Security Question and Bold Text in Email

[thesaleboat]

Hey guys, I just started programming 3 months ago in php.  I have just created a page for people to fill out their resume on my company's website and am want to make sure before I upload it that it is safe to.  How would i make it more difficult for someone to just repeatedly submit the form to be emailed.  Here is my code, hope this question isn't too retarded.  :-X

 

I am also wondering how i would make the Headers bold; so that First Name, Middle Initial, Last Name etc. are bold in the email that is sent.  Thanks guys in advance.

 

<?php

// Get Information from form

$FirstName=$_POST['FirstName'];

$MiddleInitial=$_POST['MiddleInitial'];

$LastName=$_POST['LastName'];

$TelephoneNumber=$_POST['TelephoneNumber'];

$EmailAddress=$_POST['EmailAddress'];

$HomeAddress=$_POST['HomeAddress'];

$SecurityClearance=$_POST['SecurityClearance'];

$Education=$_POST['Education'];

$ProfessionalExperience=$_POST['ProfessionalExperience'];

$ProfessionalLicenses=$_POST['ProfessionalLicenses'];

$ComputerProficiency=$_POST['ComputerProficiency'];

$Miscellaneous=$_POST['Miscellaneous'];

 

//verify EmailAddress is actually valid

$EmailAddress = trim($EmailAddress);

$_name = "/^[-!#$%&\'*+\\.\/0-9=?A-Z^_`{|}~]+";

$_host = "([-0-9A-Z]+\.)+";

$_tlds = "([0-9A-Z]){2,4}$/i";

 

$to = "[email protected]";

$subject = "Online Resume Submittion";//.", From: ".$FirstName." ".$LastName;

$EmailAddress=$_POST['EmailAddress'];//reset EmailAddress

$from = "From: ".$EmailAddress;

 

$message = "First Name: \n".$FirstName." ";

$message .= "\n\n\nMiddle Initial: \n".$MiddleInitial." ";

$message .= "\n\n\nLast Name: \n".$LastName." ";

$message .= "\n\n\nTelephone Number: \n".$TelephoneNumber." ";

$message .= "\n\n\nEmail Address: \n".$EmailAddress." ";

$message .= "\n\n\nHome Address: \n".$HomeAddress." ";

$message .= "\n\n\nSecurity Clearance: \n".$SecurityClearance." ";

$message .= "\n\n\nEducation: \n".$Education." ";

$message .= "\n\n\nProfessional Experience: \n".$ProfessionalExperience." ";

$message .= "\n\n\nProfessional Licenses: \n".$ProfessionalLicenses." ";

$message .= "\n\n\nComputer Proficiency: \n".$ComputerProficiency." ";

$message .= "\n\n\nMiscellaneous: \n".$Miscellaneous." ";

 

mail($to, $subject, $message, $from); //Send EmailAddress to them

echo "Thank you for your application, we will be in contact with you shortly if you meet the job description requirements.";

echo '<meta content="4; URL=index.htm" http-equiv="Refresh" />';

?>

[Stooney]

For the bold question, see example #4 here - http://us.php.net/manual/en/function.mail.php

 

As for making it so they can only click once to submit, just use a little bit of javascript to disable the submit onclick.