Untitled

<?php

$title="";
$author="";
$school="";
$journal="";
$pubYear="";
$doi="";

$error="";

function clean_text($string)
{
 $string = trim($string);
 $string = stripslashes($string);
 $string = htmlspecialchars($string);
 return $string;
}

if(isset($_POST["submit"]))
{
  // Title
 if(empty($_POST["title"]))
 {
  $error .= '<p><label class="text-danger">Please Enter your title</label></p>';
 }
 else
 {
  $title = clean_text($_POST["title"]);
  if(!preg_match("/^[a-zA-Z ]*$/",$title))
  {
   $error .= '<p><label class="text-danger">Only letters and white space allowed</label></p>';
  }
  }
// Author
 if(empty($_POST["author"]))
 {
  $error .= '<p><label class="text-danger">Please Enter the author.</label></p>';
 }
 else
 {
  $author = clean_text($_POST["author"]);
  if(!preg_match("/^[a-zA-Z ]*$/",$author))
  {
   $error .= '<p><label class="text-danger">Only letters and white space allowed</label></p>';
  }
   }
// School
 if(empty($_POST["school"]))
 {
  $error .= '<p><label class="text-danger">School is required</label></p>';
 }
 else
 {
  $school = clean_text($_POST["school"]);
 }
 // pubyear

 if(empty($_POST["pubYear"]))
 {
  $error .= '<p><label class="text-danger">Publication Year is required</label></p>';
 }
 else
 {
   $pubYear = clean_text($_POST["pubYear"]);
   if(!preg_match("/^[1-9][0-9]*$/",$pubYear));
 }

  // Journal
  if(empty($_POST["author"]))
  {
   $error .= '<p><label class="text-danger">Please Enter the author.</label></p>';
  }
  else
  {
   $journal = clean_text($_POST["journal"]);
   if(!preg_match("/^[a-zA-Z ]*$/",$journal))
   {
    $error .= '<p><label class="text-danger">Only letters and white space allowed</label></p>';
   }
    }
  // DOI

  if(empty($_POST["doi"]))
  {
   $error .= '<p><label class="text-danger">DOI is required</label></p>';
  }
  else
  {
    $doi = clean_text($_POST["doi"]);
  }


if($error == '')
 {
  $openFile= fopen("publications.csv", "a");

  $formData = array(
   'title'  => $title,
   'author'  => $author,
   'school' => $school,
   'pubYear' => $pubYear,
   'journal' => $journal,
   'doi' => $doi
  );

  fputcsv($openFile, $formData);
  $error = '<label class="text-success">Successfully submitted publication.</label>';
  $title = '';
  $author = '';
  $school = '';
  $journal = '';
  $pubYear = '';
  $doi = '';
 }
}

?>

<!DOCTYPE html>
<html>
 <head>
  <title>Online Publication Repository</title>
  <link rel="stylesheet" type="text/css" href="submit.css" />

 </head>
 <body>
  <br />
  <div class="container">
   <h2 align="center">Online Publication Repository</h2>
   <br />
    <form method="post">
     <h3 align="center">Enter the relevant information below.</h3>
     <br />

     <?php echo $error; ?>

     <div class="form-group">
      <label>Enter Title</label> <br />
      <input type="text" name="title" placeholder="Enter Title" class="form-control" value="<?php echo $title; ?>" /> <br />

      <label>Enter Author</label> <br />
      <input type="text" name="author" class="form-control" placeholder="Enter Author" value="<?php echo $author; ?>" /> <br />

      <label>Enter School</label> <br />
      <select name="school" class="form-control" value="<?php echo $school; ?>" />
        <option>School of Chemical and Physical Sciences</option>
        <option>School of Computing and Maths</option>
        <option>School of Geography, Geology and the Environment</option>
        <option>School of Life Sciences</option>
        <option>School of Physical and Geographical Sciences</option>
        <option>School of Psychology</option>
      </select>  <br />

      <label>Enter Publication Year</label> <br />
      <input type="number" name="pubYear" class="form-control" placeholder="Enter Publication Year" value="<?php echo $pubYear; ?>" /> <br />

      <label>Journal</label> <br />
      <input type="text" name="journal" placeholder="Enter Journal" value="<?php echo $journal; ?>" /> <br />

      <label>Digital Object Identifier (DOI)</label> <br />
      <input type="text" name="doi" placeholder="Enter DOI" value="<?php echo $doi; ?>" />  <br />

      <input type="submit" name="submit" class="btn btn-info" value="Submit" />
     </div>
    </form>
  </div>
 </body>
</html>