contact form php and jquery fight

[greentrancer]

hello. in my contact form i have 2 validators, one in jquery and one in php. the problem is next. this is the jquery where checks the email and it works perfectly ( i know that this regex is from php ).

function validateEmail() {
var filter = /^(?!(??:\x22?\x5C[\x00-\x7E]\x22?)|(?:\x22?[^\x5C\x22]\x22?)){255,})(?!(??:\x22?\x5C[\x00-\x7E]\x22?)|(?:\x22?[^\x5C\x22]\x22?)){65,}@)(??:[\x21\x23-\x27\x2A\x2B\x2D\x2F-\x39\x3D\x3F\x5E-\x7E]+)|(?:\x22(?:[\x01-\x08\x0B\x0C\x0E-\x1F\x21\x23-\x5B\x5D-\x7F]|(?:\x5C[\x00-\x7F]))*\x22))(?:\.(??:[\x21\x23-\x27\x2A\x2B\x2D\x2F-\x39\x3D\x3F\x5E-\x7E]+)|(?:\x22(?:[\x01-\x08\x0B\x0C\x0E-\x1F\x21\x23-\x5B\x5D-\x7F]|(?:\x5C[\x00-\x7F]))*\x22)))*@(??:(?!.*[^.]{64,})(??:(?:xn--)?[a-z0-9]+(?:-[a-z0-9]+)*\.){1,126}){1,}(??:[a-z][a-z0-9]*)|(??:xn--)[a-z0-9]+))(?:-[a-z0-9]+)*)|(?:\[(??:IPv6:(??:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){7})|(??!(?:.*[a-f0-9][:\]]){7,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?:?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?)))|(??:IPv6:(??:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){5}|(??!(?:.*[a-f0-9]{5,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3})?:?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3}?)))?(??:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))(?:\.(??:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))){3}))\]))$/;
if(filter.test(email.val()))

when i'm trying to put it in php, it doesn't work anymore.

function validateEmail($email){
	return ereg("^(?!(??:\x22?\x5C[\x00-\x7E]\x22?)|(?:\x22?[^\x5C\x22]\x22?)){255,})(?!(??:\x22?\x5C[\x00-\x7E]\x22?)|(?:\x22?[^\x5C\x22]\x22?)){65,}@)(??:[\x21\x23-\x27\x2A\x2B\x2D\x2F-\x39\x3D\x3F\x5E-\x7E]+)|(?:\x22(?:[\x01-\x08\x0B\x0C\x0E-\x1F\x21\x23-\x5B\x5D-\x7F]|(?:\x5C[\x00-\x7F]))*\x22))(?:\.(??:[\x21\x23-\x27\x2A\x2B\x2D\x2F-\x39\x3D\x3F\x5E-\x7E]+)|(?:\x22(?:[\x01-\x08\x0B\x0C\x0E-\x1F\x21\x23-\x5B\x5D-\x7F]|(?:\x5C[\x00-\x7F]))*\x22)))*@(??:(?!.*[^.]{64,})(??:(?:xn--)?[a-z0-9]+(?:-[a-z0-9]+)*\.){1,126}){1,}(??:[a-z][a-z0-9]*)|(??:xn--)[a-z0-9]+))(?:-[a-z0-9]+)*)|(?:\[(??:IPv6:(??:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){7})|(??!(?:.*[a-f0-9][:\]]){7,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?:?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?)))|(??:IPv6:(??:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){5}|(??!(?:.*[a-f0-9]{5,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3})?:?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3}?)))?(??:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))(?:\.(??:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))){3}))\]))$", $email);
}

if i put the next code instead of the one from up, it works.

function validateEmail($email){
	return ereg("^[a-zA-Z0-9]+[a-zA-Z0-9_-]+@[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+.[a-z]{2,4}$", $email);
}

does anyone have any idea ? thank you.

[abareplace]

Use preg_match instead of ereg. POSIX regular expressions (the ereg function) are depreciated; you should use PCRE.

[AyKay47]

The first regex will match unicode characters, the second will match normal ASCII characters (a,b,c etc..).

[greentrancer]

i tried preg_match instead of ereg and it's not working. i am beginner in php, but i will learn it in the future. for now, i just want to make this working for my contact form. do you have any idea how to fix it ? i cannot use filter_var because this validators are in another file. i think that i need a good regex which checks the email. thank you very much.

[AyKay47]

an email regex:

 

$pattern = "~\b[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}\b~i";
$string = "example@example.com";
if(preg_match($pattern,$string,$ms))
{
//email is valid
print_r($ms);
}

 

Edit: Good catch by Zane as well that you should look into.

[Zane]

Unlike ereg POSIX regex functions, the preg PCRE regex functions require the delimiters at the beginning and end, just like you have in your jQuery regex.

So your preg_match, should look like this

return preg_match("/^(?!(??:\x22?\x5C[\x00-\x7E]\x22?)|(?:\x22?[^\x5C\x22]\x22?)){255,})(?!(??:\x22?\x5C[\x00-\x7E]\x22?)|(?:\x22?[^\x5C\x22]\x22?)){65,}@)(??:[\x21\x23-\x27\x2A\x2B\x2D\x2F-\x39\x3D\x3F\x5E-\x7E]+)|(?:\x22(?:[\x01-\x08\x0B\x0C\x0E-\x1F\x21\x23-\x5B\x5D-\x7F]|(?:\x5C[\x00-\x7F]))*\x22))(?:\.(??:[\x21\x23-\x27\x2A\x2B\x2D\x2F-\x39\x3D\x3F\x5E-\x7E]+)|(?:\x22(?:[\x01-\x08\x0B\x0C\x0E-\x1F\x21\x23-\x5B\x5D-\x7F]|(?:\x5C[\x00-\x7F]))*\x22)))*@(??:(?!.*[^.]{64,})(??:(?:xn--)?[a-z0-9]+(?:-[a-z0-9]+)*\.){1,126}){1,}(??:[a-z][a-z0-9]*)|(??:xn--)[a-z0-9]+))(?:-[a-z0-9]+)*)|(?:\[(??:IPv6:(??:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){7})|(??!(?:.*[a-f0-9][:\]]){7,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?:?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?)))|(??:IPv6:(??:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){5}|(??!(?:.*[a-f0-9]{5,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3})?:?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3}?)))?(??:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))(?:\.(??:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))){3}))\]))$/", $email);

Maybe you tried that already, but I'm just sayin'.. you need those forward slashes for PCRE regex.

[greentrancer]

i tried now again and something it's working. if i put the email johnsmith@example.com it's working, but when i put john.smith@example.com it's not working anymore. i don't understand.

 

i just discovered that even if i use return preg_match("/^[a-zA-Z0-9]+[a-zA-Z0-9_-]+@[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+.[a-z]{2,4}$/", $email); the problem it's the same.  :wtf:

 

thank you!

[Zane]

The easiest solution to this is to Google "valid email regex pcre" and see what comes up.  Find and try every decent regex until one works the way you want.  Somewhere out there in the intertubes lies the epitome of an email regex; one much better than you could probably ask for to be written.

[AyKay47]

i tried now again and something it's working. if i put the email johnsmith@example.com it's working, but when i put john.smith@example.com it's not working anymore. i don't understand.

 

i just discovered that even if i use return preg_match("/^[a-zA-Z0-9]+[a-zA-Z0-9_-]+@[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+.[a-z]{2,4}$/", $email); the problem it's the same.  :wtf:

 

thank you!

 

curious, have you tried the pattern that I gave you?

[greentrancer]

AyKay47, i tried now your regex and it's working. i also tried to replace your regex with this one

/^(?!(??:\x22?\x5C[\x00-\x7E]\x22?)|(?:\x22?[^\x5C\x22]\x22?)){255,})(?!(??:\x22?\x5C[\x00-\x7E]\x22?)|(?:\x22?[^\x5C\x22]\x22?)){65,}@)(??:[\x21\x23-\x27\x2A\x2B\x2D\x2F-\x39\x3D\x3F\x5E-\x7E]+)|(?:\x22(?:[\x01-\x08\x0B\x0C\x0E-\x1F\x21\x23-\x5B\x5D-\x7F]|(?:\x5C[\x00-\x7F]))*\x22))(?:\.(??:[\x21\x23-\x27\x2A\x2B\x2D\x2F-\x39\x3D\x3F\x5E-\x7E]+)|(?:\x22(?:[\x01-\x08\x0B\x0C\x0E-\x1F\x21\x23-\x5B\x5D-\x7F]|(?:\x5C[\x00-\x7F]))*\x22)))*@(??:(?!.*[^.]{64,})(??:(?:xn--)?[a-z0-9]+(?:-[a-z0-9]+)*\.){1,126}){1,}(??:[a-z][a-z0-9]*)|(??:xn--)[a-z0-9]+))(?:-[a-z0-9]+)*)|(?:\[(??:IPv6:(??:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){7})|(??!(?:.*[a-f0-9][:\]]){7,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?:?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?)))|(??:IPv6:(??:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){5}|(??!(?:.*[a-f0-9]{5,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3})?:?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3}?)))?(??:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))(?:\.(??:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))){3}))\]))$/

and it's not working. i don't understand how it's working in jqery variable and in php not.

 

to be clear, this it's working

function validateEmail($email){
$pattern = "~\b[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}\b~i";
        return preg_match($pattern,$email)
    }  

and this one not

function validateEmail($email){
$pattern = "/^(?!(??:\x22?\x5C[\x00-\x7E]\x22?)|(?:\x22?[^\x5C\x22]\x22?)){255,})(?!(??:\x22?\x5C[\x00-\x7E]\x22?)|(?:\x22?[^\x5C\x22]\x22?)){65,}@)(??:[\x21\x23-\x27\x2A\x2B\x2D\x2F-\x39\x3D\x3F\x5E-\x7E]+)|(?:\x22(?:[\x01-\x08\x0B\x0C\x0E-\x1F\x21\x23-\x5B\x5D-\x7F]|(?:\x5C[\x00-\x7F]))*\x22))(?:\.(??:[\x21\x23-\x27\x2A\x2B\x2D\x2F-\x39\x3D\x3F\x5E-\x7E]+)|(?:\x22(?:[\x01-\x08\x0B\x0C\x0E-\x1F\x21\x23-\x5B\x5D-\x7F]|(?:\x5C[\x00-\x7F]))*\x22)))*@(??:(?!.*[^.]{64,})(??:(?:xn--)?[a-z0-9]+(?:-[a-z0-9]+)*\.){1,126}){1,}(??:[a-z][a-z0-9]*)|(??:xn--)[a-z0-9]+))(?:-[a-z0-9]+)*)|(?:\[(??:IPv6:(??:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){7})|(??!(?:.*[a-f0-9][:\]]){7,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?:?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?)))|(??:IPv6:(??:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){5}|(??!(?:.*[a-f0-9]{5,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3})?:?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3}?)))?(??:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))(?:\.(??:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))){3}))\]))$/";
        return preg_match($pattern,$email)
    }  

[AyKay47]

Every language has a different flavor of regex. Things that are valid in one might be invalid in another.

 

For your reading: http://www.regular-expressions.info/refflavors.html

[greentrancer]

i believe you, but this regex it's the one which filter_var() is using and it's for php. have a look here: http://fightingforalostcause.net/misc/2006/compare-email-regex.php thank you.