How to make a link on my site open only when clicked on the same page?

Question

I’m trying to make a plugin html file editor, css, js and php, my problem comes that after it reads all the files it creates a link to edit my created file and goes to another page only I want that when the link is clicked it instead of redirecting the editor it opens on the same page.

Answer 1

You can divide parts of the code by if/Else, for example:

if(isset($_POST['formulario']))
{
   // código após formulário ou link ser submetido
}
else               
{
    // código do formulário ou link
}

This way you control the flow of code and consequently what appears on the same page.

Answer 2

Well you can use Frameset in html much easier. Or you can create a schema in php type:

$ac = 1;

When you click the edit button, your page will add $ac + 1 and you will continue on the same page only in the form of editing.

if($ac == 1){
  //ler ou inserir dados;
} else if ($ac == 2){
  //editar dados;
}