PHP/Email/Email Address
Regular Expression validates an email adress
<source lang="html4strict">
<HTML> <BODY>
Regular Expression Tester
<FORM METHOD="POST" ACTION="RegularExpressionTester.php">
String:
<INPUT TYPE="TEXT" NAME="string">
Regular Expression:
<INPUT TYPE="TEXT" SIZE=64 NAME="pattern"
VALUE="^([_a-zA-Z0-9-]+)@([a-zA-Z0-9-]+(.[a-zA-Z0-9-]+)*)$">
<INPUT TYPE="SUBMIT">
</FORM>
</BODY>
</HTML>
</source>