[php学习二]基本语法练习二

偏执的太偏执、 2022-09-23 05:56 158阅读 0赞

<head>
        <meta charset="UTF-8">
        <title>Second Php</title>
    </head>
    <?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; $x < count($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),"<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>";
    ?>
    
    
    
    
    
    <form method="post" action="<?php
    echo $_SERVER["PHP_SELF"];
    //echo "FirstHello.php";
    ?>">
        <h3>Name:</h3>
        <input type="text" name="Text1">
        <input type="submit" name="Button1">
        <input type="time">
    </form>
    <?php
    $InputText = $_REQUEST["Text1"];
    $InputStr  = $_REQUEST["Button1"];
    echo "POST提交内容:", $InputText, $InputStr ,"<br>";
    ?>
    
    
    <a href="<?php print $_SERVER["PHP_SELF"];?>?Param1=参数1&Param2=参数2">测试GET</a>
    <?php echo "Get Param1:" . $_GET['Param1'] . "Get Param2: " . $_GET['Param2'] . "<br>"; ?>
    
    
    <?php
      function TestVar(&$var){
          $var++;
          echo "__FUNCTION__:",__FUNCTION__,"<br>";
      }
      $x = 1;
      TestVar($x);
      echo $x . "<br>";//结果是2,&传址;
      echo "__Line__:",__LINE__,"__File__:",__FILE__,"<br>";
      echo "__Dir__:",__DIR_,"<br>";
    class TestGlobalVar{
        function MyFun1(){
            echo "__FUNCTION__",__FUNCTION__, ";__Class__:",__CLASS__,"<br>";
        }
    }
    $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。