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1. PEARµÄ°²×°, ÕâÀï½éÉÜÀûÓÃPHP5×Ô´øµÄBATÎļþ°²×°£¬ÐèÒªÄÜÉÏÍø¡£
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   b. °´ÕÕÌáʾÊäÈëһЩÉèÖÃÐÅÏ¢£¬Ö÷ÒªÊÇÒª°Ñ¾ÖÓòÍøµÄÍø¹Ø¼ÓÉÏ£¬Èçhttp://192.168.0.1:80/ , pearÒªÓÃÕâ¸öµØÖ··ÃÎÊInternet£¬ÈôÎÞ´úÀí·þÎñÆ÷ÔòÖ±½Ó»Ø³µ
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2. °²×°ÍêPEARºó, ÒÔÏÂʾÀý¾ßÌåµ÷ÓÃ: 
<?php
require_once 'DB.php';
//$dsn = 'sqlite:///E:/web2/Web_TY/sqlite/data/tydb.db?mode=0666';
$dsn = array(
'phptype' => 'mysql',
'username' => 'root',
'password' => '666666',
'hostspec' => 'localhost',
'database' => 'MyDbName'
);
$options = array(
'debug' => 2,
'portability' => DB_PORTABILITY_ALL
);
$db =& DB::connect($dsn, $options);
if (DB::isError($db)) {
die($db->getMessage());
}
$db->setFetchMode(DB_FETCHMODE_ASSOC);
$res =& $db->query('select * from counter');
if (DB::isError($res)) {
die($res->getMessage());
}
printf("ÐÐΪ£º%d,ÁÐΪ£º%d<br>", $res->numRows(), $res->numCols());
?>
3. pearʹÓÃÓöµ½µÄÎÊÌâ
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<?php
function foo($arg)
{
return $arg
}
?>
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<?php
function foo($arg = NULL)
{
return $arg == NULL ? "" : $arg;
}
?>
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¡¡¡¡PHP ÖУ¬Êý¾Ýͨ³£¶¼ÊÇ´æ´¢ÔÚMySQLÊý¾Ý¿âµ±Öеġ£µ«ÊÇÓÐЩʱºò£¬ÎÒÃÇ»¹ÊÇÐèҪʹÓÃPHP¶ÁдһЩ±¾µØÎļþ¡£±ÈÈçÉú³É¾²Ì¬Ò³Ãæ»òÕßÊý¾ÝµÄ±¾µØ»º´æ¡£
¡¡¡¡ÎÒÃÇÓÃÒ»¸ö¼òµ¥µÄ·ÃÎÊÈÕÖ¾À´ÑÝʾһÏÂfopen, fread, fwrite, fcloseµÄÓ÷¨¡£
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[PHP]PDOµÄʹÓÃ

1. °²×°php5.1ÒÔÉϵİ汾,ÓÐÖ§³Öpdo!ΪÁËʹÄãµÄ»·¾³ÄÜÌṩ¶ÔpdoµÄÖ§³Ö!ÔÚphp.iniÎļþ¼ÓÈëÒÔÏÂ:
extension=php_pdo.dll
extension=php_pdo_mysql.dll
extension=php_pdo_mssql.dll(Ö§³ÖmssqlÊý¾Ý¿â)
2. ÒÔÏÂΪPHÖÐPDOµÄ¾ßÌåʹÓÃ
 <?php
$dsn = 'mysql:dbname=MyDbName;host=localhost';
$user = 'root';
......
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