How would you do this basic wordpress plugin? - php

Question

I'm starting to develop it and I realise it's kind of tricky.
I need to convert the shortcode
[helloworld] into <h1>"Hello World"</h1>
and be able to change
"Hello World" from admin
Can someone point me on the right way?

Answer 1

You need create hellowrold as a shortcode.
function hellowrold_func( $atts ) {
$a = shortcode_atts( array(
'content' => 'Default content',
), $atts );
return "<h1>{$a['content']}</h1>";
}
add_shortcode( 'hellowrold', 'hellowrold_func' );
Then you can use it like this and change text as you like from the content attribute.
[hellowrold content="Hello World"]
See Shortcode API for more details.
If you need to add this to a plugin, simply create a file with a header content like this:
/**
* Plugin Name: YOUR PLUGIN NAME
*/
Add the code above below this header and put the file inside a folder in your plugins directory.
See Plugins Basics for more details.

Answer 2

For such kind of purpose, you need to use shortcode_atts (https://developer.wordpress.org/reference/functions/shortcode_atts/).
Simply define the below function
function torque_hello_world_shortcode( $atts ) {
$a = shortcode_atts( array(
'title' => 'Heading'
), $atts );
return '<h1>"' . $a["title"] . '"</h1> from admin';
}
To use the above function, simply add the below shortcode .....
1. [helloworld title="Hello World"]
returns
"Hello World" from admin
2. [helloworld title="Hi"]
returns
"Hi" from admin