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mysqli::store_result

mysqli_store_result

(PHP 5, PHP 7, PHP 8)

mysqli::store_result -- mysqli_store_result — Transfers a result set from the last query

Опис

Об'єктно-орієнтований стиль

public mysqli::store_result(int $mode = 0): mysqli_result|false

Процедурний стиль

mysqli_store_result(mysqli $mysql, int $mode = 0): mysqli_result|false

Transfers the result set from the last query on the database connection represented by the mysql parameter to be used with the mysqli_data_seek() function.

Параметри

mysql

Тільки процедурний стиль: об'єкт mysqli, якого повертає функція mysqli_connect() або mysqli_init()

mode

The option that you want to set. As of PHP 8.1, this parameter has no effect. It can be one of the following values:
Valid options
Name Description
MYSQLI_STORE_RESULT_COPY_DATA Copy results from the internal mysqlnd buffer into the PHP variables fetched. By default, mysqlnd will use a reference logic to avoid copying and duplicating results held in memory. For certain result sets, for example, result sets with many small rows, the copy approach can reduce the overall memory usage because PHP variables holding results may be released earlier (available with mysqlnd only)

Значення, що повертаються

Returns a buffered result object or false if an error occurred.

Зауваження:

mysqli_store_result() returns false in case the query didn't return a result set (if the query was, for example an INSERT statement). This function also returns false if the reading of the result set failed. You can check if you have got an error by checking if mysqli_error() doesn't return an empty string, if mysqli_errno() returns a non zero value, or if mysqli_field_count() returns a non zero value. Also possible reason for this function returning false after successful call to mysqli_query() can be too large result set (memory for it cannot be allocated). If mysqli_field_count() returns a non-zero value, the statement should have produced a non-empty result set.

Помилки/виключення

Якщо увімкнені звіти про помилки mysqli (MYSQLI_REPORT_ERROR) і запитана операція не виконалась, буде виведено попередження, але якщо встановлено режим MYSQLI_REPORT_STRICT, буде викинуто виключення mysqli_sql_exception.

Журнал змін

Версія Опис
8.4.0 Passing the mode parameter is now deprecated. The parameter has had no effect as of PHP 8.1.0.

Приклади

See mysqli_multi_query().

Примітки

Зауваження:

Although it is always good practice to free the memory used by the result of a query using the mysqli_free_result() function, when transferring large result sets using the mysqli_store_result() this becomes particularly important.

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