php - MySQL PDO WHERE = $variable -

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i have php function want data database calling get_database_data()

in function have 2 variables should used in where $variable1 = $variable2.

i know use "where ".$variable1." = ".$variable2. it's works $variable2, not $variable1.

something else use, or how make work?

edit:

there no errors, row don't rows returned

edit2:

i've got work, using: "where $variable1 = ".$variable2

you should use prepared statements.

here snippet can used form function can return data need. should able modify quite needs.

   function get_database_data($variable1,$variable2)    {         $dbh = new pdo("mysql:host=url;dbname=somedb", "user", "pass");         $sqlupdate = "select * sometable {$variable1} = :variable2";         $sthupdate = $dbh->prepare($sqlupdate);         $sthupdate->bindparam(':variable2', $variable2, pdo::param_str, 12);         $sthupdate->execute();         $result = $sthupdate->fetchall(pdo::fetch_assoc);         return $result;     }        print_r(get_database_data('fieldname','value'));

i found question quite interesting , suggest give read also:

can use pdo prepared statement bind identifier (a table or field name) or syntax keyword?


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