PHP/String/Email Format
A regular expression for e-mail string checking
<source lang="html4strict">
<?php
$email = "l@b.ca";
echo preg_match("/^([a-zA-Z0-9])+([.a-zA-Z0-9_-])*@([a-zA-Z0-9_-])+.(.[a-zA-Z0-9_-]+)+[a-zA-Z0-9_-]$/",$email); //Would return 1 (true).
echo "
";
$bademail = "l.ca";
echo preg_match("/^([a-zA-Z0-9])+([.a-zA-Z0-9_-])*@([a-zA-Z0-9_-])+.(.[a-zA-Z0-9_-]+)+[a-zA-Z0-9_-]$/",$bademail); //Would return 0 (false).
?>
</source>
Use regular to check email address
<source lang="html4strict">
<?php
$regex = "/^[\w\d!#$%&"*+-\/=?^"{|}~]+(\.[\w\d!#$%&"*+-\/=?^"{|}~]+)*@([a-z\d][-a-z\d]*[a-z\d]\.)+[a-z][-a-z\d]*[a-z]$/"; $values = array( "user@example.ru", // Valid "u2@example.ru", // Valid ); foreach ($values as $value) { if (preg_match($regex, $value)) { printf("Found valid address: %s\n", $value); } else { printf("INVALID address: %s\n", $value); } }
?>
</source>
Validate email
<source lang="html4strict">
<?php
function validate_email($email) { $regexp = "^([_a-z0-9-]+)(\.[_a-z0-9-]+)*@([a-z0-9-]+)(\.[a-z0-9-]+)*(\.[a-z]{2,6})$"; if (eregi($regexp, $email)) return 1; else return 0; } if (isset($_POST["submit"])){ echo "Hi ".$_POST["name"]."!
"; if (validate_email($_POST["email"])) echo "The address ".$_POST["email"]." is valid!"; else echo "The address ".$_POST["email"]." is invalid!"; }
?> <form action="index.php" method="post">
Name:<input type="text" name="name" value="" /> Email Address:<input type="text" name="email" value="" /> <input type="submit" name = "submit" value="Go!" />
</form>
</source>