php正则判断大全

1.同时有数字和字母

$subject = 'qq2';
var_dump(preg_match('/^(?![0-9]+$)(?![a-zA-Z]+$)/', $subject));

2.只能有数字和字母

$subject = 'qq2';
var_dump(preg_match('/^(?![0-9]+$)(?![a-zA-Z]+$)[0-9a-zA-Z]+$/', $subject));