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I am processing an html form using php. My question is specifically about input type checkbox:

<input type="checkbox" name="checkme" value="checked" <***php echo $data['checkme']; ***> >

This works for me because, on load, $data['checkme'] = ""; and on error, $data['checkme'] = "checked". I have searched quite a bit regarding this, and there are plenty of suggestions for setting the value of the checkbox input. But not in this way (that I found). This works, but I want to make sure I am not creating a problem that I don't foresee.

My question: Is this good practice?

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  • Is checked HTML5? I thought previous format was checked="checked". Anyway, back to the real question, I usually have it as if(!empty().. { echo 'checked="checked"';} Commented Feb 18, 2022 at 19:50
  • The way you found seems like first answer here, stackoverflow.com/questions/16239663/…. With the exception that if $data or checkme don't exist you'll throw a notice. Commented Feb 18, 2022 at 19:52
  • The form initializes with $data['name'], $data['address'],...etc. The array values are empty upon initialization, and populated with user input if the user needs to make correction. If $data doesn't exist, every field of the form will throw a notice. I appreciate the link to question # 16239663. I had not found that in my previous search. Thanks Commented Feb 20, 2022 at 23:46
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