Browser error: PHPWarning: preg_match () expects.

Browser error: PHPWarning: preg_match () expects. PHP Warning: preg_match () expects parameter 2 to be string, object given in C: \ inetpub \ wwwroot \ hp \ 4.php on line 80

If (! $ This-> result |! Eregi ("^ Resource", $ this-> result) {return $ this-> output ("no data, please first execute the 'select' statement of SQL! ");}

If (! $ This-> result |! Preg_match ("/^ Resource/I", $ this-> result) {return $ this-> output ("no data, please execute the 'select' statement of SQL first! ");}

Since PHP has been upgraded from less than 5.2 to 5.6, all the mysql statements used have been changed to mysqli statements, and data cannot be read. I changed the statement as prompted by Baidu. Unfortunately, I still cannot use the error. how can I solve this problem now ????

Reply to discussion (solution)

$ This-> result is a resource, right?
Determine whether it is a resource application is_resource function
If (! $ This-> result |! Is_resource ($ this-> result ))

$ This-> result is a resource, right?
Determine whether it is a resource application is_resource function
If (! $ This-> result |! Is_resource ($ this-> result ))

$this -> result = @mysqli_query($this -> conn,$this -> sql);

This is the case.

Reply #1. I changed your is_resource function to solve the error. Unfortunately, I still cannot read the database.

Let's take a look at $ this-> result var_dump to see what it is.

Reply #4 var_dump ($ this-> result? Where to add