[php learning 2] Basic grammar exercises 2

The basic syntax of

    <meta charset="UTF-8">
    <title>Second Php</title>

<?php /**
 * Created by PhpStorm.
 * User: liyanq
 * Date: 16/7/5
 * Time: 13:15
 */
/*
 * 1,什么头都不加的话,显示乱码,知道是编码格式问题,拷过来就好了;但还不了解上面语法,以后再说吧.
 * 2,汉字的排序不是按照拼音的首字母来的.
 * 3,sort,rsort普通数组;asort,ksort,arsort,krsort关联数组;
 * */

$names = array("梅西","c罗","贝尔");
$nameAndage = array("梅西"=>29,"C罗"=>31,"贝尔"=>26);
function NormalarrToStr($arr){
    $r = "";
    for ($x = 0; $x  $xValue){
        $r = $r . " " . "[$xValue]$x";
    }
    return $r;
}
echo "排序前:",NormalarrToStr($names),"<br>";
sort($names);
echo "排序后:",NormalarrToStr($names),"<br>";

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

/*
 * 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,'<br>';
echo $_SERVER["PHP_SELF"],'<br>';
echo $_SERVER["SERVER_NAME"],'<br>';
echo $_SERVER["HTTP_HOST"],"<br>";
echo $_SERVER["SERVER_ADDR"],"<br>";
echo $_SERVER["REQUEST_METHOD"],"<br>";
echo $_SERVER["REMOTE_ADDR"],"<br>";
echo $_SERVER["SCRIPT_FILENAME"],"<br>";
?>

<!--1,才知道form里的Action里面的Echo是起到页面导航用的.-->
<!--2,不写或者echo $_SERVER["PHP_SELF"];都是提交后返回自己页面.-->
<!--3,导航其他页面,不用写绝对路径.-->
<!--显示Post提交的内容:$_REQUEST和POST是一对儿;-->

">

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(); ?> is almost there.

The above introduces [php learning 2] basic grammar exercise 2, including aspects of content. I hope it will be helpful to friends who are interested in PHP tutorials.