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Every time I ask for such a question is quite embarrassed ... But it's often too late to find a way to check the manual. Had to reach out again. The problem is this. Make a regular query, in reverse order by field a. But want to get the maximum value of field B in this query PHP does not seem to provide a function to get the maximum key value of a multidimensional array directly. To write their own sort

: about the testing processI would like to know how the software development process is very specific module testing and the overall test is how to establish a link, this is what I do not understand now, is not to say that the answer to the question now. I would like to follow the next study in depth, I will be in the specific project to carefully understand the actual work.Question four: about the teamThrough the course study, we know that the concep

Ask a syntax problem in the source code of the gcc-4.3.2-Linux general technology-Linux programming and kernel information, the following is detailed reading. Ask a syntax question in gcc-4.3.2 source code I don't know what it means to get a line (00046) About _ iobuf in the source code of gcc-4.3.2.tar.bz2 today. The details are as follows: \ Gcc-4.3.2 \ gcc \

Ask another question about the PHP array format. Thanks for answering the previous array question xuzuning. I want to ask another question. can I do this if I put the type value in the table into the array? Use the above table to implement the following array A

I would like to ask you a basic question about php. PHPcode $ conn = mysql_connect ( quot; localhost quot;, quot; root quot;, quot; 123456 quot;); if (! $ Conn) {die ('couldnotconnect: '. mysql _ php: I 'd like to ask you a basic question. PHP code $ Conn = mysql_connect ("localhost", "root", "123456"); if

Ask the experts a question about smarty and ask them a question about smarty. $ arr [] array ( quot; tid quot; gt; $ row [tid], quot; subject quot; gt; $ row [subject], quot; dateline quot; gt; date ( quot; Y-m-dH: I: s quot;, $ ro ask the experts a

Could you tell me a question about game development? which of the following technologies can be used to develop shooting online games? thank you! Online game development shared: ask a question about game development Which of the following technologies can be used to develop shooting online games? thank you! Online game development Share: ------ Solution

Ask a weak question about the kernel! -- Linux general technology-Linux programming and kernel information. The following is a detailed description. I am a beginner and have little knowledge about Linux kernel. Mentioned in many books You must first prepare a kernel source code tree, construct a new kernel, and install it in your system.. I am not very familiar with the above: First, you can download th

I would like to ask a question about Kernel configuration USB-general Linux technology-Linux programming and kernel information. The following is a detailed description. My Development Board is Omap5912 (TI arm9-+ DSP), and the embedded system uses the free MontaVista linux. There is a serial port and a USB port on the board. During kernel compilation, the USB port is compiled into the kernel (some of the m

Ask a FLOAT question $ usec: number of current microseconds, $ sec: current number of seconds list ($ usec, $ sec) explode (, microtime (); $ time1 (float) $ usec + (float) $ sec; list ($ usec, $ sec) explode (, microtime (ask a FLOAT question) // $ Usec: number of current microseconds, $ sec: current number of seconds

Ask a question about mysql and groupby grouping query. the data table field is of the datetime type, the saved value is 2009-02-10:20:11. I want to write an SQL statement for querying by number of days, that is, the number of records on the current day is two records, with the dates 2009-02-, respectively, 2009-02-the results show that the number of friends I know in is 2. I would like to thank you first-

I would like to ask you a question about gbk and gb2312. why don't we start from 81 and simply use high bytes? Why does the first and second bytes of gb2312 start from a1? And the second byte of gbk starts from 40? Isn't it enough? Why not start from 01? ------ Solution -------------------- c1controls: why not use high bytes directly instead of 81? Why does gb23 ask