How to obtain the checkbox value in PHP

How to correctly implement PHP to obtain the checkbox value is still unfamiliar to beginners. Here we will introduce the implementation methods in detail and hope to help you.

1. < InputType = "checkbox" name = "weeks []"
   Id = "weeks" value = 1>
2. < InputType = "checkbox" name = "weeks []"
   Id = "weeks" value = 2>
3. < InputType = "checkbox" name = "weeks []"
   Id = "weeks" value = 3>

The brackets after weeks cannot be left blank. Otherwise, you can only get the last value when using PHP. PHP will handle the problem as follows:

Method 1 for PHP to obtain the checkbox value:

 
 

  
  
$weeks = $_POST['weeks'];   
  
  
for($i=0;$i< count
($weeks);$i++)   
  
  
echo $weeks[1]."< br>";  
 
 

Method 2 for PHP to obtain the checkbox value:

 
 

  
  
$array = $this->request->
getParameter("weeks[]");   
  
  
$str =implode(',',$array);   
  
  
echo $str; 
 
 

Forms are frequently used, and check boxes are frequently used. But in PHP, unlike other scripting languages, the name of the check box must be followed by [], and then obtained through an array loop.

 
 

  
  
<? PHP
  
  
If (! Empty ($ _ POST ["t1"]) {
  
  
$ Array = $ _ POST ["t1"];
  
  
$ Size = count ($ array );
  
  
For ($ I = 0; $ I <$ size; $ I ++ ){
  
  
Echo $ array [$ I]. "<br> ";
  
  
}
  
  
}
  
  
?>
  
  
<Form method = post action = "" name = "form1">
  
  
<Input type = "checkbox"
Name = "t1 []" value = "basketball"> basketball <br>
  
  
<Input type = "checkbox"
Name = "t1 []" value = ""> football <br>
  
  
<Input type = "checkbox"
Name = "t1 []" value = "Table Tennis"> Table Tennis <br>
  
  
<Input type = "checkbox"
Name = "t1 []" value = "Volleyball"> volleyball <br>
  
  
<Input type = "submit">
  
  
</Form>
 
 

The above two methods are described for PHP to get the checkbox value.