile($url);//读入一个文件并写入到输出缓冲    $data = ob_get_contents();    ob_end_clean();    file_put_contents($file,$data);    if($safe && is_executable($file)){//为安全起见,判定一下文件是否可执行        unlink($file);        return false;    }    return $file;}getUrlImage('http://www.test.com/3675.jpg','newName');//批量生成cookiefunction mySetCookie($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  $arr[$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}//选择排序function seleSort(&$arr){    $times = count($arr) - 1;    $jMax = count($arr);    for($i = 0; $i  $arr[$j]){                $min = $arr[$j];                $minId = $j;            }        }        $temp = $arr[$i];        $arr[$i] = $arr[$minId];        $arr[$minId] = $temp;    }}//插入排序function inserSort(&$arr){    $times = count($arr);    for($i = 1; $i = 0 && $insert function addUpload(){    document.getElementById("upfiles").innerHTML += '

文件：

';}function resetUpload(){ document.getElementById("upfiles").innerHTML = '

文件：

';}

• 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: $nextMonday = $time+86400;break;//星期天则加一天 case 1: $nextMonday = $time+7*86400;break;//星期一,则加七天 case 2: $nextMonday = $time+6*86400;break; case 3: $nextMonday = $time+5*86400;break; case 4: $nextMonday = $time+4*86400;break; case 5: $nextMonday = $time+3*86400;break; case 6: $nextMonday = $time+2*86400;break;}echo date('Y-m-d',$nextMonday);//逐行读取文件指定行数的内容：function getRowData($file, $row = 0, mark = false){ $fhandle = fopen($file,'rb'); $row = ($row == 0)? filesize($file) : $row; while($row >0 && !feof($fhandle)){ $data[] = (mark)? fgets($fhandle) : fgetss($fhandle); $row--; } fclose($fhandle);}//读取文件指定字符长度function getLetterData($file, $num = 0, mark = false){ $fhandle = fopen($file,'rb'); $row = ($num)? filesize($file) : $num; $data = fread($fhandle, $num); fclose($fhandle);}//删除目录中在数据库中没有记录的图片public function delImg($data, $dir = '.'){ $files = scandir($dir); $delFiles = array_diff($allFiles,$data); foreach($delFiles as $name){ $file = rtrim($dir,'/').'/'.$name; unlink($file); echo $file.'
'; }}