How to use PHP form arrays _ PHP Tutorial

Describes how to use PHP form arrays. Today we will introduce you to a problem about encoding. The Options form of the WP plug-in can define some form value variables. WP can help us to process, save, and repair them. what we will introduce today is related.Encoding. The Options form of the WP plug-in can define some form value variables. WP can help us directly process, save, and modify the content submitted by the form without any $ _ POST. But what if the content of the form I want to submit is a dynamically changing array? For example, a form is a dynamically generated inputbox list. how can I directly package the data into an array variable and pass it to WP without $ _ POST?

Suddenly thought of PHP form array:

 
 

  
  
<Input name = "a []" value = "1"/>
  
  
<Input name = "a []" value = "2"/>
  
  
<Input name = "a []" value = "3"/>
  
  
$ _ POST:
  
  
Array
  
  
(
  
  
[A] => Array
  
  
(
  
  
[0] => 1
  
  
[1] => 2
  
  
[2] => 3
  
  
)
  
  
)
 
 

If the naming form is as follows:

 
 

  
  
<Input name = "a [2]" value = "1"/>
  
  
<Input name = "a [5]" value = "2"/>
  
  
<Input name = "a [9]" value = "3"/>
  
  
$ _ POST:
  
  
Array
  
  
(
  
  
[A] => Array
  
  
(
  
  
[2] => 1
  
  
[5] => 2
  
  
[9] => 3
  
  
)
  
  
)
 
 

En, continue to test the PHP form array:

 
 

  
  
<Input name = "a [aa]" value = "1"/>
  
  
<Input name = "a [bb]" value = "2"/>
  
  
<Input name = "a [cc]" value = "3"/>
  
  
 
  
  
$ _ POST:
  
  
Array
  
  
(
  
  
[A] => Array
  
  
(
  
  
[Aa] => 1
  
  
[Bb] => 2
  
  
[Cc] => 3
  
  
)
  
  
)
 
 

Then test the multi-dimensional array. Wow, that's cool!

A dynamically generated PHP form array can submit a lot of data only in the form of an array variable without relying on Javascript, solving the big trouble of developing this small WordPress plug-in.

Encoding encountered a problem. The Options form of the WP plug-in can define some form value variables. WP can help us process, save, and repair them directly...