[php学习二]基本语法练习二

    
    

29,"C罗"=>31,"贝尔"=>26);
function NormalarrToStr($arr){
    $r = "";
    for ($x = 0; $x < count($arr); $x ++){
        $r = $r . " " . $arr[$x];//用.链接字符串真别扭啊~!
    }
    return $r;
}
function KeyValueArrToStr($arr){
    $r = "";
    foreach($arr as $x => $xValue){
        $r = $r . " " . "[$xValue]$x";
    }
    return $r;
}
echo "排序前:",NormalarrToStr($names),"
";
sort($names);
echo "排序后:",NormalarrToStr($names),"
";

echo "排序前:",KeyValueArrToStr($nameAndage),"
";
ksort($nameAndage);
echo "排序后:",KeyValueArrToStr($nameAndage),"
";

/*
 * 1,$GLOBALS是一个包含了全部变量的全局组合数组。变量的名字就是数组的键;
 * 2,$GLOBALS里面的内容都挺有用的.可以搜集客户信息.http://www.runoob.com/php/php-superglobals.html
 * 3,$_REQUEST能够获取HTML表单提交的数据,只要知道Input的名字即可.可理解2页面的通讯通道;
 * */
$x = 25;$y=75;
function TestGlobals(){
    global $x;
   $GLOBALS['z'] = $x + $GLOBALS['ya'];
}
TestGlobals();
echo $z,'
';
echo $_SERVER["PHP_SELF"],'
';
echo $_SERVER["SERVER_NAME"],'
';
echo $_SERVER["HTTP_HOST"],"
";
echo $_SERVER["SERVER_ADDR"],"
";
echo $_SERVER["REQUEST_METHOD"],"
";
echo $_SERVER["REMOTE_ADDR"],"
";
echo $_SERVER["SCRIPT_FILENAME"],"
";
?>





">
    
Name:
    
    
    

";
?>


?Param1=参数1&Param2=参数2">测试GET
"; ?>


";
  }
  $x = 1;
  TestVar($x);
  echo $x . "
";//结果是2,&传址;
  echo "__Line__:",__LINE__,"__File__:",__FILE__,"
";
  echo "__Dir__:",__DIR_,"
";
class TestGlobalVar{
    function MyFun1(){
        echo "__FUNCTION__",__FUNCTION__, ";__Class__:",__CLASS__,"
";
    }
}
$V1 = new TestGlobalVar();
$V1->MyFun1();

class MyBase{
    function SayHello(){
        echo "Hello";
    }
}
//trait这个语法没有见到过,需要留意下.~
trait TraitSay{
    public function SayHello(){
        parent::SayHello();
        echo "World";
    }
}
class MyChild extends MyBase{
    use TraitSay;
}
$c = new MyChild();
$c->SayHello();
?>

基本语法差不多了。