php - validation always showing enter all fields -


the problem whenever loading page, getting enter fields, there anyway bypass whenever load page first time.

<form action="brand_upload.php" method="post" enctype="multipart/form-data">  <label for="file">filename(logo):</label> <input type="file" name="file" id="file"><br>  <br>brand:<input type="text" name="brand"> <br>serial no.:<input type="text" name="serial_number"> <input type="submit" name="submit" value="submit">   <?php if (isset ($_post['submit']) && isset($_post['brand']) && isset($_post['serial_number']) && !empty($_post['brand']) && !empty($_post['serial_number'])){ {   echo 'do something'; } else {   echo '<br>enter fields'; } ?>  </form>

you can check if request method post

<?php if($_server['request_method'] == 'post'){ if (isset ($_post['submit']) && isset($_post['brand']) && isset($_post['serial_number']) && !empty($_post['brand']) && !empty($_post['serial_number'])){ {   echo 'do something'; } else {   echo '<br>enter fields'; } } ?>

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