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Последние активные темы форума |
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pg_field_is_null
(PHP 4 >= 4.2.0, PHP 5) pg_field_is_null -- Test if a field is NULL
Descriptionint pg_field_is_null ( resource result, int row, mixed field ) pg_field_is_null() tests if a field is NULL or
not. It returns 1 if the field in the given row is NULL. It
returns 0 if the field in the given row is NOT NULL. Field can
be specified as column index (number) or fieldname (string). Row
numbering starts at 0.
Пример 1. pg_field_is_null() example
<?php
$dbconn
=
pg_connect
(
"dbname=publisher"
) or die (
"Could not connect"
);
$res
=
pg_query
(
$dbconn
,
"select * from authors where author = 'Orwell'"
);
if (
$res
) {
if (
pg_field_is_null
(
$res
,
0
,
"year"
) ==
1
) {
echo
"The value of the field year is null.\n"
;
}
if (
pg_field_is_null
(
$res
,
0
,
"year"
) ==
0
) {
echo
"The value of the field year is not null.\n"
;
}
}
?>
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Замечание:
This function used to be called pg_fieldisnull().
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