How to manipulate PDO in function

The code is as follows

Require (".. /inc/pdo.php "), function output ($action, $select, $name) {$select = $dbc->prepare (" Select Id,ztname,zttype,zttime, Headimg,riseimg from Naszt where 1=1 and Zttype=:zttype "); $select->bindvalue (": Zttype ", $action); $select Execute (); $result = ", while ($row = $select->fetch ()) {$result. = '
 
  

  
   
'; $result. = '; $result. = '; $result. = '
   
    

     
    ; $result. = '
    
     
Test 1
'; $result. = '
    
     
Test 12
   
    
'; $result. = '
'. $row [' Ztname ']. '
'; $result. = '. $row [' Zttype ']. '; $result. = '
1 Recommended Date: '. $row [' Zttime ']. '
';} return $result;}
 
  

 
  EXEC (' Set CHARACTER set UTF8 '); $dbc->setattribute (Pdo::attr_emulate_prepares, false); Disable prepared statements emulation}catch (Pdoexception $e) {echo $e->getmessage ();}? >

I want to call PDO in function
Do you want to inherit this class from the PDO in which you write class function?

Ask the great God to show how to write!

Reply to discussion (solution)

If not on the basis of global

Contains PDO class files, instantiates classes, and gives parameters.

Contains PDO class files, instantiates classes, and gives parameters.
OK, in addition I would like to ask you, PDO how to splice SQL Ah, such as where 1=1 and Tile=null no value is ignored

Recommend a look at this AH
http://php.xlxz.org/2013/11/370/

 Pdo_query (' show databases '); Var_dump ($sql, $db->dbversion ()); Exit $sql = $db->select (' i.kd K, io.id dk, iil.ii ds ')->from (' Test T ')->leftjoin (' Post P ', ' t.id =? ') , Array (2))->order (' name DESC, id ASC ')->where (Array (' Xin =? And do >? ' = = Array (1,3))->having (Array (' xin ' = ' dkls ')->group (' id ') Limit (3,4)->queryall (); Exit;//var_dump ($sql); $sql = $db->from (' Test ')->insert (' kd ' = ' 233 ', ' dkwe ' = 323);  $sql = $db->from (' Test ')->where (Array (' (DK =? and kd >?) or (DK =? and DDD =?) ' = = 2,3,5,4))->limit (2, 4)->update (Array (' dkddl ', ' = ' d ', ' kdls ' = ' dkdl ')); $sql = $db->from (' test,test ')->select (' Test,test ')->where (array (' id ' = = = Array (3,3,4, 2, 3))->limit (' 3 ', 3)->delete ();

Contains PDO class files, instantiates classes, and gives parameters.
OK, in addition I would like to ask you, PDO how to splice SQL Ah, such as where 1=1 and Tile=null no value is ignored

Where you can just spell a variable and assign a value when you need it.

As needed
$where = "where xxxx=xxx";
Otherwise
$where = "";


$SQL = "SELECT * from XXX $where";

