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PHP Form Required





    • In PHP form some data fields are required to be filled. Here we add a little script after each required field, which generates the correct error message if needed (that is if the user tries to submit the form without filling out the required fields):

<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">

Name: <input type="text" name="name">

<span class="error">* <?php echo $nameErr;?></span>

<br><br>

E-mail:

<input type="text" name="email">

<span class="error">* <?php echo $emailErr;?></span>

<br><br>

Website:

<input type="text" name="website">

<span class="error"><?php echo $websiteErr;?></span>

<br><br>

<label>Comment: <textarea name="comment" rows="5" cols="40"></textarea>

<br><br>

Gender:

<input type="radio" name="gender" value="female">Female

<input type="radio" name="gender" value="male">Male

<span class="error">* <?php echo $genderErr;?></span>

<br><br>

<input type="submit" name="submit" value="Submit">

</form>

  • The next step is to validate the input data, that is “Does the Name field contain only letters and whitespace?”, and “Does the E-mail field contain a valid e-mail address syntax?”, and if filled out, “Does the Website field contain a valid URL?”.


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