PHP

By accident, Baidu knows that a student asked about the efficiency of count and strlen. well, I didn't fully understand this problem at the beginning and thought it was not two different things that could not be compared, after reading the reply

I haven't updated it for a long time. it's very busy. The following describes the operators and control structures of php; I. string insertion To provide developers with the maximum flexibility to process string values, PHP provides both literal

The implementation code for logging in php is mainly divided into several modes. For more information, see. The code is as follows: $ Ss_log_level = 0; $ Ss_log_filename =/tmp/ss-log; $ Ss_log_levels = array ( NONE => 0, ERROR => 1, INFO =>

PhpXPath can find and modify the implementation code of the XML file. For more information, see. The code is as follows: /* 11 Content1 2009-10-11 Title2 Content2 */ If (! Function_

Simple php writing to the database class code sharing, learning php friends can refer. I don't know how to write the original article into the essay. All right, the first blog. There are three types: 1. filter input (lightweight) Class

There are hundreds of files in a folder such as IDR_WEB_BKG_PNG, IDR_WEB_BKG_XML, IDR_WEB_BKG_ICO, and files. it is too troublesome to manually update the suffix one by one. the batch update code in PHP is as follows: The code is as follows: $

NuSoap is a WebService programming tool in the PHP environment. it is used to create or call WebService. It is an open source software, is fully written in PHP language, through HTTP to send and receive SOAP messages of a series of PHP class,

Use the PHP string regular expression replacement function preg_replace. For more information, see. 1. preg_replace () $ Msg = preg_replace ("/ And the middle part $ Msg = preg_replace ("/] +>/", "", $ msg); ----- delete <> and intermediate

The simple paging process and principle analysis of PHP mainly involves reading the database. if the database contains a large amount of content, we need to display it by page. Require '../inc/conn. php '; ?> // Initial parameter settings $

The 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. Krsort () definition and usageThe krsort () function sorts the array

Usually there are many sessions and few cookies are used. this is to solve Discuz! Cookie is not required for automatic synchronous login. Cookie As a result, the setcookie setting does not take effect and is not displayed on the browser. After

To facilitate input and reduce the number of text boxes that appear when the decoration and editing module is used, you need to enter two or three different content in one box, and then use some special characters to separate them, use explode to

PHPRPC is a lightweight, secure, cross-Internet, cross-language, cross-platform, cross-environment, cross-domain, support for transmission of complex objects, support for parameter reference, and support high-performance remote Ajax with content

In this article, I will introduce how to dynamically display the user's posted information on the page and play the user's posted information one by one. This effect can be applied to display system dynamics, product reviews, and other

The strtr function of PHP has a higher performance than the str_replace function. There are two forms to use strtr instead of str_replace: String strtr (string $ str, string $ from, string $) String strtr (string $ str, array $ replace_pairs)

Php provides detailed online time statistics for users. For more information, see. First, we will introduce the structure of the involved data table, with four fields: The code is as follows: The code is as follows: Uid : User ID Session_id

Php file cache function. For more information, see. The code is as follows: Function createHashDir ($ sign) { $ Md5 = md5 ($ sign ); If (! Is_dir (MB_CACHE) mkdir (MB_CACHE ); For ($ I = 1; $ I { $ Dir. = $ md5 {$ I }.'/'; If (! Is_dir (MB_CACHE. $

The iconv function library can convert character sets. it is an indispensable basic function library in php programming. 1. download the libiconv function library http://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.9.2.tar.gz; 2. decompress tar-zxvf

Some functions of the mysql module in php are simply encapsulated. many cms packages some mysql operation code classes. for details, refer. The code is as follows: Class mysql { Private $ db; // datebase connect Private $ result; // mysql

Finally, I have finished a simple implementation. For more information about php learning, see. The code is as follows: -- ACL Tables -- Table structure 'aclresources' Drop table if exists 'aclresources '; Create table if not exists 'aclresources '(