大约有 7,000 项符合查询结果(耗时:0.0248秒) [XML]
PDO Prepared Inserts multiple rows in single query
I am currently using this type of SQL on MySQL to insert multiple rows of values in one single query:
22 Answers
...
TCP 的那些事儿(下) - 更多技术 - 清泛网 - 专注C/C++及内核技术
...情况太糟糕,反应也很强烈。
sshthresh = cwnd /2
cwnd 重置为 1
进入慢启动过程
2)Fast Retransmit算法,也就是在收到3个duplicate ACK时就开启重传,而不用等到RTO超时。
TCP Tahoe的实现和RTO超时一样。
TCP Reno的...
中文网(自研/维护)拓展 · App Inventor 2 中文网
...果是则返回’真’,否则返回’假’。
ResetFirstRun()
重置App的运行状态为第一次运行。
SystemSettings()
跳转到系统设置界面
WirelessSettings()
跳转到无线和网络设置界面
AirPlaneState
Component for AirPlaneState
...
How to set HTTP header to UTF-8 using PHP which is valid in W3C validator?
... change a series of things.
Database (immediately after the connection):
mysql_query("SET NAMES utf8");
// Meta tag HTML (probably it's already set):
meta charset="utf-8"
header php (before any output of the HTML):
header('Content-Type: text/html; charset=utf-8')
table-rows-charset (for each row...
How do I use regex in a SQLite query?
...A SQLite UDF in PHP/PDO for the REGEXP keyword that mimics the behavior in MySQL:
$pdo->sqliteCreateFunction('regexp',
function ($pattern, $data, $delimiter = '~', $modifiers = 'isuS')
{
if (isset($pattern, $data) === true)
{
return (preg_match(sprintf('%1$s%...
What datatype to use when storing latitude and longitude data in SQL databases? [duplicate]
...what suggested here using the following conversion algorithm:
as a stored mysql function:
CREATE DEFINER=`r`@`l` FUNCTION `PositionSmallToFloat`(s INT)
RETURNS decimal(10,7)
DETERMINISTIC
RETURN if( ((s > 0) && (s >> 31)) , (-(0x7FFFFFFF -
(s & 0x7FFFFFFF))) / 600000, s / 60...
Storing images in SQL Server?
...that indeed many see saving images to disk better for larger images, while mySQL allows for easier access, specially from languages like PHP.
I found a similar question
MySQL BLOB vs File for Storing Small PNG Images?
My final verdict was that for things such as a profile picture, just a small s...
Why would json_encode return an empty string
...is problem was setting charset=utf8 in my PDO connection.
$dbo = new PDO('mysql:host=localhost;dbname=yourdb;charset=utf8', $username, $password);
share
|
improve this answer
|
...
苦逼的年轻人和年薪百万的区别到底在哪里? - 杂谈 - 清泛网 - 专注C/C++及内核技术
...进录取率极低的计算机科学学院,学弟学妹组队求经验,如何管住自己刻苦学习,他说不出来,我教他,“你当时一天自习七小时,为保证自己避过食堂高峰期,六点前吃饱入座,带一袋牛肉干,防止后期因为饥饿影响效率,是...
MFC RadioButton用法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...;
DDX_Control(pDX, IDC_RADIO9, m_RBtGroup4);
}
问题一:如何更改RadioButton默认值???
方法1
在定义控件变量时,默认变量初值为-1,表示此组的任何RadioButton均不被选中,如果需要改变初始默认按钮的设置情况,只需要在...
