Examples of php combining forms to implement some simple functions

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Examples of php combining forms to implement some simple functions_PHP tutorial

Jul 21, 2016 pm 03:29 PM

html php post one code example Function copy accomplish submit of Simple combine form

例子一（POST提交表单）：

复制代码代码如下:

 
<html> 
<head> 
<title> 
Chunkify Form 
</title> 
</head> 
<body> 
<form action="chunkify.php" method="POST"> 
Enter a word: 
<input type="text" name="word"/><br/> 
How long should be the chunks be? 
<input type="text" name="number"/><br /> 
<input type="submit" value="Chunkify"> 
</form> 
</body> 
</html> 

复制代码代码如下:

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

Examples of php combining forms to implement some simple functions_PHP tutorial

html显示出来的页面。

Examples of php combining forms to implement some simple functions_PHP tutorial

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:

 
<form action="<?php echo $_SERVER['PHP_SELF'] ?>" method="GET"> 
Select your personality attributes:<br/> 
<select name="att[]" > 
<option value="perky">perky</option> 
<option value="morese">morose</option> 
<option value="thinking">thinking</option> 
<option value="feeling"> feeling</option> 
<option value="thrifty">speed-thrift</option> 
<option value="prodigal">shopper</option> 
</select> 
<br> 
<input type ="submit" name="s" value="Record my personality"> 
</form> 

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

Examples of php combining forms to implement some simple functions_PHP tutorial

例子三（多选，GET接受表单）：

注意到此时<select name="att[]" multiple> 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:

 
<form action="<?php echo $_SERVER['PHP_SELF'] ?>" method="GET"> 
Select your personality attributes:<br/> 
<select name="att[]" multiple> 
<option value="perky">perky</option> 
<option value="morese">morose</option> 
<option value="thinking">thinking</option> 
<option value="feeling"> feeling</option> 
<option value="thrifty">speed-thrift</option> 
<option value="prodigal">shopper</option> 
</select> 
<br> 
<input type ="submit" name="s" value="Record my personality"> 
</form> 

<?php 
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:

 
<form action="<?php echo $_SERVER['PHP_SELF'] ?>" method="GET"> 
Select your personality attributes:<br/> 
perky<input type="checkbox" name="att[]" value="perky" checked / > <br/> 
morose<input type="checkbox" name="att[]" value="morose" checked /> <br/> 
thinking<input type=" checkbox" name="att[]" value="thinking" /> <br/> 
feeling<input type="checkbox" name="att[]" value="feeling" /> &lt ;br/> 
<br> 
<input type ="submit" name="s" value="Record my personality"> 
</form> 

<?php 
if (array_key_exists('s',$_GET)){ 
echo "<pre>"; 
print_r($_GET); 
echo "</pre> ;"; 
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:

 
<form> 
Male: 
< input type="radio" checked="checked" name="Sex" value="male" /> 
<br /> 
Female: 
<input type="radio" name ="Sex" value="female" /> 
<br> 
<hr> 
Male: 
<input type="radio" checked="checked" name=" Se" value="male" /> 
<br /> 
Female: 
<input type="radio" name="Se" value="female" /> 
</form> 
<p>When the user clicks a radio button, the button becomes selected and all other buttons become unselected. </p> 

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:

 
<?php 
$f = $_POST['fa'] ; 

?> 

<form action = "<?php echo $_SERVER['PHP_SELF']; ?> " method="POST"> 
temperature : 
<input type="text" name="fa" value="<?php echo $f;?>" />; 
<br/> 
< input type="submit" name="Convert to Celsius" /> 
</form> 
<?php 
if (!is_null($f)){ 
$c = ($f-32)*5/9; 
printf("%.2lf is %.2lfC",$f,$c); 
} 
?> 

Examples of php combining forms to implement some simple functions_PHP tutorial

It’s all simple form processing~

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