1👍
✅
You should add a name="…"
attribute [mdn] to the <input>
elements, so:
<input type="text" name="firstname" class="form-control form-control-lg" id="firstname" placeholder="firstname"> … <input type="text" name="secondname" class="form-control form-control-lg" id="secondname" placeholder="secondname"> … <input type="email" name="email" class="form-control form-control-lg" id="email" placeholder="example@example.com"> … <input type="number" name="phonenumber" class="form-control form-control-lg" id="phonenumber" placeholder="0712345678">
Source:stackexchange.com