Dont forget changes unit tests for this PR

Sorry, this is not a bug fix, so please send it to 4.3 not develop.
See https://github.com/codeigniter4/CodeIgniter4/blob/caa355d78bc2eb0029842ee3765d6dda23f95f71/contributing/workflow.md#if-you-sent-to-the-wrong-branch

Please remove the space at the end.
The output will be:
<input type="text" > to <input type="text">

You forgot GPG signing.
See https://github.com/codeigniter4/CodeIgniter4/blob/develop/contributing/pull_request.md#signing

@kenjis

Im not sure that removing the closing tag is the best way to go here. The closing tag is needed for the more stricter XHTML. XHTML requires all elements to be closed including void elements. The closing tag on a plain HTML document is still valid even if some validation says its not. It is simply ignored. By omitting these you are causing problems for those who want to use XHTML markup. The presence of them has no affect on plain HTML markup.

If you really have to get rid of them then I would have a config definition to decide how to render the tags.

I think it is better to follow the standard.
https://html.spec.whatwg.org/

XHTML 1.1 specification is Superseded Recommendation.

@sclubricants

If you really have to get rid of them then I would have a config definition to decide how to render the tags.

Do you need to support XHTML in year 2022?

I don't use it with codeigniter but I do in Salesforce. Just saying some people might be using it and if you change it it could cause problems.

I at least think this is a breaking change.

No activity by author, i can send PR at home later

One of criteria SEO is data structure schema must be valid,

Google said on https://developers.google.com/search/docs/appearance/structured-data

We removed Google-specific validation from the Structured Data Testing Tool and migrated the tool to a new domain, Schema Markup Validator (https://validator.schema.org/).

And now based on HTML5, we must support standard structure.

@kenjis I have problem in my env with PHPStan 1.8.10

------ ---------------------------------------------------------------------------------------------------------------------------- 
  Line   system\Helpers\form_helper.php
 ------ ----------------------------------------------------------------------------------------------------------------------------      
         Ignored error pattern #^Offset 'checked' on array\{type\: 'checkbox', name\: mixed, value\: string\} in isset\(\) does not       
         exist\.$# in path D:\Project\laragon\www\ci4form\system\Helpers\form_helper.php was not matched in reported errors.
  366    Offset 'checked' on array{type: 'checkbox', name: string, value: string} in isset() does not exist.
 ------ ----------------------------------------------------------------------------------------------------------------------------      


 [ERROR] Found 2 errors

Fix the phpstan error(s) before commit.

    function form_checkbox($data = '', string $value = '', bool $checked = false, $extra = ''): string
    {
        $defaults = [
            'type'  => 'checkbox',
            'name'  => (! is_array($data) ? $data : ''),
            'value' => $value,
        ];

        if (is_array($data) && array_key_exists('checked', $data)) {
            $checked = $data['checked'];
            if ($checked === false) {
                unset($data['checked']);
            } else {
                $data['checked'] = 'checked';
            }
        }

        if ($checked === true) {
            $defaults['checked'] = 'checked';
        } elseif (isset($defaults['checked'])) {
            unset($defaults['checked']);
        }

        return '<input ' . parse_form_attributes($data, $defaults) . stringify_attributes($extra) . ">\n";
    }

@ddevsr I cannot reproduce.
Can you send a PR?

@ddevsr I cannot reproduce. Can you send a PR?

Okay, i will send PR with PHPStan 1.8.8

See #6717