Detailed explanation of code writing for CheckBox multi-select box upload failure in PHP

This article mainly introduces the code writing method for CheckBox multi-select box upload failure in PHP, as well as the problem of PHP processing checkbox check box form submission. Friends in need can refer to it

Use Java and other languages When uploading a form, you only need to upload the checkbox name when it is the same.

<input type="checkbox" name="checkbox" value="1"> 选项
<input type="checkbox" name="checkbox" value="2"> 选项
<input type="checkbox" name="checkbox" value="3"> 选项
<input type=&#39;button&#39; value=&#39;确定&#39; onclick="fun()"/>

But in PHP, only in this case, the name must be written as an array. Only when the form is submitted can the form be submitted normally

<input type="checkbox" name="checkbox[]" value="1"> 选项1
<input type="checkbox" name="checkbox[]" value="2"> 选项2
<input type="checkbox" name="checkbox[]" value="3"> 选项3
<input type="checkbox" name="checkbox[]" value="4"> 选项4
<input type="checkbox" name="checkbox[]" value="5"> 选项5
<input type="checkbox" name="checkbox[]" value="6"> 选项6
<input type=&#39;button&#39; value=&#39;确定&#39; onclick="fun()"/>

The following is a supplement to PHP's handling of Checkbox checkbox form submission issues

Add [] after the name of the check box on the PHP form submission page, so that the correct result can be obtained on the receiving page. After the form is submitted, you get an array, and then you get the specific vaule value of the form by accessing the array elements. The value of checkbox1 obtained has
newline by default.

Form code:

<form action="" method="post" name="asp"> 
　　复选框1:<input type="checkbox" name="checkbox1[]" value="1" /> 
　　复选框2:<input type="checkbox" name="checkbox1[]" value="2" /> 
　　复选框3:<input type="checkbox" name="checkbox1[]" value="3" /> 
　　<input type="submit" name= "Download" vaue="Download" /> 
　</form>

PHP processing form code:

<?php 
　　　if(isset($_POST["Download"])) 
　　　{ 
　　　　　foreach($_REQUEST[&#39;checkbox1&#39;] as $checkbox1) 
　　　　　{ 
　　　　　　　　　　echo $checkbox1; 
　　　　　} 
　　　} 
?>

The above is the entire content of this article, I hope it will be helpful to everyone's study.

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