小编Gab*_*ono的帖子

我如何确定使用PHP代码,例如,我有一个具有值的变量

• 在1到10之间,或
• 在20到40之间？

我无法理解为什么连接到数据库的功能不起作用,我已经三次检查变量是否有任何错误.

在第12行的class.php上使用mysql_error函数我收到以下错误:

No database selected

class.php

 <?php

class blog {
    private $host;
    private $username;
    private $password;
    private $db;
    private $link;

    public function __construct($host, $username, $password, $db){
    $this->link = mysql_connect($host, $username, $password, $db);
    mysql_select_db($this->db, $this->link) or die (mysql_error());

    }

    function get_content(){
    $sql = "SELECT * FROM content";
    $res = mysql_query($sql);
    while($row = mysql_fetch_assoc($res)){
        echo '<h1>'.$row['title'].'</h1>';
        echo '<p>'.$row['body'].'</p>';
        }
    }
}// End of Class
?>

的index.php

  <?php include 'includes/class.php' ?>
<?php


//Setup Connection
$obj = new blog('localhost', 'root', '', 'blog');

//Connect to …

当我放置这个AddEventListener时,我收到了" Type Coercion failed message"

addEventListener(Event.ENTER_FRAME,onEnterFrm);

位于鼠标事件上方:

        addEventListener(Event.ENTER_FRAME,onEnterFrm);
        stage.addEventListener(MouseEvent.CLICK, _clicked);

我无法看到导致错误的介于两者之间的关系.

//单击功能

         private function _clicked(e:MouseEvent)
     {
        gameBall = sim.addCircle({x:(mouseX/30), y:(1), radius:0.25, density:5});
     }

// OnEnterFrn函数

     private function onEnterFrm(e:MouseEvent):void
     {          
        if (gameBall && gameBall.body.IsSleeping())
            {
                gameBall.destroy();
                gameBall = null;
            }  
    }

如果我点击运行,模拟工作但是滞后,并且弹出运行时消息:

TypeError: Error #1034: Type Coercion failed: cannot convert flash.events::Event@2a03b2e1 to flash.events.MouseEvent.

完整代码:

package  {

import flash.display.MovieClip;
import com.actionsnippet.qbox.*;  
import flash.events.MouseEvent;
import flash.events.Event;

[SWF(width = 600, height = 600, frameRate = 60)]  

public class …

我正在使用QuickBox2D.

我使用以下声明丢球.

            gameBall = sim.addCircle({x:(mouseX/30), y:(2), radius:0.15, density:1, restitution:0.7, friction:0, skin:ball, scaleSkin:false, angularDamping:20});

在if语句期间,我想在Object中更改两个值:

                gameBall({friction:1,restitution:0});

我收到以下错误:

Call to a possibly undefined method gameBall.

完整代码:

package  {

import flash.display.MovieClip;
import com.actionsnippet.qbox.*;  
import flash.events.MouseEvent;
import flash.events.Event;

[SWF(width = 300, height = 600, frameRate = 60)]  

public class LuckyHitBeta extends MovieClip {

    public var sim:QuickBox2D;
    var winBox:QuickObject;
    var looseBox:QuickObject;
    var looseBox2:QuickObject;
    var gameBall:QuickObject;
    var simContacts:QuickContacts;
    var isFiring:Boolean=false;
    var ballIcon:ballIcon_mc;



    /**
     * Constructor
     */
    public function LuckyHitBeta()
    {   
        liveIcon();
        sim = new …

我有一个数组存储国家/地区(密钥)和年龄预期(值)的名称.

$countries = array(  
  'Costa Rica' => 78, 'Puerto Rico' => 78, 'Colombia' => 73, 
  'Nicaragua' => 73, 'El Salvador' => 72, 'Peru' => 71,
  'Argentina' => 75, 'Uruguay' => 76, 'Ecuador' => 75,
  'Mexico' => 76, 'Venezuela' => 73, 'Brasil' => 72,
);

html表单创建一个新变量($country),其名称对应于上面列出的一个国家/地区.例如:"Costa Rica"

如何返回一个变量,其数字(年龄预期)与$country变量中的国家/地区名称相匹配？
举个例子:

Costa Rica = 78
$ageExpectancy = 78;

谢谢,我希望简明扼要.

我想为我当前的游戏添加一些额外的纹理,让我们说在所有内容之上叠加的grunge纹理.

我的整个项目(背景图像除外)都设置在主类上.

可能吗？怎么样？

截图: