PHP E-mail address validation

bukwus · October 21, 2010

I need to know where to put an e-mail validation code in my form so it can check to see if valid e-mail I have tr5ied to place it but nothing seems to work I have attached the form code could some let me know where the validation code would go thanks jim

here is the validation code

function check_email_address($email)

{

// First, we check that there's one @ symbol, and that the lengths are right

if (!ereg("^[^@]{1,64}@[^@]{1,255}$", $email))

{

// Email invalid because wrong number of characters in one section, or wrong number of @ symbols. return false;

}

// Split it into sections to make life easier

$email_array = explode("@", $email); $local_array = explode(".", $email_array[0]);

for ($i = 0; $i < sizeof($local_array); $i++)

{

if (!ereg("^(([A-Za-z0-9!#$%&'*+/=?^_`{|}~-][A-Za-z0-9!#$%&'*+/=?^_`{|}~\.-]{0,63})|(\"[^(\\|\")]{0,62}\"))$", $local_array[$i])) { return false;

}

if (!ereg("^\[?[0-9\.]+\]?$", $email_array[1])) {

// Check if domain is IP. If not, it should be valid domain name

$domain_array = explode(".", $email_array[1]);

if (sizeof($domain_array) < 2)

{

return false;

// Not enough parts to domain }

for ($i = 0; $i < sizeof($domain_array); $i++)

{

if (!ereg("^(([A-Za-z0-9][A-Za-z0-9-]{0,61}[A-Za-z0-9])|([A-Za-z0-9]+))$", $domain_array[$i]))

{

return false;

}

} return true;

}

Form Code

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<head>

</head>

<p class="tenTitle">Exercise 1a: 10 Great Reasons To Be In Business</p></div>

<?php

// SET VARIABLES AND ARRAYS

$stepNumber = '1a';

$numQuestions = '10';

$questions = array(1 => '1. Be your own boss',

'2. Ability to set your own hours and working conditions',

'3. Hard work directly benefits you and your business',

'4. Undertaking an exciting new venture',

'5. Control over earning and growth potential',

'6. Unlimited opportunities to challenge yourself and learn',

'7. Chance to be creative and take risks',

'8. Ability to fully use your skills, knowledge, and talent',

'9. Desire financial independence',

'10. Ability to work in the industry/field of your choice'

);

$numOptions = 5;

$options = array(1 => 'Strongly Agree',

'Agree',

'Neutral',

'Disagree',

'Strongly Disagree'

);

// IF FORM WAS FILLED OUT, CALCULATE SCORE, ELSE SCORE EQUALS 0

$score[] = 0;

for ($i = 1; $i <= $numQuestions; $i++) {

if(isset($_POST['radio'.$i])){

if ($options[$_POST['radio'.$i]] == $options[1]) {

$score[$i] = 5;

}

elseif ($options[$_POST['radio'.$i]] == $options[2]) {

$score[$i] = 4;

}

elseif ($options[$_POST['radio'.$i]] == $options[3]) {

$score[$i] = 3;

}

elseif ($options[$_POST['radio'.$i]] == $options[4]) {

$score[$i] = 2;

}

else {

$score[$i] = 1;

}

else {

$score[$i] = 0;

}

// UNIQUE TO FIRST SESSION OF EACH STEP

$_SESSION['totalScore'] = 0;

// ADD QEUSTIONS AND ANSWERS TO $EMAIL_BODY AND $EMAIL_BODYCC BELOW

// IF FORM WAS SUBMITTED, MOVE ON TO NEXT STEP (ERROR CHECKING)

if(isset($_POST['submit'])) {

// CHECK FOR MISSING DATA (ERROR CHECKING)

for ($i = 1; $i <= $numQuestions; $i++) {

if (empty($_POST['radio'.$i])) {

$problem = TRUE;

$dataSpan[$i] = '<span style="color:red; font-weight:bold;">'.$questions[$i].'</span>';

}

else {

$dataSpan[$i] = $questions[$i];

}

if (empty($_POST['email'])) {

$problem = TRUE;

$emailSpan = '<span style="color:red; font-weight:bold;">*Your email address</span>';

}

else {

$emailSpan = '*Your email address';

}

if (!empty($_POST['emailCc']) && (empty($_POST['name']))) {

$problem = TRUE;

$nameSpan = '<span style="color:red; font-weight:bold;">Your Name</span>';

}

else {

$nameSpan = 'Your Name';

}

// IF MISSING DATA, PREPARE TO DISPLAY FORM. IF NO MISSING DATA, MOVE ON TO NEXT STEP (THANK YOU, SEND EMAILS AND LINK TO NEXT FORM)

if ($problem == TRUE) {

$display = TRUE;

}

else {

$display = FALSE;

}

// IF THE FORM IS NOT BEING SUBMITTED (FIRST VISIT TO PAGE), SET THE

// FORM DISPLAY VARIABLE TO TRUE AND DEFINE VALUES OF DATA#SPAN VARIABLES (QUESTIONS)

else {

$display = TRUE;

for ($i = 1; $i <= $numQuestions; $i++) {

$dataSpan[$i] = $questions[$i];

}

$emailSpan = '*Your email address';

$nameSpan = 'Your Name';

}

if ($display == TRUE) {

print '<p><strong>Instructions</strong>: Below are some of the attitudes and desires that many successful entrepreneurs possess. Read the list carefully. Think about how each of the statements relate to you - your ideas, desires, motivations, and areas of comfort or discomfort. In this exercise, quickly check each category with the answer that best relates to you, then go back and think about each - perhaps you might change your mind with this further refection - you can always come back later and change your answer.</p>';

if ($problem == TRUE) {

print '<p>Please fill in questions marked in <span style="color:red; font-weight:bold;">red</p>';

}

print '<div id="tenForm">

<table border="0" cellpadding="4" cellspacing="3">';

for ($i = 1; $i <= $numQuestions; $i++) {

echo '<tr>

<p>'.$dataSpan[$i].'</p>';

for ($j = 1; $j <= $numOptions; $j++) {

$elemID = "radio" . $i . "_" . $j;

$elemName = "radio" . $i;

$chk = "";

if(isset($_POST[$elemName])) {

if($_POST[$elemName] == ((string) $j)) {

$chk = "CHECKED";

}

echo "<input type=\"radio\" id=\"$elemID\" name=\"$elemName\" $chk value=\"$j\">$options[$j]\n";

}

print '</td>

</tr>';

}

print '</table>

<tr>

<td align="left" valign="top" border="0">';

include ($filePath.'/e-learning/tenScores.html');

print '</th>

</tr>

<tr>

Submitting the form (* = required)

</th>

</tr>

<tr>

'.$emailSpan.'<br />

(to receive a copy of this form)<br />

</td>

</tr>

<tr>

Send Copy To eMentor<br />

</td>

</tr>

<tr>

'.$nameSpan.'<br />

(*required if sending a copy)<br />

</td>

</tr>

<tr>

<a href="'.$filePathState.'about_privacy.html" target="_blank"><span style="font-size:9px;">View our privacy policy</span></a>

</td>

</tr>

</table>

</form>

</div>';

}

else {

// DEFINE SESSION VARIABLES

$_SESSION['email']=$_POST['email'];

$_SESSION['emailCc']=$_POST['emailCc'];

$_SESSION['name']=$_POST['name'];

$_SESSION['score'.$stepNumber]=array_sum($score);

$_SESSION['totalScore'] = $_SESSION['totalScore'] + $_SESSION['score'.$stepNumber];

// DEFINE VARIABLES FOR MAILING TO USER AND BUZGATE

$to = 'askbuz@buzgate.org,'.$_POST['email'];

$email_subject = "Your Results: 10 Great Reasons To Be In Business";

for ($i = 1; $i <= $numQuestions; $i++) {

$eBodyQuestions .= $questions[$i]."\n"

.$options[$_POST[radio.$i]]."\n\n";

}

$email_body = $eBodyQuestions."Score: ".array_sum($score)."\n

INTERPRETING THE SCORE:\n

Score of 34-50: High Match\n

Score of 21-35: Medium Match\n

Score of 0-20: Low Match\n

Total Score: ".$_SESSION['totalScore']."\n\n";

$headers = "From:".$_POST['email'];

//PLACE VARIABLES IN MAIL FUNCTION

mail($to, $email_subject, $email_body, $headers);

// DEFINE VARIABLES FOR MAILING TO USER AND BUZGATE

$toCc = $_POST['emailCc'];

$email_subjectCc = "Your Results: 10 Great Reasons To Be In Business from ".$_POST['name'];

$email_bodyCc = $_POST['name']." has sent this to you from www.BUZGate.org/8.0/".$state_abbrv_low."/".$page_name."\n

Please contact us at askbuz@buzgate.org if you have received this in error.\n\n";

$email_bodyCc = $email_bodyCc.$email_body;

$headersCc = "From:askbuz@buzgate.org";

//PLACE VARIABLES IN CC MAIL FUNCTION

mail($toCc, $email_subjectCc, $email_bodyCc, $headersCc);

// DISPLAY RESPONSE TO CORRECTLY FILLING OUT FORM

echo "<p class='textCenter' >Thank you ".$_POST['name']." for completing Step ".$stepNumber."</p>

<p class='textCenter'>Your Step ".$stepNumber." Score: ".$_SESSION['score'.$stepNumber]."<br />

Your Total Score: ".$_SESSION['totalScore']."</p>";

include ($filePath.'/inc2/tenScores.html');

echo "<p class='textCenter'><a href='ten_steps_1b.html'>Click here</a> to continue to 1b: 10 Great Reasons Not To Be In Business</p>" ;

}

?>

</div> <div id="footer"></div></div>

</body>

</html>

Pikachu2000 · October 21, 2010

Couple things. When posting code, please indent it properly, and use the

 . . .

or

 . . .

BBCode tags to contain it. ereg functions are deprecated, and will cease to function in a future release of PHP.

At any rate, what do you mean "nothing seems to work"?

ultimatum · October 21, 2010

Your email validation function is GIANT, you can use javascript prior to submitting the form to validate email address entered. It's easy, quick and does not require server side processing.

TIP: Break your script up into many pieces and just include_once() function for the parts you need when you need them.

logic example:

if SUBMIT is pushed
   check values
      if values are incorrect
         include_once("initial_form.html/php");
      else
         move on
else
   include_once("initial_form.html/php");

This will make your code look cleaner and more ogranized, plus easier to follow.

Pikachu2000 · October 21, 2010

The problem with using javascript is that javascript is NOT validation. It still needs to be validated server-side.

Colton.Wagner · October 21, 2010

However you can use AJAX to submit an email to a php script to check the validity of an email. Seen in a script I just wrote here.

http://kno3technology.com/apps/price.php

All the javascript does is move the data without reloading the page. The javascript then checks for an xml response from the php page specified.

Thanks,

Colton Wagner

Pikachu2000 · October 21, 2010

Right, but the validation is still performed server-side. Checking things like that solely client-side is nothing more than a convenience to the user to prevent the need to submit, then correct, then submit, then correct, etc.

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PHP E-mail address validation

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