php 入门笔记 cookie 函数 session mail 数据库连接 xml

php教程 
//写cookie
setcookie("user", "wang70937", time()+60);
//session
session_start();

if(isset($_session['views']))
  $_session['views']=$_session['views']+1;

else
  $_session['views']=1;
echo "session: views=". $_session['views']."
";
?>




	
	
	
		"."[******输出******]"."
";
			echo "hello world!"."
";
			$a = "php";
			$b = "language";
			echo $a." ".$b."
";
			
			//数组
			echo "
"."[******数组******]"."
";
			$arr = array("abcde", "fghijk", "lmnopq");
			foreach($arr as $value)
			{
				echo $value."
";
			}
			
			//函数
			echo "
"."[******函数******]"."
";
			function funa($a, $b){
				echo "函数参数：".$a.", ".$b;
				return "ret_value";
			}
			$ret = funa(123, "param");
			echo "函数返回值：".$ret."
";
			
		
			echo "
"."[******表单******]"."
";
		?>
			

			name: 
			age: 
			
			
			
		";
			
			echo "
"."[******上传文件******]"."
";
		?>	
			

			filename:
			 
			

			
			
		
		"."[******session******]"."
";
			
			//retrieve session data
			echo "pageviews=". $_session['views'];
		?>
			
	
			
			
		"."[******删除session******]"."
";
			// session_destroy(); 
		?>

		"."[******发送邮件******]"."
";
			
			$to = "wang70937@163.com";
			$subject = "test mail";
			$message = "hello! this is a simple email message.";
			$from = "wang70937@gmail.com";
			$headers = "from: $from";
			mail($to,$subject,$message,$headers);
			echo "mail sent."."
";
		?>

		mysql教程数据库教程
			echo "
"."[******mysql数据库******]"."
";
			$con = mysql_connect("localhost","root","1");
			if (!$con)
  		{
  			die('could not connect: ' . mysql_error());
  		}
			else
 				echo "连接mysql成功!"."
";
			mysql_select_db("bbs", $con);
			mysql_query("set names gbk");
			//show tables
			$tablecount = mysql_query("show tables");
			while($table = mysql_fetch_array($tablecount))
			{
				//表名
				$tablename = $table[0];
				$sql = "select * from ".$tablename;
				$result = mysql_query($sql);
				
				echo "
表：[".$tablename."]
";
				//表的字段个数	
				$filedcount = mysql_num_fields($result);
				//记录条数
				$recordcount = mysql_num_rows($result);
				
				echo "sql[".$sql."] 记录条数：".$recordcount."
";
				
				if($filedcount > 0 )
				{
					echo ";
					";
					for($index=0; $index<$filedcount; $index++)
					{
						//字段名
						$filedname = mysql_fetch_field($result);
						echo "";
					}
					echo "";
					$no = 0;
					while($row = mysql_fetch_array($result))
  				{
     				$no = $no + 1;
     				echo "";
     				echo "";
     				for($index=0; $index<$filedcount; $index++)
     				{
  						echo "";
  					}
  					echo "";
  				}
					echo "

					
记录序号
$filedname->name
" . $no . "
" . $row[$index] . "
";
				
				}
			}
			
			


			mysql_close($con);
		?>

			"."********xml解析********"."
";
			
			/*$xmldoc = new domdocument();
			$xmldoc->load("note.xml");

			$x = $xmldoc->documentelement;
			foreach ($x->childnodes as $item)
  		{
 				print $item->nodename . " = " . $item->nodevalue . "
";
  		}*/
  		$xml = simplexml_load_file("note.xml");

			echo $xml->getname() . "
";

			foreach($xml->children() as $child)
  		{
  			echo $child->getname() . ": " . $child . "
";
  		}
			?>
			
			"."*******ajax*******"."
";
			?>
			
 
			first name:
			
			

			
suggestions: