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SQLite Tutorial in PHP

 
SQLite Tutorial in PHP
SQLite is an SQL database manager used locally or on a website, and compatible
in particularly with PHP.
Summary
Installing SQLite and creating a database
.
Installing SQLite. Verifying the installation by creating a base.
Creating and using a SQLite table
.
Creating a table. Deleting a table. Adding a record. Reading a record.
How to find and update a post
.
Filling a database. Dump of the whole base. Finding a record by ID. Searching a post. Updating a post.
Download
The complete source code of the scripts
in a ZIP archive.
More
SQLite and multi-users. How to treat concurrency issue with SQLite
.


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PHP学习笔记

1.直接使用mysql_insert_id()获取上一次插入的数据的AUTO_INCREMENT的变量的编号,比使用mysql语句获取方便极多。但注意要在query()后立刻使用,保证时间正确性,如多线程访问数据库是产生误差。
2.等号左右各留一空格,清晰便于阅读。
3.PHP中,单双引号均可以套string,区别在于:
"this is a simple $test" = 'this i ......

[PHP] 从 json_encode 到 ajax_encode

PHP 5.2 及以上版本提供了 json_encode 和 json_decode 函数,相当好用。
而之前的版本则需要下载网友们自行开发的库(有兴趣的可以看下 http://code.itlearner.com/php/JSON-class.html )
可以参考如下这个方法来在低版本上扩充这两个函数:
if (!function_exists('json_encode') && !function_exists('j ......

PHP

<?php
// open database connection
@ $db = new mysqli($host, $user, $password, $database_name);
if (mysql_connect_error())
{
echo '';
exit;
}
// query
$result = $db->query($sql);
$num_results = $db->num_rows;
// data
$row = $result->fetch_assoc(); // row is array, $row['id' ......

多键值cookie(php中cookie存取数组)

cookie默认不能存数组,所以下面的写法是错误的。
 
<?php
$arr = array(1,2,3);
setcookie('a',$arr);
$arr = array(1,2,3);
setcookie('a',$arr);
?>
报错如下:
Warning: setcookie() expects parameter 2 to be string, array given in
但是PHP可以把同名且后面以[]结尾的cookie解析为数组。在 ......
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