PHP5 Email Validation

By Bill on February 10, 2009 in PHP

In prior version of PHP you had to use some regex solution to validate an email address, now in PHP5 it’s as simple as:

function isValidEmail($email){
 return filter_var(filter_var($email, FILTER_SANITIZE_EMAIL), FILTER_VALIDATE_EMAIL);
}

if(isValidEmail('email@domain.com')){
//valid
} else {
//not valid
}

function isValidEmail($email){

return filter_var(filter_var($email, FILTER_SANITIZE_EMAIL), FILTER_VALIDATE_EMAIL);

}

if(isValidEmail('[email protected]')){

//valid

} else {

//not valid

}

I’ve been using PHP5 ever since it was released but didn’t look into the PECL Filter extension until recently. Pretty handy.

Please note that I also added the FILTER_SANITIZE_EMAIL filter which removes all illegal e-mail characters from a string. This is not needed if you only want to validate and not clean the input. 🙂

email validation, PHP

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http://caramelfrapuccinolovers.blogspot.com dewi was here

first comment :p
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http://goodies.lemonsoftware.eu cristian

Well, try:

echo filter_var(filter_var(“John(Doe)@exa\\mple.com”, FILTER_SANITIZE_EMAIL), FILTER_VALIDATE_EMAIL);

still is not a valid email address (wrong domain).

Note that this these functions only validate the structure of email address or URL strings, they don’t check if the associated domains actually exist.
Bill

@cristian: you’re absolutely right. I was not trying to imply that it checks if a domain exist but I should have been more clear on this. Sorry about that. Also note that even if you check if the domain exists via cURL or method of your choice, it still would not prove it’s a valid working email.

Would you like me to post an example to check if a domain exists?
Pingback: PHP: Check if a URL exists with cURL | Bill Richards()
CSSguru

nice and usefull blog!… keep up the good work.
http://www.robsymonds.com Rob

Just found this and it worked perfectly to replace my deprecated ereg() function. Thanks.
Ahmed Ragae

thanks for this blog but we chose this mail and try it
if(isValidEmail(’[email protected]’)){
echo “mail is valid”;
} else {
echo “mail is not valid “;
}

// the result will be mail is valid
//so, its true or false
Hm

helpful
Abirami R

thanks..

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Wonderful blog & good post.Its really helpful for me….

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N.R. Rao

Excellent posting. Thanks
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It showing some error. anyway thanks for sharing.
ananthi ayiram

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Code is not working. I have tried the same way but still showing errors.Is it works well on official mail ?
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