PHP

1. You can directly use the PHP built-in function array_intersect () Array array_intersect (array $ array1, array $ array2 [, array $...]) Array_intersect () returns an array containing all values that appear in the array of all other parameters at

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). " ";

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

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_

Copy codeThe Code is as follows: $ a = array (1, 2 ); $ B = array (11, 12 ); Foreach ($ a as & $ r ){ } Foreach ($ B as $ r ){ } Echo $ a [1]; // OUTPUT 12 The intention of the two loops may be: the first loop needs to modify the element

1. When a user accesses the SERVER, use the PHP super global variable $ _ SERVER array field ['HTTP _ USER_AGENT '] To obtain all information of the user $ _ SERVER ['HTTP _ USER_AGENT '] string during my access: Mozilla/5.0 (Windows; U; Windows NT 6

Copy codeThe Code is as follows: /* * Created on 2010-10-27 * BY QQ542900563 * Copyrights Reserved 2000-2020 * This example shows how to generate an image watermark. */ // Load two images respectively $ Im = imagecreatefromjpeg ("liu.jpg ");

Copy codeThe Code is as follows: // The session set on the login page. When the session contains the name // Session_start (); // $ Name = $ _ SESSION ['name']; // If (empty ($ name )){ // Header ("Location: error. php "); // Exit (); //} // Process-

The following is a code written in php to obtain crawling records of search spider. The following search engines are supported: Record the crawling websites of Baidu, Google, Bing, Yahoo, Soso, Sogou, and Yodao! The php code is as follows: Copy

So love micro-network now explains php built-in functions Case-sensitive conversion functions Text html Tag processing function Case-sensitive functionsCopy codeThe Code is as follows: strtolower ()Strtoupper ()Ucfirst ()Ucword () String formatting

1. Usage of ++ I (using a = ++ I, I = 2 as an example) Add the I value to 1 (that is, I = I + 1) and then assign it to variable a (that is, a = I ), The final a value is 3, and the I value is 3. So a = ++ I is equivalent to I = I + 1, a = I 2.