PHP

Go deep into the implementation of php polymorphism. Polymorphism means that the same operation, function, and process can act on multiple types of objects and obtain different results. Different objects receive the same message and produce

Go deep into the PHP runtime environment configuration. Runtime Environment configuration: php54 + Apache2.2 + Mysql1. default port settings: # Listen12.34.56.78: 80Listen80802. load model: LoadModulephp5_moduleD:

Application Analysis of the single sample mode based on the php design mode. Singleton mode: simply put, an object is only responsible for a specific task. Singleton class: 1. the constructor must be marked as private. the singleton class cannot be

How to use PHP to calculate today of the previous month. One day, I encountered a problem. please wait for the day of the previous month. At the beginning, we used the strtotime ("-1month") function to evaluate the value. we found that there was a

A solution that is unavailable to the Apache server. Cause 1: Port 80 occupies IIS, for example, Thunder. My apache server cannot be enabled due to thunder! Cause 2: apache cannot be started due to software conflicts. cause 1: Port 80Take up IIS,

In-depth use of PHP Data cache. Copy the code as follows :? Phpwww.jb51.netarticle23093.htm functionset_cache ($ name, $ value) {set the relative or absolute directory. do not add $ cache_dir at the end. The code is as follows: // Http://www.jb51

Php judges the array as a dimension array. Copy the code as follows :? Php *** returns the array dimension * @ param [type] $ arr [description] * @ return [type] [description] * functionarrayLevel ($ arr) {$ alarray (0); function The code is as

PHP function code for converting RMB numbers into uppercase letters. On the Internet, I saw a very interesting function for converting numbers in the php RMB amount to uppercase in Chinese. the essence of this function is to convert numbers into

PHP array transfer is to correct the concept of value transfer rather than reference transfer. When calling a function, you assign the PHP array as a real parameter to the form parameter. modifying the parameter in the function does not affect the

PHP code for generating random user names and passwords. Sometimes we need to use a random user name and password in the application, which can greatly improve the security of the application, you can use mt to generate random user names and

Php learning notes-object-oriented programming. Copy the code as follows :? Phpclassdb {private $ mysqli; database connection private $ options; SQL option private $ tableName; table name publicfunction _ construct ($ tabName) {$ th The code is as

PHP array, condition, and loop statement learning. 1. array instance). Preview: 2). Code: The following is a two-dimensional array, the actual use of more. $ messarray (title message title 1, content, ctime2012-1 1. array Instance 1: 1).

PHP reads PDF content in combination with Xpdf. 1. download the documents first. If you do not need to convert Chinese, you just need to download it can: xpdf-bin-linux-3.03.tar, if you need to convert Chinese, then you still need 1. Download First,

PHP Super global variable array summary. Php Super global variable list $ _ GET [] GET the variable array submitted by the GET method $ _ POST [] GET the variable array submitted by the POST method $ _ COOKIE [] GET and set the current cookie ID of

PHP image watermark code. Supports text and image watermarks. supports random watermark positions or fixed watermark transparency settings (image and text watermarks are supported). font and color of text watermarks, text watermarks, and image

PHP outputs several processing methods for the element with multiple names in the array. 1. you can directly use the php built-in function array_intersect () arrayarray_intersect (array $ array1, array $ array2 [, array $...]) array_intersect ()

Introduction to the application of JSON in PHP. Starting from version 5.2, PHP provides native json_encode () and json_decode () functions. The former is used for encoding and the latter is used for decoding. 1. json_encode () this function is

The file download function in Php provides detailed process analysis. Analysis of the process of downloading files from the client server: the browser sends a request to access a webpage (for example, down. php) on the server. the code for this

Php file operation instance code. The following code copies a simple instance :? Phpif (! Is_dir (txt) to determine whether the txt is a folder directory {mkdir (txt); create a folder directory named txt $ openfopen (first send a simple instance

Php recursively creates and deletes folders. Method 1: Copy the code as follows :? Php *** directory generation class: UtilsMakeDir * @ authoryepeng * @ since2010.3.18 * classUtilsMakeDir {The first method is not used when the base directory is