phpmyadmin-php Calling mysqli Query error

Phpphpmyadminmysqli

Statements run directly on the command line can be found to take, in the phpmyadmin inside can also be found, but written in the program is wrong, please God help to see.


The code is this

 $sql =" select * from $table_list where $length_left qq $length_right $textif $t;"; $mysqli = new mysqli("localhost","root","root",'qq_db');$mysqli->set_charset("utf8");if ($mysqli->connect_errno){  die("Connect Error :".$mysqli->connect_error);  }$result = $mysqli->query($sql);var_dump($result);$mysqli->close();sql语句实际输出的结果是select * from qq_list where length( qq = 5)  and qq like '%1%' and wuzheng;

prompt bool (false) after running

