PHP variable definition, variable, variable reference, and destruction method

Copy codeThe Code is as follows:$ Long = "big_long_variable_name ";$ Long = "PHP";/* use the string stored in the variable $ long as the name of the new variable, equivalent to $ big_long_variable_name = "PHP ";*/$ Short = & $ big_long_variable_name;

Example of apc Cache Usage in php

Note that zend guard must be used to encrypt the PHP file before it is uploaded to the server. If apc is used, it is unnecessary. For Messages seen from Wikipedia, apc will be built into php6, so apc is worth learning. 1. Install Extension In ubuntu

About Regular Expressions in php

In our work, we often use regular expressions to match the data we want, and even replace the matched data with the data we need. It seems difficult to do this, but if you are familiar with regular expressions, it is not a dish. Example 1: $ string

Java \. net \ PHP compares the. Net world in the eyes of programmers

First, we ,. net, PHP application shares to make a comparison, simply divide the current mainstream applications into two categories, one is enterprise applications, one is Web site applications, the following table is my summary, not necessarily

Tips for using PHP Regular Expressions

PHP regular expressions are mainly used for pattern segmentation, matching, search, and replacement of strings. Regular expressions may be inefficient in some simple environments. Therefore, you need to consider how to better use PHP regular

Self-written mysql class

---------- Php debug ----------Server = localhost; DataBase = mysql; UserID = root; PassWord = 123456Resource (5) of type (mysql result) Output completed (1 sec consumed)-Normal Termination Class DBCLS{ // Debug SwitchVar $ debug = true; //

PHP Class and object learning notes

The following is a PHP Class and object learning note written in the course. I hope this tutorial will be helpful to you. Personal notes... for reference. If you have any mistakes, please point out. Thank you. The Code is as follows:

Php post Array Method

How can I describe such a sentence? Help, online, etc.$ Num = $ _ POST ['v1 '] + $ _ POST ['v2'] + $ _ POST ['v3'] + $ _ POST ['v4 '] + $ _ POST ['v5 '] + $ _ POST ['v6'] + $ _ POST ['v7'] + $ _ POST ['v8 '] + $ _ POST [' v9'] + $ _ POST

Installing GBK encoding program webpage garbled in Apache environment in CentOS

Problem description in CentOS system using Apache server install GBK encoding program garbled, this is mainly because the default installation of Apache server character encoding for UTF-8, if the GBK program does not force encoding, garbled

Php Notice: Use of undefined constant Solution

I suddenly encountered the php Notice: Use of undefined constant error when I was doing php. One is that the variable is undefined. Let's take a look at the solution. Error Message Php Notice: Use of undefined constant Analysis These are PHP prompts

Differences between mb_convert_encoding and iconv in php

Mb_convert_encoding is used to convert the encoding. I have never understood the concept of program encoding, but now it seems a bit open. However, the English language generally does not have Encoding Problems. Only Chinese data can have this

Deprecated: Function session_register () is deprecated Solution

After changing the Php environment today, we found that the error message "Deprecated: Function session_register () is deprecated" is displayed. I will introduce it to you. Let's first look at the code The Code is as follows: Copy code

Unable to load mysql extension please check PHP configuration

Today, when I configured the apache and php environments, I personally felt that the configuration was complete. After I wrote the php file myself, I was able to execute the test successfully. However, when I ran phpMyAdmin, I was prompted that the

Php web page digital counter code

Php web page digital counter code this php counter is a simple counter code used to count the number of visits to a web page, using txt text files and php fopen functions for operations. Php tutorial webpage digital counter codeThis php counter is

Php obtains the browser name VERSION instance Program

You can directly use HTTP_USER_AGENT to obtain the browser version in php. However, you need to determine the version of the browser, Example 1 The Code is as follows: Copy code Function get_user_browser (){If (empty ($ _

Detailed description of how to configure Memcache in Drupal7

This article describes how to configure Memcache in Drupal7. I hope this method will be helpful to you. Memcache configuration is not much said. Because drupal has many modules and frequent database calls, memcache is a required configuration in the

Php join to construct an SQL query statement

The join () function combines array elements into a string. The join () function is the alias of the implode () function. Example $ Arr = array ('hello', 'World! ', 'Beautiful', 'day! ');Echo join ("", $ arr );?> Output: Hello world! Beautiful

Convert datetime to Chinese

The following is a conversion of datetime date and time to adult \ ', \ 'months \', \ 'day \ ', \ 'hour \', \ 'sub-type \', \ 'Seconds \ 'to display. For more information, see. The following example shows how to convert datetime to adult, month, day,

Php judges that the array is empty for two instances

The following provides the php code for determining whether the array is null. Because the array is a composite data type, we cannot process it like other complex data types. Let's look at the example below. Method1. Use count (array) to retrieve

Convert lowercase to uppercase

The original version has some problems in SQL 2000. Correct the error and run it in SQL 2000./*************************************** *****************Author: (wleii165@yahoo.com)Version: 1.0Creation Time: 20020227Modification time:Function:

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