Answers for "image upload button on input box"

image upload form

<form action="upload.php" method="post" enctype="multipart/form-data">
    <label>Select Image File:</label>
    <input type="file" name="image">
    <input type="submit" name="submit" value="Upload">
</form>

input file on image click

.image-upload>input {
  display: none;
}

<div class="image-upload">
  <label for="file-input">
    <img src="https://icon-library.net/images/upload-photo-icon/upload-photo-icon-21.jpg"/>
  </label>

  <input id="file-input" type="file" />
</div>