PHP Validate Two Emails If Match or Not?

siabanie

Hi all,

I need some favour about checking if the first email that user entered was match with the confirmation email otherwise show an error message: "The email address is not match" or something like that..

Here is the snippets of error checking for email and email_1 if it is empty - but I don't know how I can add another validate if both of the emails match or not? And do I need to add them in PHP code?

Please suggest, any help would be highly appreciated.

..
..
 $('[name=email]').parent().removeClass('error');
      if($('[name=email]').val()=="" || $('[name=email_1]').val()==""){
        error_num++;
        error_mesg += "Please enter E-mail\n";
        $('[name=email]').parent().addClass('error');
        //if($('[name=tel_p2]').val()=="" ) 
      }
..

Form HTML + PHP

..
<tr>
        <td bgcolor="#F6F6F6">E-mail<span class="green"> *</span></td>
        <td colspan="2" bgcolor="#FFFFFF"><input name="email" type="text" size="40" value="<?php echo $_SESSION["email"];?>" />
	 <td>
      </tr>
	  <tr>
        <td bgcolor="#F6F6F6">E-mail Confirmation<span class="green"> *</span></td>
        <td colspan="2" bgcolor="#FFFFFF"><input name="email" type="text" size="40" value="<?php echo $_SESSION["email"];?>" />
	 <td>
      </tr>
...

Thanks alot.

bradgrafelman

I'm confused... the title of your thread suggests that you're wanting to do the validation in PHP, and yet the code you showed us is not PHP but instead Javascript. So.. which is it?

siabanie wrote:
And do I need to add them in PHP code?

That depends on whether or not you want any of the validation being performed to actually matter. Client-provided data should never be trusted, and since Javascript is a client-side scripting language that means you should assume any type of validation you do in Javascript isn't enforced and can easily be bypassed. In other words, repeat all of the validation in the server-side code as well.

siabanie

bradgrafelman;10985334 wrote:
I'm confused... the title of your thread suggests that you're wanting to do the validation in PHP, and yet the code you showed us is not PHP but instead Javascript. So.. which is it?

Sorry bradgrafelman for the confusion.. What do you mean by "performed to actually matter"?

Well I would like the validation to be in JavaScript but I also would like to see how it can be implemented in PHP? As you said, in JavaScript it is less safer so I would be appreciated if you could show me how I can do in both methods please?

Thanks.

bradgrafelman

siabanie;10985337 wrote:
Sorry bradgrafelman for the confusion.. What do you mean by "performed to actually matter"?

I was simply trying to suggest that relying on any sort of Javascript validation is unwise, since it can be easily bypassed.

siabanie;10985337 wrote:
show me how I can do in both methods please?

Unless I'm missing something, you're just asking how to check if two strings are equal to each other? So, erm... just do something like:

if(string1 != string2) {
    // they don't match...
}

siabanie

bradgrafelman;10985342 wrote:
I was simply trying to suggest that relying on any sort of Javascript validation is unwise, since it can be easily bypassed.

Unless I'm missing something, you're just asking how to check if two strings are equal to each other? So, erm... just do something like:
if(string1 != string2) {
    // they don't match...
}
?

I see okay - thanks for the idea; you mean like this:

//If first email address is empty show error msg
  $('[name=email]').parent().removeClass('error');
      if($('[name=email]').val()==""){
        error_num++;
        error_mesg += "E-mail&#12290;\n";
        $('[name=email]').parent().addClass('error');
      }

//If second email address is empty show error msg
	  $('[name=email_1]').parent().removeClass('error');
      if($('[name=email_1]').val()==""){
        error_num++;
        error_mesg += "Please confirm your email\n";
        $('[name=email_1]').parent().addClass('error');
      }

//If first email and second email address not match show error msg	  

    $('[name=email_1]').parent().removeClass('error');
      if($('[email != email_1]').val()){
        error_num++;
        error_mesg += "E-mail not match\n";
        $('[name=email_1]').parent().addClass('error');
      }

The first and second JS (when fields are empty) are giving me an error but the third one did not work.

I am not exactly sure how it should be written. I tried I need to add something like this:

$('[name=email]').parent().removeClass('error') && $('[name=email_1]').parent().removeClass('error');
   if($('[name=email != name=email_1]').val()){
        error_num++;
        error_mesg += "E-mail not match\n";
        $('[name=email]').parent().addClass('error') && $('[name=email_1]').parent().addClass('error');
      }

...but it did not work.....anyone please?

Ashley_Sheridan

First, that is Javascript and not PHP.

Second, using Jquery selectors like that is incredibly slow, as you're essentially asking JQuery to find any and all elements on the page (not just form elements) that have an attribute called name that's equal to either 'email_1' or 'email_2'. To make it faster try:

$('input[name=email_1]')

It will run a lot more quickly and won't cause problems later with other elements on the page that have a matching name attribute. The key is to be specific with selectors in this order:

ID
tag
class
attribute

The code you've given won't work at all, and I'm surprised you don't see any errors in your browser. The quotes are all over the place and, well just and... Try something like this instead:

if($('input[name=email]').val() != $('input[name=email_1]').val())

As brad mentioned before as well, you need to do this again in PHP as well, because circumventing Javascript validation is as simple as turning it off in the browser.

siabanie

Ashley Sheridan;10985675 wrote:
As brad mentioned before as well, you need to do this again in PHP as well, because circumventing Javascript validation is as simple as turning it off in the browser.

Thanks Ashley,

Yes I kind of get the idea now thanks - but what mean by I need to do this again in PHP? What is it can you please show me what you mean by that.

Thanks.