Examples of php combining forms to implement some simple functions_PHP tutorial

例子一（POST提交表单）：

复制代码 代码如下:

Enter a word:


How long should be the chunks be?

复制代码 代码如下:

$word=$_POST['word'];
$number=$_POST['number'];
$chunks=ceil(strlen($word)/$number);
echo "The $number-letter chunks of '$word' are:
n";
for ($i = 0;$i<$chunks;$i++){
$chunk=substr($word,$i*$number,$number);
printf("%d: %s
n",$i+1,$chunk);
}
?>

html显示出来的页面。

提交表单后php处理出来的页面。在这个例子中，我输入一个单词，然后给定一个长度，将单词等分成该长度的块。

演示了通过POST方法提交表单。
例子二(单选，GET接受表单)：

复制代码 代码如下:

Select your personality attributes:


perky
morose
thinking
feeling
speed-thrift
shopper

if (array_key_exists('s',$_GET)){
$des = implode(' ', $_GET['att']);
echo "You have a $des personality.";
}
?>

例子三（多选，GET接受表单）：

注意到此时 下划线告诉GET你传输的是个数组，黑体字部分则是表示改选择框为多选框

复制代码 代码如下:

Select your personality attributes:

perky
morose
thinking
feeling
speed-thrift
shopper






if (array_key_exists('s',$_GET)){
$des = implode(' ', $_GET['att']);
echo "You have a $des personality.";
}
?>

Example 4 (checkbox): Similarly name="att[]" tells GET that what you transmit is an array, checked means that the option is the initial default Selection, the same as the above example, adding selected="selected" in the tag can also

make the initial default selection for multiple selections.

Copy code The code is as follows:

Select your personality attributes:

perky

morose

thinking

feeling < ;br/>

if (array_key_exists('s',$_GET)){
echo "

"; 
print_r($_GET); 
echo "if (is_null($_GET['att'])) exit; 

$des = implode(' ', $_GET['att']); 
echo "You have a $des personality."; 
} 
?> 

Example 5 (radio button): Note that the same option can be used The selected names must be equal

Copy code The code is as follows:

Male:
< input type="radio" checked="checked" name="Sex" value="male" />


Female:

---

Male:



Female:

When the user clicks a radio button, the button becomes selected and all other buttons become unselected.

Example 6 (stick form): How can a form realize that the previously entered values ​​still exist after the page is refreshed? As follows

Copy the code The code is as follows:

$f = $_POST['fa'] ;

?>

temperature :
;


< input type="submit" name="Convert to Celsius" />

if (!is_null($f)){
$c = ($f-32)*5/9;
printf("%.2lf is %.2lfC",$f,$c);
}
?>

It’s all simple form processing~

Knowledge make me stronger!

http://www.bkjia.com/PHPjc/323405.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/323405.htmlTechArticleExample 1 (POST submission form): Copy the code as follows: html head title Chunkify Form /title /head body form action="chunkify.php" method="POST" Enter a word: input type="text...