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How to create a plugin in WordPress by code:-



The plugin is the special component that provides functionality in the WordPress application.

for example, if we want to create a feedback form then we can feedback plugin.

the plugin can be reused in another WordPress project. because the plugin is the independent plugin.


How we create a normal plugin:-

1) create file in wp-content/plugins folder

2) write meta tag

3)  create the function and write functionality

4)  call function under the action, hooks, and filter


action:-  if we want to add any method under WordPress application then we can use action.


add_action('filter',methodname)

add_action('hooks',methodname)


hooks:-  it is the event that will be called implicit for example if we want to call any functionality under page initialize.

add_action('init',method)

filter:-  it is used to implement functionality under a particular part of the dashboard.

add_action('admin_head',methodname)


Simple Plugin Program Code:-


<?php

/*

plugin name:- scs-notice

description:-  it is for scs events description

version: 1.0

Author:  shiva

Author Uri:  www.shivaconceptsotuion.com

*/

function displaynotice()
{
echo "<marquee><h1 style='color:red;'>TODAY is SIX Annversary of Shiva Concept Solution</h1></marquee>";
}
if(!is_admin())
add_action('init',displaynotice);
?>


Create Form Plugin:-


To create a form plugin same step should be followed.


we will use add_shortcode('shortcodename',functionname)




complete code for form plugin:-


<?php
/*

plugin name:- scs-addition

description:-  it is for the addition of two number

version: 1.0

Author:  shiva

Author Uri:  www.shivaconceptsotuion.com

*/

function add()
{
?>
<form action="" method="post">

     <input type="text" name="txtp" placeholder="Enter First Number" />
     <br>
     <br>
     <input type="text" name="txtr" placeholder="Enter Second Number" />
      <br>
      <br>
      <input type="submit" name="btnsubmit" value="ADD" />

</form>

<?php
     if(isset($_REQUEST['btnsubmit']))
     {
      $a = $_REQUEST['txtp'];
      $b = $_REQUEST['txtr'];
      $c=$a+$b;
      echo "Result is ".$c;
     }


?>

<?php
}

add_shortcode('scsadd',add);
?>




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