php 在提交时获取复选框值

Question

提问by Nofel

I have 6 options, I want to get the checked values to store them in variable on second page. How do I go on doing that?

我有 6 个选项，我想获取选中的值以将它们存储在第二页的变量中。我如何继续这样做？

<form action="third.php" method="get">
    <!-- Choices -->
    Red     <input type="checkbox" name="color[]" id="color" value="Red">
    Green   <input type="checkbox" name="color[]" id="color" value="Green">
    Blue    <input type="checkbox" name="color[]" id="color" value="Blue">
    Cyan    <input type="checkbox" name="color[]" id="color" value="Cyan">
    Magenta <input type="checkbox" name="color[]" id="color" value="Magenta">
    Yellow  <input type="checkbox" name="color[]" id="color" value="Yellow">
    Black   <input type="checkbox" name="color[]" id="color" value="Black">
    <!-- Submit -->
    <input type="submit" value="submit">
</form>

And third.phppage :

和third.php页面：

$color = $_GET['color'];

echo 'The color is '.$color;

If I remove [], I get the color is on, when I do it like color[]I get a notice saying :

如果我删除[]，我会看到颜色，当我这样做时，color[]我会收到一条通知说：

Array to string conversion

数组到字符串的转换

What I want is the value of checked, checkboxes so I can store it in variable.

我想要的是选中的复选框的值，以便我可以将其存储在变量中。

Answer 1

回答by Funk Forty Niner

A good method which is a favorite of mine and for many I'm sure, is to make use of foreachwhich will output each color you chose, and appear on screen one underneath each other.

一个很好的方法是我最喜欢的，我敢肯定，对许多人来说，使用foreach它会输出您选择的每种颜色，并在屏幕上显示一个彼此下方。

When it comes to using checkboxes, you kind of do not have a choice but to use foreach, and that's why you only get one value returned from your array.

当谈到使用复选框时，您别无选择，只能使用foreach，这就是为什么您只能从数组中返回一个值。

Here is an example using $_GET. You can however use $_POSTand would need to make both directives match in both files in order to work properly.

这是一个使用$_GET. 但是$_POST，您可以使用并且需要使两个文件中的两个指令都匹配才能正常工作。

HTML FORM

HTML 表单

<form action="third.php" method="get">
    Red<input type="checkbox" name="color[]" id="color" value="red">
    Green<input type="checkbox" name="color[]" id="color" value="green">
    Blue<input type="checkbox" name="color[]" id="color" value="blue">
    Cyan<input type="checkbox" name="color[]" id="color" value="cyan">
    Magenta<input type="checkbox" name="color[]" id="color" value="Magenta">
    Yellow<input type="checkbox" name="color[]" id="color" value="yellow">
    Black<input type="checkbox" name="color[]" id="color" value="black">
    <input type="submit" value="submit">
</form>

PHP (using $_GET) using `third.php`as your handler

PHP（使用 $_GET）`third.php`用作您的处理程序

<?php

$name = $_GET['color'];

// optional
// echo "You chose the following color(s): <br>";

foreach ($name as $color){ 
    echo $color."<br />";
}

?>

Assuming having chosen red, green, blue and cyan as colors, will appear like this:

假设选择了红色、绿色、蓝色和青色作为颜色，将显示如下：

red
green
blue
cyan

红色
绿色
蓝色
青色

OPTION #2

选项#2

You can also check if a color was chosen. If none are chosen, then a seperate message will appear.

您还可以检查是否选择了颜色。如果没有选择，则会出现一条单独的消息。

<?php

$name = $_GET['color'];

if (isset($_GET['color'])) {
    echo "You chose the following color(s): <br>";

    foreach ($name as $color){
        echo $color."<br />";
    }
} else {
    echo "You did not choose a color.";
}

?>

Additional options:

其他选项：

To appear as a list: (<ul></ul>can be replaced by <ol></ol>)

显示为列表：（<ul></ul>可以替换为<ol></ol>）

<?php

$name = $_GET['color'];

if (isset($_GET['color'])) {
    echo "You chose the following color(s): <br>";
    echo "<ul>";
    foreach ($name as $color){
        echo "<li>" .$color."</li>";
    }
    echo "</ul>";
} else {
    echo "You did not choose a color.";
}

?>

Answer 2

回答by Rahul

(It's not action="get"or action="post"it's method="get"or method="post"

（它不是action="get"或action="post"它是method="get"或method="post"

Try to do it using post method:

尝试使用 post 方法来做到这一点：

<form action="third.php" method="POST">
    Red<input type="checkbox" name="color[]" id="color" value="red">
    Green<input type="checkbox" name="color[]" id="color" value="green">
    Blue<input type="checkbox" name="color[]" id="color" value="blue">
    Cyan<input type="checkbox" name="color[]" id="color" value="cyan">
    Magenta<input type="checkbox" name="color[]" id="color" value="Magenta">
    Yellow<input type="checkbox" name="color[]" id="color" value="yellow">
    Black<input type="checkbox" name="color[]" id="color" value="black">
    <input type="submit" value="submit">
</form>

and in third.php

并在第三个.php

or for a pericular field you colud get value in:

或者对于特定领域，您可以在以下方面获得价值：

$_POST['color'][0] //for RED
$_POST['color'][1] // for GREEN

Answer 3

回答by Sathya Baman

What i suggest is , its better to use post than get. here are some difference between post VS get

我的建议是，使用 post 比 get 更好。这是 post VS get 之间的一些区别

Some notes on GET requests:

关于 GET 请求的一些注意事项：

GET requests can be cached
GET requests remain in the browser history
GET requests can be bookmarked
GET requests should never be used when dealing with sensitive data
GET requests have length restrictions
GET requests should be used only to retrieve data

GET 请求可以被缓存
GET 请求保留在浏览器历史记录中
可以为 GET 请求添加书签
处理敏感数据时不应使用 GET 请求
GET 请求有长度限制
GET 请求应仅用于检索数据

Some notes on POST requests:

关于 POST 请求的一些注意事项：

POST requests are never cached
POST requests do not remain in the browser history
POST requests cannot be bookmarked
POST requests have no restrictions on data length

POST 请求永远不会被缓存
POST 请求不会保留在浏览器历史记录中
无法为 POST 请求添加书签
POST 请求对数据长度没有限制

HTML Code

HTML代码

            <html>
    <head></head>
    <body>
    <form action="output.php" method="post">
    Red<input type="checkbox" name="color[]" id="color" value="red">
    Green<input type="checkbox" name="color[]" id="color" value="green">
    Blue<input type="checkbox" name="color[]" id="color" value="blue">
    Cyan<input type="checkbox" name="color[]" id="color" value="cyan">
    Magenta<input type="checkbox" name="color[]" id="color" value="Magenta">
    Yellow<input type="checkbox" name="color[]" id="color" value="yellow">
    Black<input type="checkbox" name="color[]" id="color" value="black">
    <input type="submit" value="submit">
    </form>
    <body>
    </html>

PHP code

PHP代码

    <?php


    if(isset($_POST['color'])) {
    $name = $_POST['color'];

    echo "You chose the following color(s): <br>";
    foreach ($name as $color){
    echo $color."<br />";
    }} // end brace for if(isset

    else {

    echo "You did not choose a color.";

    }

    ?>

Answer 4

回答by manikandanpachaiyappan

foreach is the best way to get array of values.

foreach 是获取值数组的最佳方式。

here the example code: html code:

这里的示例代码： html 代码：

<form action="send.php" method="post">
    Red<input type="checkbox" name="color[]" id="color" value="red">
    Green<input type="checkbox" name="color[]" id="color" value="green">
    Blue<input type="checkbox" name="color[]" id="color" value="blue">
    Cyan<input type="checkbox" name="color[]" id="color" value="cyan">
    Magenta<input type="checkbox" name="color[]" id="color" value="Magenta">
    Yellow<input type="checkbox" name="color[]" id="color" value="yellow">
    Black<input type="checkbox" name="color[]" id="color" value="black">
    <input type="submit" value="submit">
</form>

phpcode:

代码：

<?php

$name = $POST['color'];



foreach ($name as $color){ 
    echo $color."<br />";
}

?>

Answer 5

回答by manikandanpachaiyappan

It's very simple.

这很简单。

The checkbox field is like an input text. If you don't write anything in the field, it will say the field doesn't exist.

复选框字段就像输入文本。如果您不在该字段中写任何内容，它会说该字段不存在。

<form method="post">
    <input type="checkbox" name="check">This is how it works!<br>
    <button type="submit" name="submit">Submit</button>
</form>
<?php
if(isset($_POST['submit'])) {
    if(!isset($_POST['check'])) {
        echo "Not selected!";
    }else{
        echo "Selected!";
    }
}
?>

Answer 6

回答by Vaibhavraj Roham

Just for printing you can use as below :

仅用于打印，您可以使用如下：

print_r($_GET['color']);

or

或者

var_dump($_GET['color']);

Answer 7

回答by Blacboy

I think the value for the $_POST['color']should be read only after checking if its set.

我认为$_POST['color']只有在检查它是否设置后才应该读取它的值。

<?php


    if(isset($_POST['color'])) {
      $name = $_POST['color'];  

    echo "You chose the following color(s): <br>";
    foreach ($name as $color){
   echo $color."<br />";
  }} // end brace for if(isset

else {

echo "You did not choose a color.";

}

?>

Answer 8

回答by Cor Cool

Perhaps a better way is using the php function in_array()like this:

也许更好的方法是使用 php 函数in_array()像这样：

$style='V';//can be 'V'ertical or 'H'orizontal
$lineBreak=($style=='V')?'<br>':'';
$name='colors';//the name of your options
$Legent="Select your $name";//dress it up in a nice fieldset with a ledgent
$options=array('red','green','blue','orange','yellow','white','black');
$boxes='';//innitiate the list of tickboxes to be generated
if(isset($_REQUEST["$name"])){ 
//we shall use $_REQUEST but $_POST would be better
   $Checked=$_REQUEST["$name"];
}else{
   $Checked=array();
}
foreach($options as $option){
$checkmark=(in_array($option,$Checked))?'checked':'';
$nameAsArray=$name.'[]';//we would like the returned data to be in an array so we end with []
$boxes.=($style=='V')?"<span class='label2' align='right'><b>$option : </b></span>":"<b>$option </b>";
$boxes.="<input style='width:2em;' type='checkbox' name='$nameAsArray' id='$option' value='$option' $checkmark >$lineBreak";
}

echo<<<EOF
<html>
<head></head>
<body>
<form name="Update" method="GET" action="{$_SERVER['PHP_SELF']}">\n
<fieldset id="tickboxes" style="width:25em;">
<legend>{$Legent}</legend>
{$boxes}
</fieldset>
<button type="submit" >Submit Form</button>
</form>
<body>
</html>
EOF
;

To start with we have created a variable $styleto set if we want the options in a horizontal or vertical way. This will infrequence how we display our checkboxes. Next we set the $namefor our options, this is needed as a name of the array where we want to keep our options. I have created a loop here to construct each option as given in the array $options, then we check each item if it should be checked in our returned form. I believe this should simplify the way we can reproduce a form with checkboxes.

首先，我们创建了一个变量$style来设置我们是否想要水平或垂直方式的选项。这将不常显示我们的复选框。接下来我们$name为我们的选项设置，这需要作为我们想要保留我们的选项的数组的名称。我在这里创建了一个循环来构造数组中给定的每个选项$options，然后我们检查每个项目是否应该在返回的表单中进行检查。我相信这应该可以简化我们使用复选框重现表单的方式。

Answer 9

回答by Cor Cool

If you want to turn specific values in to new variables if they have been selected:

如果要将特定值转换为已选择的新变量：

// Retrieve array color[] and set as variable    
$colors = $_GET['color'];
// Use array_search to find the key for "red"
$key_red = array_search('red', $colors);
// If "red" exists, the key will be an integer (or FALSE)
if (is_int($key_red)) {
    $red_color = 'Red was selected';
}

Answer 10

回答by jigar

//retrive check box and gender value
$gender=$row['gender'];
$chkhobby=$row['chkhobby'];
<tr>
    <th>GENDER</th>
    <td>
            Male<input type="radio" name="gender" value="1" <?php echo ($gender== '1') ?  "checked" : "" ;  ?>/>
            Female<input type="radio" name="gender" value="0" <?php echo ($gender== '0') ?  "checked" : "" ;  ?>/>

    </td>
</tr>
<tr>
    <th>Hobbies</th>
    <td>
        <pre><?php //print_r($row);

            $hby = @explode(",",$row['chkhobby']);
            //print_r($hby);
        ?></pre>
        read<input id="check_1" type="checkbox" name="chkhobby[]" value="read" <?php if(in_array("read",$hby)){?> checked="checked"<?php }?>>
        write<input id="check_2" type="checkbox" name="chkhobby[]" value="write" <?php if(in_array("write",$hby)){?> checked="checked"<?php }?>>
        play<input id="check_4" type="checkbox" name="chkhobby[]" value="play" <?php if(in_array("play",$hby)){?> checked="checked"<?php }?>>


    </td>
    </tr>
//update
$gender=$_POST['gender'];
$chkhobby = implode(',', $_POST['chkhobby']);

php 在提交时获取复选框值

提问by Nofel

回答by Funk Forty Niner

HTML FORM

HTML 表单

PHP (using $_GET) using `third.php`as your handler

PHP（使用 $_GET）`third.php`用作您的处理程序

OPTION #2

选项#2

Additional options:

其他选项：

回答by Rahul

回答by Sathya Baman

回答by manikandanpachaiyappan

回答by manikandanpachaiyappan

回答by Vaibhavraj Roham

回答by Blacboy

回答by Cor Cool

回答by Cor Cool

回答by jigar

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php 在提交时获取复选框值

提问by Nofel

回答by Funk Forty Niner

HTML FORM

HTML 表单

PHP (using $_GET) using third.phpas your handler

PHP（使用 $_GET）third.php用作您的处理程序

OPTION #2

选项#2

Additional options:

其他选项：

回答by Rahul

回答by Sathya Baman

回答by manikandanpachaiyappan

回答by manikandanpachaiyappan

回答by Vaibhavraj Roham

回答by Blacboy

回答by Cor Cool

回答by Cor Cool

回答by jigar

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PHP (using $_GET) using `third.php`as your handler

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