PHP E-Mail validation

[Dynasty]

The following bit of code checks if an email in in a standard for as in like name@domain.whatever


$email = <email to check>;
$mail = ".+@.+\..+";
if(eregi($mail,$email))
{
<success code here>
}
else
{
<fail code here>
}

Replacing the bits in the <> with appropriate things of course. Just thought that may be helpful.

[-TheDarkEye-]

here is how i would do the same thing in coldfusion:

function IsEmail(Email)
{
if (REFindNoCase("^['_a-z0-9-]+(\.['_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*\.(([a-z]{2,3})|(aero|coop|info|museum|name))$", Email))
{
return TRUE;
}
else
{
return FALSE;
}
}

it uses a regular expression, which is very strict about what it will verify as real email address. you might want to consider converting it to php...

[Josh]

Originally posted by Dynasty
The following bit of code checks if an email in in a standard for as in like name@domain.whatever


$email = <email to check>;
$mail = ".+@.+\..+";
if(eregi($mail,$email))
{
<success code here>
}
else
{
<fail code here>
}

Replacing the bits in the <> with appropriate things of course. Just thought that may be helpful.
could u explain what eregi() function does.thanks:)

[-TheDarkEye-]

you need to visit php.net. ;)

http://www.php.net/manual/en/function.eregi.php

it is a regualar expression function and it is case-insensitive.

[Josh]

Thanks now I understand:cool:

[Dynasty]

Regular expressions are evil little things :monkey: :weee:

[-TheDarkEye-]

well, maby you need to read more about them?

[Dynasty]

Hehe.

[-TheDarkEye-]

i think its fairly straight forward if you know what all the special characters mean.

[Sky]

what DO they mean?? :eek:

[-TheDarkEye-]

it would be a major buzz killer if i had to answer you right now. so ill just give you a link:

http://livedocs.macromedia.com/cfmxdocs/Developing_ColdFusion_MX_Applications_with_CFML/regexp3.jsp#1117230

i think that should cover just about all of it.

[pauladams]

This is a code:-

f(isset($todo) and $todo=="test"){
if (!eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$", $email)){
echo "<center>Invalid email</center>";
}else{
echo "<center>Valid Email</center>";}
}

[heianzi]

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[whywhy]

Code must write more detailed will be OK~~

[ExpertsGuide]

@ "pauladams", what if the TLD is more than 3 characters long, like , .asia .aero .travel etc.
Your code wont work, right?