PHP

Krsort () Definition and usageThe krsort () function sorts the array by key in reverse order to reserve the original key for the array value. The second optional parameter contains an additional sorting flag. If yes, true is returned. Otherwise,

Background profile. php code: Copy codeThe Code is as follows: $ Arr = array ( 'Firstname' => iconv ('gb2312', 'utf-8', 'sincerity '), 'Lastname' => iconv ('gb2312', 'utf-8', 'Do not disturb '), 'Contact '=> array ( 'Email '=> 'fcwr @ jb51.net

Here we will talk about some features of this function through an experiment. Function prototypeBool spl_autoload_register ([callback $ autoload_function [, bool $ throw = true [, bool $ prepend = false]) Version compatibilityPHP 5> =

I. function prototype Int memory_get_usage ([bool $ real_usage = false]) 2. Version compatibility PHP 4> = 4.3.2, PHP 5 III. Basic usage and Examples1. Get the current memory consumptionCopy codeThe Code is as follows: Echo memory_get_usage ();$

Preface As the name suggests, the File Cache to memory cache is to convert the data stored in the file to the memory, so that disk operations can be converted to memory operations, which can greatly improve the data access speed, and distributed

The principle is to convert Chinese characters to hexadecimal notation and combine strings according to certain rules to implement character encoding and decoding, ensuring the integrity and compatibility of Characters During URL data transmission,

Method 1:$ Content = str_replace ("\ n", "", $ content ); Echo $ content; Method 2:Str_replace ("\ r \ n", "", $ str ); Method 3:$ Content = preg_replace ("/\ s/", "", $ content );Echo $ content; Appendix: First, let's talk about \ n, \ r, \ t\ N

Array_flip () Definition and usage The array_flip () function changes the key name of the array to the corresponding value, that is, the key name is changed to the value, and the value is changed to the key name. The array_flip () function returns

In fact, there is no technical content. Of course, you can directly paste the code, no nonsense, However, it is quite useful in development, such as Forum posts and collars. Copy codeThe Code is as follows: function tranTime ($ time ){ $ Rtime =

Copy codeThe Code is as follows: resumable upload of files Php code Sleep (2 ); $ FileTypes = array ('jpg ', 'png', 'gif', 'bmp '); $ Result = null; $ UploadDir = './upfiles '; $ MaxSize = 1 * pow (2, 20 ); If ($ _ SERVER

The problem is, in a certain situation to give: http://jb51.net? A = 1 This type of url address appending parameter changes to: http://jb51.net? A = 1 & B = 2 But how do you know that the same parameter name already exists, for example, in this

Copy codeThe Code is as follows: // $ Arr = array ('A' => 'abc', 'B' => 123, 'c' => true ); // B // $ Arr = range ('A', 'D '); // 1 For ($ I = 0; $ I Echo $ arr [$ I]. ','; Echo ' '; // 2 Foreach ($ arr as $ key) Echo "$ key ,"; Echo ' '; //

Method 1: Copy codeThe Code is as follows: $ text = 'array aabbccdd '; $ Text_filter = ''; $ Filter = array (); $ Len = mb_strlen ($ text, 'utf-8 '); For ($ I = 0; $ I $ Char = mb_substr ($ text, $ I, 1, 'utf-8 '); If (! Isset ($ filter [$ char]) { $

Next we will talk about how SQL injection attacks are implemented and how to prevent them. Let's look at this example:Copy codeThe Code is as follows: // supposed input$ Name = "ilia '; delete from users ;";Mysql_query ("SELECT * FROM users WHERE

Problem: PHP cannot load the php_curl.dll dynamic link library in IIS6 or IIS7. Solution: In the PHP manual, there are related instructions: php_curl.dll; CURL, client URL library function library; required: libeay32.dll, ssleay32.dll (included)

In this way, I I thought of inheritance to solve the problem. I have previously published a session class, which is much simpler. I set the user level through login, and the return of $ session-> get_status () If the value is 0, it indicates that

If you have a large array and all you need to do is find an existing given value, you can use in_array () to return true or false. The following code outputs "Not found in this array" because you will find an existing "Alber" in $ namesArray ". Copy

Simple PHP Functions Topic: simple PHP Functions Brief Introduction: PHP is simple and clear function syntax Suitable for: interested in open-source communities, php, and a little time to learn about php Note: I hope you can still give bricks. 1.

Below is the online Copy codeThe Code is as follows: class ArrayToXML { /** * The main function for converting to an XML document. * Pass in a multi dimen1_array and this recrusively loops through and builds up an XML document. * * @ Param array $

Copy codeThe Code is as follows: $ ss_log_level = 0; $ Ss_log_filename =/tmp/ss-log; $ Ss_log_levels = array (NONE => 0,ERROR => 1,INFO => 2,DEBUG => 3); // Set the Log LevelFunction ss_log_set_level ($ level = ERROR ){Global $ ss_log_level;$