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My insert code is not posting into the database


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My insert code is not posting into the database when i wrap the insert query between this conditional statement: if(empty($reg_errors)){ ...post to database..}, would appreciate your thoughts.

<?php
require_once('./includes/connection.inc.php');
  // create database connection
  $conn = dbConnect('read');
if (isset($_POST['insert'])) {
// Define post fields into simple variables
$first_name = $_POST['first_name'];
$last_name = $_POST['last_name'];
$sex = $_POST['sex'];

// verify register_donor input // check last_name field
if(!preg_match("/^[A-Z][a-zA-Z -]+$/", $_POST["last_name"]))
    {
        // set error for last_name field
        $reg_errors['last_name'] = '<p class="warning">Last Name must contain letters, dashes and spaces only and must start with upper case letter</p>';
    }
if(!preg_match("/^[A-Z][a-zA-Z -]+$/", $_POST["first_name"]))
    {
        // set error for first_name field
        $reg_errors['first_name'] = '<p class="warning">First Name must contain letters, dashes and spaces only and must start with upper case letter</p>';
    }
if(!preg_match("/^[a-zA-Z]+$/", $_POST["sex"]))
    {
        // set error for sex field
        $reg_errors['sex'] = '<p class="warning">Donor sex must contain letters only and must start with upper case letter</p>';
    }
    // if no errors are set, inset record into database
if(empty($reg_errors)){  
  // initialize flag
  $OK = false;
  // initialize prepared statement
  $stmt = $conn->stmt_init();
  // create SQL
  $sql = 'INSERT INTO register_donor (
			donor_id,
			last_name,
			first_name,
			sex)
		VALUES(?, ?, ?, ?)';
  if ($stmt->prepare($sql)) {
	// bind parameters and execute statement
	$stmt->bind_param('isss', $_POST['donor_id'], $_POST['last_name'],$_POST['first_name'], $_POST['sex']);
    // execute and get number of affected rows
	$stmt->execute();
	if ($stmt->affected_rows > 0) {
	  $OK = true;
	}
  }
  // redirect if successful or display error
  if ($OK) {
	echo 'success';
	exit;
  } else {
	$error = $stmt->error;
  }
}}
?>
<!DOCTYPE html>
<html lang="en">
<head>
</head>
	<body>
	    <div class="container_12 main">
		<div class="grid_12">
		      <div class="grid_8 omega" id="main">
			    <fieldset>
				<legend><h2>Register New Donor:</h2></legend>
				     <p>
					<?php  
						if (isset($error)) {
						echo "<p class=\"warning\">Error: $error</li>";
						} 
					?>
					</p>
					<form id="form1" method="post" action="">			  
						<table border="0">
							<tr>
							     <th>
								<label for="last_name">Last Name:</label>
							     </th>
							     <td>
								<?php if(isset($reg_errors['last_name'])) echo $reg_errors['last_name'];?>
								<input type="text" name="last_name" class="widebox" required aria-required="true" id="last_name" <?php if(isset($reg_errors)) { 
								 echo 'value="'.htmlentities($last_name, ENT_COMPAT, 'UTF-8') .'"';
								} ?>>
							     </td>
							     </tr>
							     <tr>
								<th><label for="first_name">First Name:</label></th>
								 <td>
								    <?php if(isset($reg_errors['first_name'])) echo $reg_errors['first_name'];?>
								    <input name="first_name" type="text" class="widebox" required aria-required="true" id="first_name" <?php if(isset($reg_errors)) { 
								     echo 'value="'.htmlentities($first_name, ENT_COMPAT, 'UTF-8') .'"';
								     } ?>>
								   </td>
								   </tr>
								   <tr>
								 	<th><label for="sex">Sex:</label></th>
									<td>
								        <?php if(isset($reg_errors['sex'])) echo $reg_errors['sex'];?>
									 <select name="sex" id="sex" required aria-required="true">
									   <option>													
									   <option>
									   <option>
									     Male
									   </option>
									   <option>
									     Female
									   </option>
									  </select>
									</td>
									</tr>
									
								</table>
							<p>
							<input type="submit" name="insert" value="Register New Donor" id="insert">
						    </p>
						</form>
						</fieldset>
			        </div>	
				</div>
	</body>
</html>
Edited by terungwa

if $reg_errors is not empty, how about displaying what errors were detected and are stored in it?

if $reg_errors is not empty, then the regex validation fails and the variable $reg_errors is displayed for the affected field for example in the last_name field i would have this: 

 <?php if(isset($reg_errors['last_name'])) echo $reg_errors['last_name'];?>

.

 

I am using a flag $OK, which is a Boolean variable that is initialized to either true or false and i am using it to check whether my query has

happened. For instance, i set $OK to false and reset to true only when a database query executes successfully,

// what to do if successful or show me an error
  if ($OK) {
	echo 'success';
	exit;
  } else {
	$error = $stmt->error;
  }

I am then using this to to display the error message if the insert operation fails: but i am not getting any errors even though the insert query is obviously failing.

<?php if (isset($error)) {
echo "<p>Error: $error</p>";
} ?>

What is $_POST['donor_id']?  There does not appear to be field with that name in your form.

 

If it is an auto-increment field then you do not need to reference it in the insert query. You only need to reference the fields you're adding the values to.

What is $_POST['donor_id']?  There does not appear to be field with that name in your form.

 

If it is an auto-increment field then you do not need to reference it in the insert query. You only need to reference the fields you're adding the values to.

Thanks, i have removed that.

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