web开发入门第二章创建PHP页面1

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按书上的知识点，自己动手练习练习

<?phpsession_start();//$_SESSION['name'] = $_GET['name'];$_SESSION['name'] = $_REQUEST['name'];$_SESSION['passwd'] = $_GET['passwd'];$_SESSION['authuser'] = 0;//Check name and passwd informationif (($_SESSION['name'] == 'luoz') and    ($_SESSION['passwd'] == '123456')) {    $_SESSION['authuser'] = 1;} else {    echo 'Sorry, but you don\'t have permission to view this page!';    exit();     }?><html> <head>  <title>My First PHP Program</title> </head> <body><?php//转义实现/*echo "<h1>I'm \"a\" lumberjack.</h1>";echo "<h2>And I'm okay.</h2>";echo '<h1>I\'m "a" lumberjack.</h1>';*///heredoc $num = 1;$str = <<<OOO<h1>I'm "a" lumberjack.</h1><h3>And I'm okay.</h3> $num  $nbsp;<h1>I'm "a" lumberjack.</h1>OOO;echo $str;//通过GET方式传送变量echo $_GET['name'];echo "<br />*********************** <br /> ";//常量define(CONST_VALUE, "I am a const value!");echo CONST_VALUE;echo "<br />*********************** <br /> ";//变量$value = 1.1211;echo $value + 1;echo "<br />*********************** <br /> ";$value2 = "2";echo $value2 + 1;echo "<br />*********************** <br /> ";$arr[] = "F";$arr[] = "U";$arr[] = "C";$arr[] = "K";print_r($arr);echo "<br />*********************** <br /> ";foreach($arr as $index => $val){if($arr[$index] == $val){echo "$arr[$index]"."  ";}}echo "<br />*********************** <br /> ";echo max($arr);echo "<br />*********************** <br /> ";//页面间传递变量:GET方式//echo "<a href='index.php?name=lz&id=2'>Click Me!</a>";//特殊字符如空格等的处理$strr = "luo zhun";//urlencode("luo zhun");echo "<a href='moviesite.php?favmovie=$strr&id=2'>Click Me!</a>";//查看PHP 日志,方法1:修改PHP.ini文件; 方法2：采用代码方式打开，如下ini_set("display_errors", "On");error_reporting(E_ALL | E_STRICT);//echo $_GET["121"];//页面间传递变量：SESSION方式见上面 （$_REQUEST 与 $_GET的区别）?> </body></html>

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web开发入门 第二章 创建PHP页面1

web开发入门第二章创建PHP页面1