PHP

CopyCode The Code is as follows: /* Chinese characters truncation of UTF-8 Program */ $ STR = "123 this is a test string "; $ Str1 = "()()"; Echo subutf8str ($ STR, 0, 3). " "; Echo subutf8str ($ STR, 0,4). " "; Echo subutf8str ($ str1, 0, 4). " ";

CopyCode The Code is as follows: // #### Splitting strings #### Function jb51netcut ($ start, $ end, $ file ){ $ Content = explode ($ start, $ file ); $ Content = explode ($ end, $ content [1]); Return $ content [0]; } ?> Explode definition and

I have read the source code of phpcms and discuz, so there may be a lack of innovation, but the principles are mostly the same, but the details may be slightly different. Let's start with the specific implementation process. 1. First, you need to

1> if ("false") is equivalent to if (true), because a non-null string is true. 2> check the data type: Is_array (); Is_object (); Is_string (); Is_null (); Is_integer (); 3> type hint (type hint) of the PHP5 introduced class, used to constrain the

UUID (Universally Unique Identifier) and GUID are all Unique identifiers in the whole time and space range. This is necessary in a distributed computing environment. however, if you only want to generate a "local unique identifier" in a limited

Generate the following XML string Xml Code Copy codeThe Code is as follows: title1 content1 2009-10-11 title2 content2 2009-11-11 Method I. [directly generate a string]Use pure PHP code to generate a string and write it into a

Briefly explain some code: First ~ (] +?> )~ Si This regular expression is matched. . Simply put, all are used. Second ~ ] *? /> ~ Si This regular expression is matched ...... />. Is a single closed tag, as shown in Third ~ ] *?> ~ Si This regular

Traffic Statistics Display Effect: Total Traffic: 399 Today's traffic: 14 Yesterday's traffic: 16 This code is only for learning and communication, and there must be something wrong with it. Sorry! -- -- Table structure 'mycounter' -- Copy codeThe

I installed CoreSeek System for Centos6.0 CoreSeek version: coreseek 3.2.14: Click to download PHP: PECL/Sphinx Extension: sphinx-1.2.0.tgz click to download. These software are all source code packages. We need to compile and install them. The

The following is an example: Copy codeThe Code is as follows: Echo memory_get_usage (), ''; // 313864 $ Tmp = str_repeat ('HTTP: // www.nowamagic.net/", 4000 ); Echo memory_get_usage (), ''; // 406048 Unset ($ tmp ); Echo memory_get_usage (); // 3139

If the method function is used incorrectly or is used less, if the logic sequence of several method functions is wrong, it may be a vulnerability and cannot be found easily. Tangle ~ Find out which senior person has come up with relevant conclusions

What problems will occur when I add them, and what errors will be reported if I do not add them. Therefore, when compiling PHP, many parameters are not added except the necessary directory settings ...... When I installed the web program, I found

The main function is to display the size of Beibei Based on Beibei's date of birth, and display Beibei's growth in real time. The current time is used to subtract the date of birth, but the age, months, and days are displayed. The daily algorithm

In particular, the + operator, which means that the array unit on the right (deduplication) is appended to the back of the array on the left. Copy codeThe Code is as follows: Echo "\ r \ n first case \ r \ n "; $ A = array (1, 2, 3, 4, 5, 6 ); $ B =

Obviously, file_exists is affected by asp, because asp not only has fileExists but also folderExists and driverExists. What does file_exists in PHP mean? File_exists = is_dir + is_file in PHP It can determine whether a file exists and whether a

Environment: PHP 5.2.14 CentOS 5.5 Step 1: Create an extension skeleton Cd php-5.2.14/ext./Ext_skel-extname = laiwenhui Step 2: Modify compilation Parameters Cd php-5.2.14/ext/laiwenhuiVi config. m4 Remove PHP_ARG_ENABLE (laiwenhui, whether to

Copy codeThe Code is as follows: /** * Mysqli class */ Class db_mysqli { Protected $ mysqli; Protected $ SQL; Protected $ rs; Protected $ query_num = 0; Protected $ fetch_mode = MYSQLI_ASSOC; Protected $ cache_dir = './cache /'; Protected $

Factory Model Single element mode Observer Mode Command Chain Mode Rule Mode Copy codeThe Code is as follows: class people { Private $ name = ''; Private $ user = null; Private function _ constract ($ name) {/* Here private defines the mode to

Reference is used in many computer languages and is a very powerful and practical feature. It has the implementation similar to the Pointer, but it has a different performance from the Pointer. For example, the reference of C ++ allows different

. Htgroup file example: Admin: user2 Editor: user1 user3 Writer: user3 Copy codeThe Code is as follows: class Htgroup { Private $ file = ''; Private function write ($ groups = array ()){ $ Str = ''; Foreach ($ groups as $ group => $ users ){ $ Users_