php删除文件程序代码

if (unlink($file_delete)) {
echo "The file was deleted successfully.", "n";
} else {
echo "The specified file could not be deleted. Please try again.", "n";
}

$myfile = "./test1.txt";
if (file_exists($myfile)) {
$result=unlink ($myfile);
echo $result;
}
?>

function delFileUnderDir( $dirName="../Smarty/templates/templates_c" )
{
if ( $handle = opendir( "$dirName" ) ) {
   while ( false !== ( $item = readdir( $handle ) ) ) {
   if ( $item != "." && $item != ".." ) {
   if ( is_dir( "$dirName/$item" ) ) {
         delFileUnderDir( "$dirName/$item" );
   } else {
   if( unlink( "$dirName/$item" ) )echo "成功删除文件： $dirName/$item<br />n";
   }
   }
   }
   closedir( $handle );
}
}delDirAndFile( 'www.111cn.net');

<?php
header("content-Type: text/html; charset=utf-8");
//配置开始
$path=".";//在些设置所删除的目录.为当前目录 如：删除path目录，引号里请添path;
$guolv="del.php,install.php,path";//设置需要过滤的文件或文件夹用英文状态下,号分隔
//配置结束
if($_GET['action']=="del"){
 $file= array_values_recursive(recurdir($path,$guolv));
 foreach($file as $k => $v){
  remove_directory($v);
 }
}else{
 echo "您的配置如下<br>
 要删除的目录为：
 ";
 if($path==".")echo "当前目录";else echo $path;
 echo "<br>您要过滤的文件或文件夹有：".$guolv."<br>
 如果确认过滤请<a href='?action=del'>点击此处开始删除相应的目录及目录下的所有文件</a>，如果配置不正确请到文件中修改
 ";
}

//删除目录及文件
function remove_directory($dir) {
  foreach(glob($dir) as $fn) {
    echo " removing $fn<br>n";
  if (!is_writable($fn))@chmod($fn, 0777);
  if(is_dir($fn)){@rmdir($fn);}else{@unlink($fn);}
   }
}
//扫描目录
function recurdir($pathname,$guolv='del.php')
{
 $result=array();$temp=array();
 //检查目录是否有效和可读
 if(!is_dir($pathname) || !is_readable($pathname))
 return null;
 //得到目录下的所有文件夹
 $allfiles=scandir($pathname);
 foreach($allfiles as $key => $filename)
 {
  //如果是“.”或者“..”的话则略过
  if(in_array($filename,array('.','..')))continue;
  if(count($guolv)>0){$lv=explode(",",$guolv);if(in_array($filename,$lv))continue;}
 
  //得到文件完整名字
  $fullname =$pathname . "/" .$filename;
  //如果该文件是目录的话，递归调用recurdir
  $temp[]=$fullname;
  if(is_dir($fullname)){
   $nowpath=explode("/",$fullname);
   if(count($guolv)>0){$lv=explode(",",$guolv);if(in_array($nowpath[count($nowpath)-1],$lv))continue;}
   $result[$filename] = recurdir($fullname);}
 }
 //最后把临时数组中的内容添加到结果数组，确保目录在前，文件在后
 foreach($temp as $f){
  $result[]=$f;
 }
 return $result;
}
//获取所有文件
function array_values_recursive($ary)
{
   $lst = array();
   foreach( array_keys($ary) as $k ){
  $v = $ary[$k];
  if (is_array($v)) {$lst = array_merge( $lst, array_values_recursive($v));}else{$lst[] = $v;}
   }
   return $lst;
}
?>

(1)     ANSI编程环境下:

$strtest = “yyg中文字符yyg”;

$pregstr = "/([".chr(0xb0)."-".chr(0xf7)."][".chr(0xa1)."-".chr(0xfe)."])+/i";

if(preg_match($pregstr,$strtest,$matchArray)){

echo $matchArray[0];

}

//output:中文字符

(2)     Utf-8编程环境下:

$strtest = “yyg中文字符yyg”;

$pregstr = "/[x{4e00}-x{9fa5}]+/u";

if(preg_match($pregstr,$strtest,$matchArray)){

echo $matchArray[0];

}

//output:中文字符

<?php
function convert($size){
$unit=array('b','kb','mb','gb','tb','pb');
return @round($size/pow(1024,($i=floor(log($size,1024)))),2).' '.$unit[$i];
}
echo convert(memory_get_usage(true));
?>

if (!function_exists('memory_get_usage')) 

 {
     function memory_get_usage() 

     {

        $pid = getmypid();

       if (IS_WIN) 

       {

            exec('tasklist /FI "PID eq ' . $pid . '" /FO LIST', $output);

             return preg_replace('/[^0-9]/', '', $output[5]) * 1024;

         } 

         else

        {

           exec("ps -eo%mem,rss,pid | grep $pid", $output);

           $output = explode(" ", $output[0]);

           return $output[1] * 1024;

         }

    }

}

/* autoload.php */   
<?php    
function __autoload($classname) {
  require_once ($classname . “class.php”);
}    
$person = new Person(”Altair”, 6);
var_dump ($person);
?>    

$paths[] = BP . DS . ‘app’ . DS . ‘local’;
$paths[] = BP . DS . ‘app’ . DS . ‘base’;
$paths[] = BP . DS . ‘lib’;

$appPath = implode(PS, $paths);
set_include_path($appPath . PS . get_include_path());

class Autoload {

/**
* 自身对象
*
*/
protected static $_instance = null;

public function __construct() {

}

/*
* 实例化自身
*
*/

public static function instance() {
if (null == self::$_instance) {
self::$_instance = new self();
}

return self::$_instance;
}

/**
*
* 注册自动加载函数
*/
public static function register() {
spl_autoload_register(array(self::instance(), ‘autoload’));
}

/*
*
* 自动加载类
*/

public function autoload($class) {
if (!is_string($class)) {
return;
}

$classFile = str_replace(‘ ‘, DS, ucwords(str_replace(‘_’, ‘ ‘, $class)));
$classFile .= ‘.php’;
return include $classFile;
}

}

<html>
<head>
<title>获取复选框的值</title>
</head>
<body>
<form action="result.php" method="POST">
<input type="checkbox" name="year[]" value="1">1 &nbsp;&nbsp;
<input type="checkbox" name="year[]" value="2">2 &nbsp;&nbsp;
<input type="checkbox" name="year[]" value="3">3 <br>

<input type="submit" value="提交" />
</form>
</body>
</html>

<?php
foreach($_POST['year'] as $item){
echo $item."<br>";
}
?>