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Последние активные темы форума |
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mysqli_num_fields
(PHP 5) mysqli_num_fields (no version information, might be only in CVS) result->field_count --
Get the number of fields in a result
DescriptionПроцедурный стиль: int mysqli_num_fields ( mysqli_result result ) Объектно-ориентированный стиль (property): class mysqli_result { int field_count } mysqli_num_fields() returns the number of fields from specified result set.
Возвращаемые значенияThe number of fields from a result set
Примеры
Пример 1. Объектно-ориентированный стиль
<?php
$mysqli
= new
mysqli
(
"localhost"
,
"my_user"
,
"my_password"
,
"world"
);
/* check connection */
if (
mysqli_connect_errno
()) {
printf
(
"Connect failed: %s\n"
,
mysqli_connect_error
());
exit();
}
if (
$result
=
$mysqli
->
query
(
"SELECT * FROM City ORDER BY ID LIMIT 1"
)) {
/* determine number of fields in result set */
$field_cnt
=
$result
->
field_count
;
printf
(
"Result set has %d fields.\n"
,
$field_cnt
);
/* close result set */
$result
->
close
();
}
/* close connection */
$mysqli
->
close
();
?>
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Пример 2. Процедурный стиль
<?php
$link
=
mysqli_connect
(
"localhost"
,
"my_user"
,
"my_password"
,
"world"
);
/* check connection */
if (
mysqli_connect_errno
()) {
printf
(
"Connect failed: %s\n"
,
mysqli_connect_error
());
exit();
}
if (
$result
=
mysqli_query
(
$link
,
"SELECT * FROM City ORDER BY ID LIMIT 1"
)) {
/* determine number of fields in result set */
$field_cnt
=
mysqli_num_fields
(
$result
);
printf
(
"Result set has %d fields.\n"
,
$field_cnt
);
/* close result set */
mysqli_free_result
(
$result
);
}
/* close connection */
mysqli_close
(
$link
);
?>
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Результат выполнения данного примера:
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