php 初階 - 課程一
Benson Lu
2014
PHP
Hypertext Preprocessor
課程目標
BUILDING
A
DYNAMIC WEBSITE
課程目標
<!DOCTYPE html>
<html>
<head>
<link type='text/css' rel='stylesheet' href='style.css'/>
<title>PHP!</title>
</head>
<body>
<img src="http://i1061.photobucket.com/albums/t480/ericqweinstein/php-logo_zps408c82d7.png"/>
<div class="header"><h1>
<?php
$welcome = "Let's get started with PHP!";
echo $welcome;
?>
</h1></div>
<p><strong>Generate a list:</strong>
<?php
for ($number = 1; $number <= 10; $number++) {
if ($number <= 9) {
echo $number . ", ";
} else {
echo $number . "!";
}
}; ?>
</p>
<p><strong>Things you can do:</strong>
<?php
$things = array("Talk to databases",
"Send cookies", "Evaluate form data",
"Build dynamic webpages");
foreach ($things as $thing) {
echo "<li>$thing</li>";
}
unset($thing);
?>
</p>
<p><strong>This jumbled sentence will change every time you click Submit!<strong></p>
<p>
<?php
$words = array("the ", "quick ", "brown ", "fox ",
"jumped ", "over ", "the ", "lazy ", "dog ");
shuffle($words);
foreach ($words as $word) {
echo $word;
};
unset($word);
?>
</p>
</body>
</html>
基本要求
HtML
&
CSS
Stack
Database
MySQL
Scripting Language
PHP
Apache
Web Server
Operating System
安裝
PHP
php -vAMPPS (ALL)
XAMPP (ALL)
PHP-OSX (Mac – PHP Only)
Bitnami Stacks (All)
WAMP (Windows)
Zend Server Community Edition (All)
PHP + MySQL + Apache
(MAC 內建)
Syntax
<?php ⋯⋯ ?>
所有程式碼都寫在這裏面
然後儲存成
xxx.php
基本輸出
echo
<?php
echo "Hello, Welcome to Asukademy!";
?>
Hello, Welcome to Asukademy!
基本輸出
echo
<?php
echo "Hello, Welcome to Asukademy!";
?>Hello, Welcome to Asukademy!
基本輸出
echo
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<p>
<?php
?>
</p>
</body>
</html>Now You Try Try
基本輸出
.
串接符號
<?php
echo "Hello," . " " . "Welcome to Asukademy!";
?>Hello, Welcome to Asukademy!
變數
$ 錢號
<?php
$cutie, $_beauty, $my_cutie, $my_12_wife, $doctorKerP;
?>錢號後第一個字元隻能為字母或底線( _ )
<?php
$12shadesOfGrey;
ShotShotShot;
$less is more;
$think-big;
?>變數
=
指定值
<?php
$name = "Benson"; // 字串
$age = 23; // 整數
$male = true; // Boolean
$weight = 79.9; // 浮點數
?>練習
<?php
$name = "Benson";
$age = 23;
$male = true;
$weight = 79.9;
// You Try Try
$info_a = "My name is" + $name;
$info_b = "My name is" . $name;
$info_c = "My age is" + $age;
$info_d = "My age is" . $age;
?>練習
<table border="1" cellpadding="5" cellspacing="0">
<thead>
<tr>
<td>Name</td>
<td>Age</td>
<td>Weight</td>
<td>Male</td>
</tr>
</thead>
<tbody>
<tr>
<td><?php echo $name ?></td>
<td><?php echo $age ?></td>
<td><?php echo $weight ?></td>
<td><?php echo $male ?></td>
</tr>
</tbody>
</table>數學運算
雙元運算子(binary operator)
<?php
$result = 5 + 7;
$result = 5 - 7;
$result = 5 * 7;
$result = 5 / 7;
$result = 5 % 7;
?>單元運算子(unary operator)
<?php
$result = $a++;
$result = $a--;
?>數學運算
myAge = 27, yourAge = 23
myAge + yourAge =
Now You Try Try
使用兩個變數 $myAge, $yourAge
在螢幕上印出
你的答案
比較
比較運算子(comparison operator)
== 等於
!= 不等於
=== 不隻要等於，型態還要一樣
> 大於
< 小於
>= 大於等於
<= 小於等於
比較
邏輯運算子(logical operator)
&& AND
|| OR
! NOT
流程控制
if
<?php
if (條件式) {
// do this!
}
?>else
<?php
if (條件式A) {
// Do this!
}
else if (條件式B) {
// A 如果不成立 B成立
// Do that
}
else {
// A 如果不成立, B也不成立
// Do what!
}
?>流程控制
switch
<?php
switch (某個變數) {
case 條件a:
// Do this
break;
case 條件b:
// Do that
break;
case 條件c:
// Do what
break;
default:
break;
}
?>作業
寫一個 HTML 表單
有三個表單欄位
1. 姓名, 電話, 出身年份 (1987~2015)
2. 跳頁之後判斷年齡
3. 滿十八歲顯示 "xxx 您好, 歡迎光臨"
4. 未滿十八則印出 "小屁孩快回家"
Thank you