SQLite
- 简介
- 安装／配置
- 需求
- 安装
- 运行时配置
- 资源类型
- 预定义常量
- SQLite 函数
- sqlite_array_query — Execute a query against a given database and returns an array
- sqlite_busy_timeout — Set busy timeout duration, or disable busy handlers
- sqlite_changes — Returns the number of rows that were changed by the most recent SQL statement
- sqlite_close — Closes an open SQLite database
- sqlite_column — Fetches a column from the current row of a result set
- sqlite_create_aggregate — Register an aggregating UDF for use in SQL statements
- sqlite_create_function — Registers a "regular" User Defined Function for use in SQL statements
- sqlite_current — Fetches the current row from a result set as an array
- sqlite_error_string — Returns the textual description of an error code
- sqlite_escape_string — Escapes a string for use as a query parameter
- sqlite_exec — Executes a result-less query against a given database
- sqlite_factory — Opens an SQLite database and returns an SQLiteDatabase object
- sqlite_fetch_all — Fetches all rows from a result set as an array of arrays
- sqlite_fetch_array — Fetches the next row from a result set as an array
- sqlite_fetch_column_types — Return an array of column types from a particular table
- sqlite_fetch_object — Fetches the next row from a result set as an object
- sqlite_fetch_single — Fetches the first column of a result set as a string
- sqlite_fetch_string — 别名 sqlite_fetch_single
- sqlite_field_name — Returns the name of a particular field
- sqlite_has_more — Finds whether or not more rows are available
- sqlite_has_prev — Returns whether or not a previous row is available
- sqlite_key — Returns the current row index
- sqlite_last_error — Returns the error code of the last error for a database
- sqlite_last_insert_rowid — Returns the rowid of the most recently inserted row
- sqlite_libencoding — Returns the encoding of the linked SQLite library
- sqlite_libversion — Returns the version of the linked SQLite library
- sqlite_next — Seek to the next row number
- sqlite_num_fields — Returns the number of fields in a result set
- sqlite_num_rows — Returns the number of rows in a buffered result set
- sqlite_open — Opens an SQLite database and create the database if it does not exist
- sqlite_popen — Opens a persistent handle to an SQLite database and create the database if it does not exist
- sqlite_prev — Seek to the previous row number of a result set
- sqlite_query — Executes a query against a given database and returns a result handle
- sqlite_rewind — Seek to the first row number
- sqlite_seek — Seek to a particular row number of a buffered result set
- sqlite_single_query — Executes a query and returns either an array for one single column or the value of the first row
- sqlite_udf_decode_binary — Decode binary data passed as parameters to an UDF
- sqlite_udf_encode_binary — Encode binary data before returning it from an UDF
- sqlite_unbuffered_query — Execute a query that does not prefetch and buffer all data
- sqlite_valid — Returns whether more rows are available
用户评论:
[#1] nosdudefr at gmail dot com [2011-05-06 03:34:07]
Regarding the table creation you can optimize this code a bit by using the built in " CREATE TABLE IF NOT EXISTS <tablename>". This will let the table creation decision to the sqlite engine.
Then, if i may, your code could be something like :
<?php
if ($db = new SQLiteDatabase('filename')) {
// first let the engine check table, and create it eventualy
$q = @$db->query('CREATE TABLE IF NOT EXISTS tablename (id int, requests int, PRIMARY KEY (id))';
//the rest of the code, according error checks etc
// ...
?>
For more "tweaks" feel free to look at sqlite language ref : http://www.sqlite.org/lang_createtable.html
Have fun with this powerfull&simple engine :)
[#2] Anonymous [2010-07-24 16:12:38]
As of July 2010, there are two ways to use SQLite from PHP:
- procedural: sqlite (=sqlite2), sqlite3
- object-oriented: SQLite3, PDO
[#3] Andrew Paul Dickey [2009-06-11 21:43:48]
If you intend to implement 2.x releases of SQLite with your development you are in the right place, as this library is suitable for use with your application (reference http://us.php.net/manual/en/book.sqlite.php).
If you intend to use SQLite 3.x releases of SQLite with your development please refer to the section on PHP Data Objects, and specifically the PDO-SQLite implementation available at(references: http://us.php.net/manual/en/book.pdo.php , http://au2.php.net/manual/en/ref.pdo-sqlite.php).
It is my hope that this post will save both new users and experienced developers time during their initial or a new implementation of PHP & SQLite by encouraging them to use the appropriate libraries.
[#4] saivert at saivert dot com [2008-04-30 00:02:30]
How to open a database, create a table if it doesn't exist and inserting initial value.
<?php
if ($db = new SQLiteDatabase('filename')) {
$q = @$db->query('SELECT requests FROM tablename WHERE id = 1');
if ($q === false) {
$db->queryExec('CREATE TABLE tablename (id int, requests int, PRIMARY KEY (id)); INSERT INTO tablename VALUES (1,1)');
$hits = 1;
} else {
$result = $q->fetchSingle();
$hits = $result+1;
}
$db->queryExec("UPDATE tablename SET requests = '$hits' WHERE id = 1");
} else {
die($err);
}
?>
Use this as boilerplate code for any new project using SQLite.