<?php $a = '中华人民'; $b = '人'; $qq = mb_strpos($a,$b,0,'utf8'); var_dump($qq); <?php echo password_hash("rasmuslerdorf", PASSWORD_DEFAULT); [root@localhost www.test.com]# cat password_verify.php <?php $a = '$2y$10$gOPZMSjUQh3HWgNh7PslueTIRZhgmpMfQ6ze9HprdjD0DSB1JCaBS'; if(password_verify('rasmuslerdorf',$a)){ echo 'ok'; }else{ echo 'error'; }