PHP

Analyze the efficiency of strtr functions. String matching and replacement operations are often performed recently. Previously, str_replace or preg_replace was generally used. it is said that strtr is efficient, so we compared it to the following:

Resolve the problem that Win7XAMPPapache cannot be started. Download the installed version of xampp from Windows 7. apache cannot be started. the running flag is temporarily displayed and then stopped. The log shows WARNING: terminatingworkerthread0.

Use PHP to obtain the Chinese pinyin (all and first letter ). If you don't talk about it, just copy the code as follows :? PhpclassGetPingYing {private $ pylistarray (a-20319, ai-20317, an-20304, ang-20295, ao-20292, not much nonsense said, directly

PHP random string generation code (including uppercase and lowercase letters ). First, use the string function to copy the code as follows :? PhpfunctioncreateRandomStr ($ length) {$ str0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ;

The PHP garbage collection mechanism references counter concept analysis. If you have installed xdebug, you can use xdebug_debug_zval () to display "zval" information. The copy code is as follows :? Php $ strjb51.net; xdebug_debug_zval (str); result:

Php deletes the child character at the end of the string, deletes the Start character, and deletes the two characters (implementation code ). The following problem is encountered when processing the specific characters at both ends of the string to

Use the PHPcurrent function to obtain the value of the first element of the array with an unknown character key name. About current () function: each array has an internal pointer pointing to its "current" unit, initially pointing to the first unit

List of CURL status codes (detailed ). CURL status code list status code status causes 0 normal access 1 error protocol not supported protocol. This version of cURL does not support this protocol. 2. initialization failed. CURL status code

Understand the meaning of interfaces in php interfaces. I guess the meaning of this interface, he just tried to call the interface in the implementation class in the method that will be called later. everyone may understand this. I guessed the

Parse PHP calls to existing search engines. Copy the code as follows :? Php $ key $ _ GET [key]; GET the keyword $ select $ _ GET [select]; GET the search engine selection switch ($ select) jump to different search engines The code is as follows:

Detailed description of form verification based on PHP + Ajax. 1. use the keyboard response to verify whether the form input is valid without refreshing this page. the user triggers the response event through the onkeydown and onkeyup events. Usage

Parse file_get_contents to imitate the browser header (user_agent) to obtain data. What is useragentUserAgent? the Chinese name is the user agent, or UA for short. it is a special string header that allows the server to identify the operating system

Summary of PHPDocument code annotation specifications. 1. install phpjavasentor (command line installation is not recommended). download the latest PhpDoc version from manual.phpdoc.org and put it in the web server directory so that you can access

How to parse the system information in php. $ Rootgetenv (DOCUMENT_ROOT); root directory of the Server documentation $ portgetenv (SERVER_PORT); server port $ filegetenv (SCRIPT_NAME ); current execution file $ uagetenv ($ root = getenv ('document _

Parse data interaction between Extjs and php (add, delete, query, and modify ). The copy code is as follows: success? 1.1.26 The code is as follows: // The search is not done yet. The data is displayed, but it cannot be displayed.

PHP bubble sorting binary search order query two-dimensional array sorting algorithm function details. The data structure is very important. the algorithm + data structure + documentation program uses PHP to describe the bubble sorting algorithm.

21 methods to improve PHP performance. 1. using single quotes to contain strings is faster than using double quotes to contain strings. Because PHP searches for variables in strings enclosed by double quotation marks, but not in single quotes. 2. if

Analyze the cause of failed content capture by the file_get_contents function. Failed to capture page content using file_get_contents. it may be because some host service providers disabled php's allow_url_fopen option, that is, they could not

Parse the default installation path of Apache, php, and mysql in centos. Apache: If the RPM Package is used for installation, the installation path should be in the apache configuration file: etchttpdconfhttpd. confApache module path:

Parse file_get_contents in PHP to obtain remote page garbled characters. File_get_contents of PHP obtains the remote page content. if the content is encoded using gzip, the returned string is the garbled code after encoding. 1. solution, find an