sqlite_unbuffered_query

SQLiteDatabase::unbufferedQuery

(PHP 5 < 5.4.0, PECL sqlite >= 1.0.0)

sqlite_unbuffered_query -- SQLiteDatabase::unbufferedQuery — Execute a query that does not prefetch and buffer all data

说锟斤拷

sqlite_unbuffered_query ( resource $dbhandle , string $query [, int $result_type = SQLITE_BOTH [, string &$error_msg ]] ) : resource
sqlite_unbuffered_query ( string $query , resource $dbhandle [, int $result_type = SQLITE_BOTH [, string &$error_msg ]] ) : resource

锟斤拷锟斤拷锟斤拷锟斤拷锟� (method):

public SQLiteDatabase::unbufferedQuery ( string $query [, int $result_type = SQLITE_BOTH [, string &$error_msg ]] ) : SQLiteUnbuffered

sqlite_unbuffered_query() is identical to sqlite_query() except that the result that is returned is a sequential forward-only result set that can only be used to read each row, one after the other.

This function is ideal for generating things such as HTML tables where you only need to process one row at a time and don't need to randomly access the row data.

Note:

Functions such as sqlite_seek(), sqlite_rewind(), sqlite_next(), sqlite_current(), and sqlite_num_rows() do not work on result handles returned from sqlite_unbuffered_query().

锟斤拷锟斤拷

dbhandle

The SQLite Database resource; returned from sqlite_open() when used procedurally. This parameter is not required when using the object-oriented method.

query

The query to be executed.

Data inside the query should be properly escaped.

result_type

锟斤拷选锟斤拷 result_type 锟斤拷锟斤拷锟斤拷锟杰筹拷锟斤拷锟斤拷锟揭撅拷锟斤拷锟斤拷锟截碉拷锟斤拷锟斤拷锟斤拷伪锟斤拷锟斤拷锟斤拷锟绞癸拷锟� SQLITE_ASSOC 锟斤拷锟斤拷锟斤拷毓锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷侄危锟斤拷锟斤拷锟� SQLITE_NUM 锟斤拷锟斤拷锟斤拷锟斤拷锟街碉拷锟斤拷锟斤拷锟�SQLITE_BOTH 锟斤拷同时锟斤拷锟截癸拷锟斤拷锟斤拷锟斤拷值锟斤拷锟斤拷锟斤拷SQLITE_BOTH 锟角此猴拷锟斤拷锟斤拷默锟斤拷值锟斤拷

error_msg

The specified variable will be filled if an error occurs. This is specially important because SQL syntax errors can't be fetched using the sqlite_last_error() function.

Note: 为锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟捷匡拷锟斤拷展(锟斤拷锟斤拷 MySQL)锟斤拷支锟斤拷锟斤拷锟街匡拷锟斤拷锟斤拷锟斤拷锓拷锟斤拷萍锟斤拷锟揭伙拷指锟绞斤拷锟斤拷锟斤拷锟斤拷牡锟揭伙拷锟斤拷锟斤拷锟斤拷锟�dbhandle锟斤拷

锟斤拷锟斤拷值

Returns a result handle 锟斤拷锟斤拷锟斤拷失锟斤拷时锟斤拷锟斤拷 FALSE.

sqlite_unbuffered_query() returns a sequential forward-only result set that can only be used to read each row, one after the other.

锟斤拷锟斤拷锟斤拷志

锟芥本 说锟斤拷
5.1.0 Added the error_msg parameter

锟轿硷拷

  • sqlite_query() - Executes a query against a given database and returns a result handle