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Ask a process question ~~~~~~~~~~ -- Linux general technology-Linux programming and kernel information. The following is a detailed description. I am eager to ask a question when I post for the first time. I can't figure it out for a long time ~~~~~ Int main () { Printf ("main % d \ n", getpid (); // print Statement

Novice ask: The question of the inverse reference of the regular expression Dear predecessors, Hello everyone! I'm a rookie, I have something to ask. I recently read in the "PHP", reading, in the regular expression of each sub-expression (with () contained), without adding any non-capturing metacharacters, is to follow from left to right, each sub-expression of

Ask HTML to PDF Chinese is a question mark solution Html2fpdf Simple HTML to PDF Chinese garbled I can't handle it, I changed it to Html2pdf. Vendor (' html2pdf.html2pdf '); $html 2pdf = new Html2pdf (' P ', ' A4 ', ' fr ', true, ' UTF-8 ', Array (30, 20, 25, 25)); $html 2pdf->parsingcss->fontset (' Dejavusans '); $html 2pdf->writehtml (" Come out, Big Brother.This is a test "); $html 2pdf->output ("Sampl

development of course, hope is to do the whole stack, but do not want to do not handle too high concurrency, in-depth database of the full stack, more is the hope to become an architecture (fantasy). Hope to go farther on the road of technology, but now the problem is to continue to study the three framework, the front-end deep for the individual after the reason to go farther good, or now the service side in-depth contact high concurrency or performance optimization is better.The road in front

I novice, in self-study CI 3.x, recently in the practice, encountered a question to ask: In particular, I want to do a video VOD, where the home page to display the last updated 10 movies (10 records), my idea is to write a controller C_main output view V_main, I would like to ask where the query operation of the database should be put to where? Whether the SEL

Novice, ask a question that PHP submits to this page The following piece of code, I would like to submit to this page to deal with, but not correct, how should I ask how to write it? Echo ' aaaa= '; if (Isset ($_post[' Add ')) { echo "BBBB"; } ?> ------Solution-------------------- Echo ' aaaa= '; if ($act = = ' act ') { $status =!empty ($_po

it with CSS? 9. How does JS reference variables in. CS? For example, a variable in. CS is string T_A = "123". How does JS define a variable to accept the value of T_A. 10. a js file contains the following content: document. write ('Something, the content here is long'); the page will output "something, the content here is very long" where the JS is referenced ", how can I dynamically specify the "something, the content here is very long" content to an HTML control. These questions are

Ask for help again ~~ It is also a question about shell scripts-general Linux technology-Linux technology and application information. The following is a detailed description. Suppose I want to use shell scripts to execute a command command_1, but it only needs root permission to execute it, But we all know that the password is required for switching to the root user. (Of course, some people say that using

Ask a question about the first Ubdate installation? -- Linux general technology-Linux technology and application information. For details, refer to the following section. I would like to ask experts in the field, can I choose not to install online when I first install Ubdate10.10? I don't know if I can select update after installation? After the system is install

Ask a kdevelop question-Linux general technology-Linux programming and kernel information. The following is a detailed description. I just installed fedora 11 a few days ago, but I didn't choose to install kedevelop at the time. I used yum yesterday to install kdevelop, however, when we use it to create a new project and think of creating a simple hello world project, it is compiled to the end and stuck in

Ask a mysql question. I am very embarrassed to obtain the maximum value of a field in the query result (sorted by other fields... however, it is often too late to go to the manual to find a solution... I had to extend my hand... This is the problem. perform a regular query and sort by field a in reverse order. However, you want to obtain the maximum value of field B in this query. Php does not seem to

Ask a question about PHP assignment judgment Just contact PHP, in a MySQL class to see such a sentence $condition = $condition? ' WHERE '. $condition: NULL Not too clear what meaning, ask you can explain. I personally interpret him as: "where". $condition is empty, then the ' where '. $condition assigned to $condition, on the contrary, the $condition= $condition,

Ask for a basic mysql question. (in PHP) copy a record with id a to the same table and generate a new record. in this process, modify the values of some fields. how can this problem be written? This is the case: when a user copies a published item and then releases it, only the content that may be modified is submitted, other content is directly obtained from the database based on the copied record id.

Ask a newbie (only a few lines of code) lt ;? Php $ count $ _ COOKIE [nam]; $ count ++; setcookie ( quot; nam quot;, $ count, time () + 300); echo quot; welcome! Lt; br gt; you are the $ count visitor to this site quot; ask a newbie question (only a few lines of code) $ Count = $ _ COOKIE [nam]; $ Count ++; Setcookie ("nam", $ count, time () + 300 ); Echo

I am sorry to ask a closed Post question. I have read too many introductions about wordpress on the official website, and I am confused about the database structure. I want to find out how each wordpress webpage is associated. for example, what pages are nested on each page? what does each page do? who has such materials? Send me a copy of your email address. s: Ask