$ Link = mysql_connect ("localhost" "root") in PHP; solution

In PHP, $ link = mysql_connect (& quot; localhost & quot;, & quot; root & quot;, & quot;); in the local system Apache2.2.22 + PHP5.3.9 + MySQL5.5, $ link = mysql_connect ("localhost", "root", "") in MyS PHP cannot be connected when PHP5.3.9 runs the following program ","");
In the local system Apache 2.2.22 + PHP5.3.9 + MySQL 5.5, PHP5.3.9 cannot connect to MySQL 5.5 when running the following programs
$ Link = mysql_connect ('localhost', 'root ','');

If ($ link) echo "connection successful ";
Else echo "connection failed ";
Mysql_close ();
?>
This method is used to verify whether MySQL is successfully installed,
Why display Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' on line 5
There should be no syntax errors ..

------ Solution --------------------
In the php root directory, copy all the names starting with lib and nt to the system32 directory.
Another is to change the ext path in the php. ini configuration file to the correct directory location of php.