Transfers a result set from the last query

# 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

### Description

Object-oriented style

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

Procedural style

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.

### Parameters

`mysql`

  Procedural style only: A mysqli object returned by mysqli_connect() or 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)

### Return Values

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

> Note:

> 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.

### Errors/Exceptions

If mysqli error reporting is enabled (`MYSQLI_REPORT_ERROR`) and the requested operation fails, a warning is generated. If, in addition, the mode is set to `MYSQLI_REPORT_STRICT`, a mysqli_sql_exception is thrown instead.

### Changelog

Version | Description
--- | ---
8.4.0 | Passing the `mode` parameter is now deprecated. The parameter has had no effect as of PHP 8.1.0.

### Examples

See mysqli_multi_query().

### Notes

> Note:

> 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.

### See Also

- mysqli_real_query() - Execute an SQL query
- mysqli_use_result() - Initiate a result set retrieval

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