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Transferred from: http://blog.csdn.net/phpwish/article/details/7845921Look at the database structure design of the project today and find a strange place.' Xxx_detail ' delflag ' int (1) not NULL DEFAULT ' 0 ' COMMENT ' Remove flag ',' Xxx_category '

Explanation of length value problem for MySQL int typeChase _something My friend seaside ask me MySQL what is the length of int type when building a table? Is this column allowed to store the maximum width of a value? Why I set it to int (1), also

Http://www.cnblogs.com/xiaochaohuashengmi/archive/2011/08/25/2153016.htmlWhat is the difference between MySQL int (1) tinyint (1)?I have specified the field length, does the type still make sense? The reply:mysql in int (1) and tinyint (1) only

From:http://www.cnblogs.com/xiaochaohuashengmi/archive/2011/08/25/2153016.htmlWhat is the difference between MySQL int (1) tinyint (1)?I have specified the field length, does the type still make sense? The reply:mysql in int (1) and tinyint (1) only

Explanation of length value problem for MySQL int typeChase _something My friend seaside ask me MySQL what is the length of int type when building a table? Is this column allowed to store the maximum width of a value? Why I set it to int (1), also

int[(M)] [UNSIGNED] [Zerofill]An integer of normal size. The signed range is 2147483648 to 2147483647. The unsigned range is 0 to 4294967295.Int (1) and int (10) have no difference in themselves, but with the (M) value, there will be a display width

For two positive integers x and N, the total number of integers Q, R makesX = NQ + R, where 0 Q and R are uniquely identified. Q = [x/n], r = x-N [x/n]. This is a simple form with remainder division. In C, Q and R are easy to calculate: q = x/N, r =

PHP uses the backtracking algorithm to solve the n queen problem. This article describes how PHP solves the n queen problem based on the backtracking algorithm. We will share this with you for your reference. The details are as follows: I will not

In the mysql field definition, x in INT (x) only indicates the display width. The optional display width rule is used to fill up the width from the left when the display width is less than the specified column width value. The display width does not

{Code...} should theoretically return: {code...} Actually returns: {code...}. Isn't this a bug? Update: this is not a bug, but it is clear when the number key is not merge in the manual. $adiff = json_decode('{"28":0,"29":0,"30":0,"31":0,"32":0,"33":

$adiff = json_decode('{"28":0,"29":0,"30":0,"31":0,"32":0,"33":0,"34":0,"35":0}',true);$diff = json_decode('{"28":1,"29":1,"30":1,"31":1,"32":1,"33":1,"34":1,"35":1}',true);$adiff = array_merge_recursive($diff,$adiff);var_dump($adiff); Theoretically

This is an example program that uses variable function parameters, as shown below:# Include # Include # Include // # Include Typedef char * va_list; // # DEFINE _ intsizeof (N) (sizeof (n) + sizeof (INT)-1 )&~ (Sizeof (INT)-1 ))// #

You can also view it through VLD. For more information, see my blog. csdn. net21aspnetarticledetails7002644 install parsekit extension pecl. php. netpackageparsekit download the latest # wgetpecl. php. netgetparsekit-1.3.0.tgz installation process

Security is the most important issue facing the online website. There is no absolute security, only constant attack and defense confrontation. Do not believe that the user submitted data is the first purpose, this article to use a weak type and

In computer science, callstack refers to the stack that stores information about the running functions of a program. A call stack is composed of stack frames. Each stack frame corresponds to an unfinished function. In today's popular computer system

Thinkphp Template display problems I want to output the data for one month on the template page (the data for this month is a two-dimensional array, and the daily data is a one-dimensional array ), however, there is no data in some days. on the

Php array function Learning Record 1. the returned string key names are all lowercase or uppercase arrays. Array_change_key_case Usage: array_change_key_case ($ input (array), CASE_UPPER | CASE_LOWER), where CASE_LOWER returns lower case (default),

I want to output one months of data in the template page (this one months of data when the two-dimensional array, the daily data composition of the one-dimensional array inside), but some days there is no data, I would like to judge on the template

What is opcode Perhaps you have tried to write dynamic content with C/s, although the development process is extremely cumbersome, but in order to achieve performance improvement, it may be worthwhile, they can compile dynamic content into binary

We know that PHP is an interpreted language, and dynamic content written with them relies on the corresponding interpreter program to run, and the interpreter program needs to parse the input script code and generate the intermediate code that can