php email邮箱正则

1.验证email： < ?php 　　 if (ereg(/^[a-z]([a-z0-9]*[-_\.]?[a-z0-9]+)*@([a-z0-9]*[-_]?[a-z0-9]+)+[\.][a-z]{2,3}([\.][a-z]{2})?$/i; ,$email)){ echo “Your email address is correct!”;} 　　 else{ echo Please try again!; } ?> 或 $str = ''; $isMatched = preg_match('/^\w[-\w.+]*@([A-Za-z0-9][-A-Za-z0-9]+\