PHP

?Define (' Abc_critical ', 0);Define (' Abc_error ', 1);Define (' Abc_alert ', 2);Define (' Abc_warning ', 3);Define (' Abc_notice ', 4);Define (' Abc_info ', 5);Define (' Abc_debug ', 6);Define (' Abc_trace ', 7);Define (' Abc_var_dump ', 8);Define

If ... Else statement Use the If....else statement if you want to execute some code when a condition is set up and execute some other code when the condition is not valid. Grammar The code is as follows Copy Code if

PHP Tutorial pcre Regular Expression Complete tutorialPredefined constants Preg_pattern_order The results are sorted by "rules", only for Preg_match_all, i.e. $matches[0] is the result of a complete rule, $matches [1] is the result of the first

Today, using the Json_encode function, we find that Chinese has become null. Reason analysis: Use the Json_encode function should use the UTF-8 encoding, my page is GBK. Workaround: Use the Iconv (' gbk ', ' UTF8 ') function before the Json_encode

Due to the historical reasons for the Internet, Apin is responsible for the overall network IP planning as well as the North American region also has some of Africa's IP allocation management, and accordingly, whois.apin.net is the IP whois root

Quick start of regular Expressions (ii) "Guided reading" in this article, we mainly introduce subpatterns, reverse reference (back references) and quantifiers (quantifiers) In the previous article, we introduced the pattern modifiers and

Introduced A checkbox is a very useful page table item that allows a user to select all items or not one, even if they have multiple selections. However, although this is a very good form element, there are always some confusing situations in our

1,Do the site generally encounter the problem of dealing with classification, I have to post several examples of processing infinite classification The structure of the database is simple: ID, fatcher_id, name, ... This design is short and short,

Nginx and Apache are not the same, in Apache can directly specify the error log php, so that in the PHP implementation of the error message directly into the PHP error log, you can easily query. In Nginx, things have become like this: Nginx only

Now playing micro Bo more and more people, and on the microblogging of Third-party application development is more and more, oneself in the occasional contact with Sina Weibo API development, Sina micro-blog API development Resources More, Sina

Why use multiple submit tasks? Before I answer this question, let me answer the obvious question: since many forms are more suitable for a single submit button, why do people sometimes need two (or more) of submit buttons? The best way to explain

OpCode is a part of the computer instruction that specifies the action to be performed, and the format and specification of the instruction is specified by the processor's instruction specification. In addition to the instruction itself, there is

PHP itself is not timed function, PHP can not be multi-threaded. PHP's timing tasks must be combined with other tools to achieve, such as WordPress built-in Wp-cron features, very powerful. First, the Linux server using crontab timed to execute PHP

Use of their own small PHP application, using Curl to grasp the page down processing, in order to wear the wall convenient, using Privoxy as a proxy, easy to choose which sites to use proxy, which do not. But today encountered a strange problem,

Enables any executable program that supports standard IO (stdin, stdout) to be a mapper or reducer of Hadoop. For example: Copy Code code as follows: Hadoop jar Hadoop-streaming.jar-input Some_input_dir_or_file-output

Talking about PHP security protection-Web attacks and security protection web SQL Injection attacks) Attackers can insert SQL commands into the input field of Web forms or the string requested by the page to trick the server into executing malicious

Xml functions are the core component of php. These functions can be used without installation.Php xml parser functionPhp: indicates the earliest php version that supports this function.Function description phpUtf8_decode () decodes UTF-8 strings

The SS/ATOM format is easy to generate. The trouble is that the date format is generated (RSS => pubDate, ATOM => created ).We found that PHP Date provides the required global variables: (PHP 5.1.1 will support these global variables later)Echo DATE_

With the development of Internet, web applications are becoming more and more popular in people's lives. some netizens will post some articles that contain some uncivilized words and pictures. Now, the country advocates civilized networks and