PHP Tutorials

The first method: Copy CodeThe code is as follows: /** * Directory Generation class: Utilsmakedir * @author Yepeng * @since 2010.3.18 */ Class utilsmakedir{ The directory is not established when the base directory is created. This should be a

Although you can resize a picture arbitrarily by specifying the width and height of the image in HTML, this method does not reduce the number of pixels in the image. The size of the graphics file does not change, and of course it does not speed up

Copy CodeThe code is as follows: /** * @author Seraphim * @copyright 2012 */ $ADMIN = Array ( ' Defaulturl ' = ' http://www.xx.com/images/banner-header.gif ',//hotlinking return address ' Url_1 ' = ' http://www.xx.net/file ', ' url_2 ' = '

Developers, database architects, and system administrators should take precautions before deploying a PHP application to the server. Most precautions can be done with a few lines of code or by adjusting the application settings slightly. 　　 #1:

1, Declaration function In PHP, the method of defining functions is almost the same as in other programming languages. The following is the syntax structure of the PHP declaration function: Copy CodeThe code is as follows: Function function_name ($

Mind Map Click, you can see the big picture. Introduction I write down the places I like and pay more attention to and share them with you. Last time I wrote a "PHP with the boss of the dialogue." Still have a lot of questions, this book helped me

Copy CodeThe code is as follows: $str = ' People's Republic of China 123456789ABCDEFG '; Echo Preg_match ("/^[u4e00-u9fa5_a-za-z0-9]{3,15}$", $strName); Run the above code and see what the message is? Warning:preg_match (): compilation

PHP 5 authoritative programming (PHP 5 Power programming) PDF download Address http://www.jb51.net/books/28207.html In PHP4, without using __construct () as the name of the constructor, a method must be defined using the name of the class, as in C +

Since the creation of the 1994 PHP language, the magic has been sought after as the preferred language for website design. The release of PHP4.0 in 2000 undoubtedly injected fresh blood into its life, and was respected for its open-source mind. The

Ceil-into one method to take the wholeDescription float ceil (float value) Returns the next integer not less than value, in which value is entered if there is a fractional part. The type returned by Ceil () is still float, because the range of float

A string in PHP can be defined in the following 4 ways: single quotation marks Double quotes HEREDOC Syntax Structure NOWDOC Syntax Structure (Since PHP 5.3.0) Single quotation marks The simplest way to define a string is to

1. Code optimizationCode optimization is not just about writing clean and clear code, but simplifying the code. You can use Zend Optimizer to help you do these tedious tasks. Zend Optimizer can be obtained free of charge from Zend Technologies's

NL2BR ();/\ n to Addslashes (); Stripslashes ();//Escape special characters when working on a database Chop ();//Remove the right space of the string Trim ();//Remove all spaces in the string LTrim ();//Remove the left space of the

Grammar sprintf (format,arg1,arg2,arg++) Parameters Description Format Necessary. Conversion format. Arg1 Necessary. Specifies the parameter that is inserted into the first% symbol in the format

Write the required function, URL complement function, can also be called FormatUrl. Write this function is to develop the collection program, the collection of articles will often encounter the page path is "relative path" or "absolute root path" is

Copy CodeThe code is as follows: Class Crypt3des { Private $key = ""; Private $iv = ""; /** * Construct, pass two key and IV that have been base64_encode * * @param string $key * @param string $iv */ function __construct ($key, $iv) { if (Empty

Explore Register_globals Dedecms limits the Register_globals. Because the Register_globals set control PHP variable access scope, if the opening will cause unnecessary security problems, so here it is forced to close, if the webmaster space does

Summarize: Using PHP to download the file needs to give four headers (), you can refer to my other blog post: How PHP implementation of the download function ultra-detailed process analysis Calculate the size of the file, do not need to open the

In natural language, we understand that the concept of abstraction is a large description of an object, which is a common characteristic of a class of objects. Then in PHP it is the same, we abstract a class, we can indicate the general behavior of

A. Internal sorting (directly loaded into memory for sorting): Includes Exchange sort (bubbling and fast method), select Sort, insert sort B. External sorting (due to large amount of data, need to sort with external storage): Includes merge sort,