PHP

Php obtains and sets the variable type. Gettype-get variable typeSyntax:String gettype (mixed $ var)The possible value of the returned string is:BooleanIntegerDoubleStringArrayObjectResourceNullUnknown typeNote:Do not use gettype () to test

Understand the scope of variables in php Understand the scope of a variable A scope is a range that can be used or visible to a variable in a script. PHP has six basic scope rules: The built-in Super global variables can be used and visible

PHP generates GUID (UUID) 2. jpg (3.82 KB, Downloads: 2) Download attachment Upload /** * Generate a GUID (UUID) * @ Access public * @ Return string * @

Search for PHP code of all links on the page Function get_links ($ link ){ $ Html = file_get_contents ($ link ); $ Html = str_replace ("\ n", "", $ html ); $ Html = preg_replace ('//', "\ n", $ html );

Beautiful PHP verification code Class Page { Private $ total; // total records Private $ pagesize; // The number of entries displayed on each page Private $ limit; // limit Private $ page; // The

Record page execution time php code Class runtime { Var $ StartTime = 0; Var $ StopTime = 0; Function get_microtime () { List ($ usec, $ sec) = explode ('', microtime ()); Return

PHP function for converting full-width characters into half-width characters /** * Full-width conversion to halfwidth characters */ Function make_semiangle ($ str) { $ Arr = array ('0' => '0', '1' => '1',

Scheduled Tasks implemented by PHP Sometimes the program runs automatically to regularly call the interface. There are two methods available from the Internet: 1. the ignore_user_abort () function can be used with set_time_limit (0) and

Php randomly generates a password that is easy to remember Function random_readable_pwd ($ length = 10 ){ // The wordlist from which the password gets generated // (Change them as you like) $ Words = 'Dog,

Php watermarking code for images When using php programming, you often need to add a watermark to the uploaded image to determine the copyright and source of the image. however, the position of the watermark is usually in the lower-right

Php high-concurrency access to write files Function write ($ data) { $ Return = false; If ($ handle = @ fopen ('error.txt ', 'A + ')) { $ I = 0; While (! Flock ($ handle, 2) & $ I ++ {

Php uploads images to generate thumbnails Function createThumbnail ($ imageDirectory, $ imageName, $ thumbDirectory, $ thumbWidth, $ quality ){ $ Details = getimagesize ("$ imageDirectory/$ imageName") or die ('Please

PHP downloads files from the network Set_time_limit (0 ); // Supports all file types // URL Here: $ Url = 'http: // somsite.com/some_video.flv '; $ Pi = pathinfo ($ url ); $ Ext = $ pi ['extension'];

PHP imports cvs to MySql $ Databasehost = "localhost "; $ Databasename = "test "; $ Databasetable = "sample "; $ Databaseusername = "test "; $ Databasepassword = ""; $ Fieldseparator = ",";

Common functions and keywords in the basic part of php Bool setcookie (string $ name [, string $ value [, int $ expire = 0 [, string $ path [, string $ domain [, bool $ secure = false [, bool $ httponly = false]) Explain:

Php --- ajax transmits multi-dimensional arrays to the background Php --- ajax transmits multi-dimensional arrays to the backend. For more information, see.1 traditional: true?? The online data is generally set to true as the ajax parameter

ThinkPHP framework construction The ThinkPHP framework is built. if you need it, you can refer to it.Set up the controller environment:Define ('app _ path', './Application/') automatically creates an Application folder and stores the

Operator priority-PHP operator priority Operator priority-PHP operator priority. For more information, see. PHP operator priority Integration direction

Phpcookie & amp; session note Php cookie & session note. For more information, see. **COOKIE**1. create a cookieSetcookie (name, value, expire, path, domain); the setcookie function must be in front of the tag;Eg: setcookie (user, "zhuyumin"

Php verification code class based on GD Library (supports Chinese and English fonts, backgrounds, interference points, and distortion .......) /* * Captcha Class base on php gd Lib * @ Author Design * @