Php 簡介
＃php不同環境下的安裝
＃php標準語法
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<?php echo "Hello , world"; ?>
</body>
</html>
＃組態頁
<?php phpinfo(); ?>
＃表單
資料庫存取表單值主要透過
$_POST
$_GET
確認在處理網頁時
php.ini的REGISTER_GLOBALS 設定時必須是關閉的
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>Personalized Greeting Form</title>
</head>
<body>
<?php if(!empty($_POST['name'])){
echo "Greetings, {$_POST['name']}, and welcome.";} ?>
<form action="<?php echo $_SERVER['PHP_HELP'];?>" method="post">
Enter your name :<input type="text" name="name" />
<input type="submit"> />
</form>
</body>
</html>
＃資料庫
php支援所有主流資料庫
MySQL
PostgreSQL
Oracle
Sybase
SQLite
You could take the library.sql file
by http://example.oreilly.com/0636920012443
<?php
$db = new mysqli("localhost", "petermac", "password", "library");
//確保ＯＳ中有正確的憑證
if ($db->connnect_error){
die("Connect Error({$db->connect_errno}) {$db->connect_error}");
}
?>
<html>
<head>
</head>
<body>
<table cellSpacing="2" cellPadding="6" align="center" border="1">
<tr>
<td colspan="4">
<h3 align="center">These Books are currently available</h3>
</td>
</tr>
<tr>
<td align="center">Title</td>
<td align="center">Year Published</td>
<td align="center">ISBN</td>
</tr>
/*
mysql_fetch_assoc() 函数從结果集中取得一行作为關聯数组。
傳回根據從結果集合取得的行生成的關聯術組，如果沒有更多行，則返回false。如果沒有返回根據定義assoc() 函数就返回false
*/
<?php while ($row = $result->fetch_assoc()){ ?>
<tr>
<td><?php echo stripslashes($row['title']); ?></td>
<td> align="center"><?php echo $row['pub_year']; ?><td>
<td><?php echo $row['ISBN']; ?></td>
</tr>
<?php } ?>
</table>
</body>
</html>
＃圖像
利用GD延伸函式庫
<?php
if (isset($_GET['meeage'])) {
$font = "items" ;
$size = 12;
$image= imagecreatefrompng("button,png");
$tsize = imagettfbox($size, 0, $font, $_GET['message'] );
$dx = abs( $tsize[2] - $tsize[0]);
$dy = abs( $tsize[5] - $tsize[3]);
$x = (imagex($image) - $dx) /2;
$y = (imagey/($image) - $dy)/2 + $dy;
//繪製文字
$black = imagecolorallocate($im,0,0,0);
imagettftext($image, $size, 0, $x, $y, $block, $font, $_GET['message']);
//回傳文字
header("Content-type: image/png");
imagepng($image);
exit;
} ?>
<html>
<head>
<title>Button Form</title>
</head>
<body>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="GET">
Enter message to appear on button:
<input type="text" name="message" /><br />
<input type="submit" value="Create Button" />
</form>
</body>
</html>
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