php htmlspecialchars if statement form inputs trim spaces

Question

I want to avoid to validate the form if the user enters white spaces,
but actually entering spaces the form is still validate...

<?php
$name = ""; $email = ""; $comment = ""; $website = "";

if ($_SERVER["REQUEST_METHOD"] == "POST"){
    if(!empty($_POST["name"]) && !empty($_POST["email"]) && !empty($_POST["website"]) && !empty($_POST["comment"])){
        $name =    test_input($_POST["name"]);
        $email =   test_input($_POST["email"]);
        $website = test_input($_POST["website"]);
        $comment = test_input($_POST["comment"]);
        echo htmlspecialchars("".$name."".$email."".$website."".$comment."");

    }else{
        echo htmlspecialchars("fill all fields");
    }
}

function test_input($data){
   $data = trim($data);
   $data = stripslashes($data);
   $data = htmlspecialchars($data);
   return $data;
}
?>

What I am doing wrong?

if you could check it this way? `trim($_POST["name"] != "") && ...` — Aditya, Dec 05 '14 at 04:16

score 1 · Answer 1 · answered Dec 05 '14 at 04:27

i think you should check if the data is empty after trim You can try below code

if ($_SERVER["REQUEST_METHOD"] == "POST"){
        $name =    test_input($_POST["name"]);
        $email =   test_input($_POST["email"]);
        $website = test_input($_POST["website"]);
        $comment = test_input($_POST["comment"]);

    if(!empty($name) && !empty($email) && !empty($website) && !empty($comment)){

        echo htmlspecialchars("".$name."".$email."".$website."".$comment."");

    }else{
        echo htmlspecialchars("fill all fields");
    }
}

score 0 · Answer 2 · edited May 23 '17 at 11:59

0

for just spaces try

$str = '      ';
if (ctype_space($str)) {}

or

if(trim($str) == '') {} // check a blank string or it's a whitespace

arrange this according your requirement

for more Check if string is just white space?

edited May 23 '17 at 11:59

Community

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answered Dec 05 '14 at 04:23

Rakesh Sharma

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php htmlspecialchars if statement form inputs trim spaces

2 Answers2