<?php     $dbconn = pg_connect("dbname=publisher") or die ("Impossible de se connecter");     $res = pg_query($dbconn, "select * from authors where author = 'Orwell'");     if ($res) {         if (pg_field_is_null($res, 0, "annee") == 1) {             echo "La valeur du champ \"annee\" est null.\n";         }         if (pg_field_is_null($res, 0, "year") == 0) {             echo "La valeur du champ \"annee\" n'est pas null.\n";       }    } ?>
 
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