How can I make sure it checks if there is a minimum of 30 characters in an input?

Question

I would like to check in PHP that if you enter something you need at least 30 characters.

If I run it now I can just keep going if I type nr: 31 for example.

if(empty($_POST['vraag'])) { 
    $vraagErr = 'Verplicht!'; 
} else { 
    $vraag = test_input($_POST['vraag']);

    if($_POST['vraag']<"30") { //This is the if instruction 
        $vraagErr = 'U moet meer dan 30 karakters invullen'; 
    }
}

Does this answer your question? [Limit String Length](https://stackoverflow.com/questions/3019285/limit-string-length) — Peca, Mar 24 '20 at 10:09

score 1 · Answer 1 · answered Mar 24 '20 at 09:47

1

Use strlen() to check this length:

if(strlen($_POST['vraag'])<30) { ...

Note: I'm suggesting you to use trim() as well.

answered Mar 24 '20 at 09:47

Aksen P

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@lucasCulhaci, you're welcome, you can accept the answer you've liked – Aksen P Mar 24 '20 at 11:50

score 0 · Answer 2 · answered Mar 24 '20 at 10:02

0

Use mb_strlen() to check it.

    if(mb_strlen($_POST['vraag']<"30")){

        // ....
    }

answered Mar 24 '20 at 10:02

LF00

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How can I make sure it checks if there is a minimum of 30 characters in an input?

2 Answers2