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‎README.md

Whitespace-only changes.

‎cal.php

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<?php
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$a = $_POST['a'];
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$b = $_POST['b'];
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$c = $_POST['c'];
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$d = $b * $b - 4*$a*$c;
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if ($d > 0) {
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echo "有两个解";
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$jie1 = (-$b + pow($d, 0.5)) / (2*$a);
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$jie2 = (-$b - pow($d, 0.5)) / (2*$a);
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echo "$jie1,$jie2";
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}
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if ($d == 0) {
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echo "有一个解";
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$jie1 = (-$b) / (2*$a);
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echo "$jie1";
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}
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if ($d < 0) {
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echo "无解";
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}
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?>

‎conSQL.php

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<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>无标题文档</title>
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</head>
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<body>
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<?php
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mysql_connect("root","root");
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mysql_query("set names utf8");
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mysql_query("user liuyanban");
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?>
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</body>
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</html>

‎dbdemo/conn.php

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<?php
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$uname = "root";
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$host = "127.0.0.1:3306";
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$pwd = "root";
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$link = mysql_connect($host,$uname,$pwd);
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mysql_query("set names `uft8`")
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//var_dump($link);
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?>

‎dbdemo/showdb.php

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<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>无标题文档</title>
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</head>
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<body>
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<?php
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require("conn.php");
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//显示所有数据库
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if($link){
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//echo '连接成功';
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$res = mysql_query("show databases",$link);
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//var_dump($res);
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echo "Database<br/>";
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while ($row = mysql_fetch_array($res)) {
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echo "<a href='table.php?dbName={$row['Database']}' > {$row['Database']} </a> | 结构 | 定义 <br />";
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}
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mysql_free_result($res);
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mysql_close($link);
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}else{
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echo '连接失败';
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}
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?>
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</body>
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</html>

‎dbdemo/table.php

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<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<?php
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$dbName = $_GET['dbName'];
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?>
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<title><?php echo '表'.$dbName?></title>
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</head>
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<body>
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<?php
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require('conn.php');
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$sql = "use $dbName";
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$res = mysql_query($sql,$link);
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if(!$res){
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echo "sql失败:".$sql."<br />";
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echo "错误代码:".mysql_errno()."<br />";
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echo "错误信息:".mysql_error()."<br />";
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die();
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}
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//显示所有表
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$sql = "show tables";
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$res = mysql_query($sql,$link);
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if(!$res){
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echo "sql失败:".$sql."<br />";
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echo "错误代码:".mysql_errno()."<br />";
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echo "错误信息:".mysql_error()."<br />";
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die();
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}
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echo "<table border='1'>";
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while ($row = mysql_fetch_assoc($res)) {
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echo "<tr>";
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echo "<td>";
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echo "{$row['Tables_in_'.$dbName]}";
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echo "</td>";
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echo "</tr>";
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}
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echo "</table>"
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?>
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</body>
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</html>

‎demo.php

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<?php
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if (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== FALSE) {
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?>
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<h3>True</h3>
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<?php
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}else{
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?>
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<h3>False</h3>
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<?php
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}
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?>
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<form name="f1" action="do.php" method="post">
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<input name="name" />
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<input name="age" />
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<input type="submit" />
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</form>
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<?php
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$array = array(
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"foo" => "bar" ,
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"bar" => "foo" );
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echo "-------------------"."<br/>";
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$array1 = [
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'foo' => 'bar',
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'bar' => 'foo'
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];
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var_dump($array1);
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?>
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<br/>
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<?php
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var_dump($array);
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?>
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<?php
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$array2 = array(
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'foo' => 'bar',
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'bar' => 'foo',
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100 => -100,
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-100 => 100 );
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echo "<br/>";
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var_dump($array2);
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?>
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<br/>
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<?php
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$array3 = array('foo','bar','hello','world');
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var_dump($array3);
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?>
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<br/>
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<?php
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$arr = array(
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'foor' => 'bar',
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42 => 24,
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"multi" => array(
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'dimensional' => array(
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'array' => foo
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)
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));
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?>

‎do.php

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<?php echo htmlspecialchars($_POST['name']); ?>,,,
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<?php echo (int)$_POST['age']; ?>

‎doswitch.php

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<?php
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$year = $_POST['year'];
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$month = $_POST['month'];
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switch ($month) {
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case '1':
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case '3':
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case '5':
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case '7':
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case '8':
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case '10':
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case '12':
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echo "31天";
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break;
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case '4':
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case '6':
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case '9':
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case '11':
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echo "30天";
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break;
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case ' 2':
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if ($year % 4 == 0 && $year % 100 != 0 || $year % 400 ==0 ) {
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echo "29天";
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}else{
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echo "28天";
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}
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break;
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}
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?>

‎form.html

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<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>无标题文档</title>
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</head>
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<body>
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<form action="getForm.php" method="post">
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Name:<input type="text" size="3" name="name">
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Pwd:<input type="password" name="pwd">
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<input type="submit" value="提交">
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</form>
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----------------------------------------------------------------
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<form action="cal.php" method="post">
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<input type="text" size="3" name="a">X<sup>2</sup>
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+
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<input type="text" size="3" name="b">X
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+
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<input type="text" size="3" name="c">
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=
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0
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<input type="submit" value="计算" />
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</form>
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</body>
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</html>

‎function1.php

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<?php
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function showCity($str1,$str2="默认2",$str3="默认3"){
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echo "$str1,$str2,$str3";
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}
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showCity("abc","bcd",20);
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showCity("456");
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?>

‎function2.php

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<?php
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$str = "abc";
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function foo(){
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global $str; //
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echo "$str";
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}
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foo();
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?>

‎getForm.php

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<?php
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$name = $_POST['name'];
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$pwd = $_POST['pwd'];
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echo "$name,$pwd";

‎hbh.php

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<?php
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//案例： 有红、白、黑三种球若干个，其中红、白球共25个，白、黑球共31个，红、黑球共28个，
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//求这三种球各多少个？
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//请同时计算出使用了多少次循环——找出最少的循环次数
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//用于记录循环了多少次（才找出答案）
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$count = 0;
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for ($hong=1;$hong<=25;$hong++) {
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for ($bai=1; $bai <= 25; $bai++) {
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for ($hei=1; $hei <= 28 ; $hei++) {
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$count ++ ;
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if($hong+$bai == 25 && $bai + $hei == 31 && $hong + $hei == 28){
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echo "$hong,$bai,$hei";
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}
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}
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}
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}
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echo "循环$count";
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echo "<h3>优化1</h3>";
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$count=0;
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for ($hong=1;$hong<=25;$hong++) {
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for ($bai=1; $bai <= 25; $bai++) {
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for ($hei=1; $hei <= 28 ; $hei++) {
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$count ++ ;
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if($hong+$bai == 25 && $bai + $hei == 31 && $hong + $hei == 28){
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echo "$hong,$bai,$hei";
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break 3;
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}
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}
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}
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}
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echo "循环$count";
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echo "<h3>优化2</h3>";
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$count = 0;
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for ($hong=1; $hong <= 25; $hong++) {
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$bai = 25 - $hong;
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$hei = 28 - $hong;
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$count ++ ;
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if($bai + $hei == 31){
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echo "红球$hong ，白球$bai, 黑球$hei";
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break;
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}
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}
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echo "循环$count";
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?>

‎index.php

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<?
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$name = 'Lee';
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$j = 'Hello';
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$str = $j.$name;
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echo $str;
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$i = 10;
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$s1 = "abcdef$i";
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$s2 = 'abcdef';
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$s3 = <<<ABCD1
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你好啊汪汪汪汪$i......
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<br />你好你好你好
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<br /> 哈哈哈哈哈哈哈哈
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<script>
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alert("hello");
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</script>
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ABCD1;
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echo $s1;
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echo $s2;
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echo $s3;

‎message/conSQL.php

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<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>无标题文档</title>
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</head>
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<body>
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<?php
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mysql_connect("root","root");
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mysql_query("set names utf8");
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mysql_query("user liuyanban");
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?>
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</body>
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</html>

‎message/guestbook-html/1建立站点.txt

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//1：在hosts文件中建立域名ip对应关系：
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127.0.0.1 www.liuyanban.com
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//2：在apache配置文件中建立新站点：
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<VirtualHost *:80>
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ServerName www.liuyanban.com
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DocumentRoot "E:\.......\guestbook-html"
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<Directory "E:\.......\guestbook-html">
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Options Indexes
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Order deny,allow
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allow from all
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</Directory>
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</VirtualHost>
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//3：重启wamp所有服务。

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