php 删除重复数组元素与空元素代码

//$var是要删除的元素值，$array是目标数组；
function array_del($var,$array){
 $i=0;
 foreach($array as $val){
  if($var==$val){
   unset($array[$i]);
   break;
  }
  $i++;
 }
 return $array;
}

<?php
$a=array('php','css','java','html','jquery');
$a=array_flip($a);  //将键名和值反转
unset($a['html']);  //删除指定值元素
$a=array_flip($a);  //将数组再次反转，还原数组的键名和值
var_dump($a);
?>

<?php
    $array = ('a' => "abc", 'b' => "bcd",'c' =>"cde",'d' =>"def",'e'=>"");
    array_filter($array);
    echo "<pre>";
    print_r($array);
?>

结果：

Array (

     [a] => abc

     [b] => bcd

     [c] => cde

    [d] => def

   )

<?php

$array = array('2',19,33,88,2,4,5,5,99,99,'',33,'');
function delArrayRepeat($arr){
 if(is_array($arr)){
  $arr = array_unique($arr);
  foreach($arr as $k=>$v){
   if($v==''){
    unset($arr[$k]);
   }
  }
  $result = $arr;
 }else{
  $result = "参数必需是数组！";
 }
 return $result;
}
$res = delArrayRepeat($array);
print_r($res);

?>

<?php             
 echo date("F j, Y, g:i a"). "&nbsp&nbsp&nbsp&nbsp&nbsp"; 
 echo date("m.d.y"). "&nbsp&nbsp&nbsp&nbsp&nbsp";  
 echo  date("j, n, Y"). "&nbsp&nbsp&nbsp&nbsp&nbsp";  
 echo  date("Ymd"). "&nbsp&nbsp&nbsp&nbsp&nbsp";    
 echo  date('h-i-s, j-m-y, it is w Day z '). "&nbsp&nbsp&nbsp&nbsp&nbsp";
 
 echo  date('it is the jS day.'). "&nbsp&nbsp&nbsp&nbsp&nbsp";
 
 echo  date("D M j G:i:s T Y"). "&nbsp&nbsp&nbsp&nbsp&nbsp"; 
 echo  date('H:m:s m is month'). "&nbsp&nbsp&nbsp&nbsp&nbsp"; 
 
 echo  date("H:i:s"). "&nbsp&nbsp&nbsp&nbsp&nbsp";   
 echo date('l dS of F Y h:i:s A');       
 echo date(DATE_ATOM, mktime(0, 0, 0, 7, 1, 2000));   
?>

<?php
print_r(getdate());
?>输出：

Array
(
[seconds] => 45
[minutes] => 52
[hours] => 14
[mday] => 24
[wday] => 2
[mon] => 1
[year] => 2006
[yday] => 23
[weekday] => Tuesday
[month] => January
[0] => 1138110765
)

function download($file_url,$new_name=''){
 if(!isset($file_url) || trim($file_url)==''){
  return '500';
 }
 if(!file_exists($file_url)) { //检查文件是否存在
  return '404';
 }
 $file_name=basename($file_url);
 $file_type=explode('.',$file_url);
 $file_type=$file_type[count($file_type)-1];
 $file_name=trim($new_name=='')?$file_name:urlencode($new_name).'.'.$file_type;
 $file_type=fopen($file_url,'r'); //打开文件
 //输入文件标签
 header("Content-type: application/octet-stream");
 header("Accept-Ranges: bytes");
 header("Accept-Length: ".filesize($file_url));
 header("Content-Disposition: attachment; filename=".$file_name);
 //输出文件内容
 echo fread($file_type,filesize($file_url));
 fclose($file_type);
}

< ?php   
class UserName  
{   
//定义属性   
private $name;  
//定义构造函数  
function __construct( $name )  
{  
$this->name = $name;
//这里已经使用了this指针  
}  
//析构函数  
function __destruct(){}   
//打印用户名成员函数  
function printName()  
{  
print( $this->name );
//又使用了PHP关键字this指针  
}  
}   
//实例化对象  
$nameObject = new UserName
( "heiyeluren" );   
//执行打印  
$nameObject->printName();
 //输出: heiyeluren  
//第二次实例化对象  
$nameObject2 = new UserName( "PHP5" );  
//执行打印  
$nameObject2->printName(); //输出：PHP5  
?> 

< ?php  
class Counter  
{  
//定义属性，包括一个静态变量  
private static $firstCount = 0;  
private $lastCount;  
//构造函数  
function __construct()  
{  
$this->lastCount = ++selft
::$firstCount;
 //使用PHP self关键字来调用静态变量,使用self
调用必须使用::(域运算符号)  
}  
//打印最次数值  
function printLastCount()  
{  
print( $this->lastCount );  
}   
}  
//实例化对象  
$countObject = new Counter();  
$countObject->printLastCount();
 //输出 1  
?> 

<!-- 声明一个员工类,经理类继承自员工类 -->
<?
class employee{
 protected  $sal=3000;  
 public function getSal(){
  $this->sal = $this->sal + 1200;  
  return $this->sal ;
 } 
}

class Manager extends employee {
 //如果想让经理在员工工资的基础上多发1500元.
 //必须先调用父类的getSal()方法.
 public function getSal(){  
  parent::getSal();// 这里调用了父类的方法.
  $this->sal = $this->sal + 1500;  
  return $this->sal ;
 } 
}
$emp = new employee();
echo "普通员工的工资是 " . $emp->getSal();
echo "<br>";

$manager = new Manager();
echo "经理的工资是: " . $manager->getSal();
?>