PHP

ThinkPHPCURD method order method tutorial details $ Model-> where ('status = 1')-> order ('Id desc')-> limit (5)-> select (); Note: coherent operation methods have no sequence. you can change the call sequence before

Usage of get, post, request, cookies, and session variables in the smarty Template {$ Smarty. now | date_format: "% Y-% m-% d % H: % M: % S "} 2. {$ smarty. const} can directly access PHP constants. for example:

Tutorial on SingletonPattern Class DatabaseConnection { Private static $ db; Private static $ _ handle = null; Public static function get (){ If (self: $ db = null ){ Echo _ LINE __;

Delete multiple Jsphp options If ("confirm deletion "){ $ Num = $ _ POST ['checkbox']; Foreach ($ num as $ v ){ $ SQL = "delete from aa where id =". $ v; $ Aa =

Php adds background instance code for images Function overlayjpg ($ imgsrc, $ imgdst, $ width, $ height = "") { // $ Imgsrc jpg format image path $ imgdst jpg format Image save file name $ imgwidth

Php reads the file content and clears the file // Read the file content $ Fh = fopen ($ path, "r + "); If (flock ($ fh, lock_ex) {// add a write lock $ Old_content = json_decode

Phpgd Library adds watermark implementation code to the page Header ("content-type: image/png "); $ Conn = mysql_connect ("localhost", "root", ""); // connect to the database $ Colname_rs_article = $

Php image background filling instance /** * Add background * @ Param string $ src Image path * @ Param int $ w background image width * @ Param int $ h background image height * @

Php destructor and garbage collection mechanism Class person { Public function _ destruct (){ Echo"The Destructor is executed here "; Echo"It is generally used to place, close the database, close the

Php character encoding conversion methods Print_r (iconv_get_encoding ("all ")); 2. encode and convert the specified string: Echo iconv ('utf-8', 'gb2312', 'Ours '); // Convert 'Ours from utf8 to gb2312

Use details of the curlopt_postfields parameter in phpcurl When curl is used to send some data to the server without looking at the details, the following results may be obtained. this is not the ideal result:

Php page encoding declaration method header or meta encoding Header ("content-type: text/html; charset = utf-8 "); The php page is gbk encoded. Header ("content-type: text/html; charset = gb2312 ");

Php5 destructor usage example /* * To change the template for this generated file go * Window-preferences-phpeclipse-php-code templates */ Class student { // Attributes Private $ no;

Php code conversion example /* * Common coding problems * * 1. page garbled characters: * The garbled page is mainly because the encoding of the display font is inconsistent with the encoding

Php automatically creates folders and uploads files Session_start (); If ($ _ SESSION ['Company'] = '') { // Exit (); } ?> $ Uptypes = array ('image/jpg ', 'image/jpeg',

Php string encoding conversion example Header ("content-type: text/html; charset = utf-8 "); Echo mb_convert_encoding ("You are my good friend", "UTF-8", "gbk "); ?> 2. convert UTF-8 encoded

Php string lookup function (strrpos and strchr) $ Str = '000000 '; $ Needle = '20140901 '; $ Result = strchr ($ str, $ needle ); Var_dump ($ result ); Result: string '20140901' (length = 9)Strrpos

Example of php recursive functions Function reversr_r ($ str) { If (strlen ($ str)> 0) Reverse_r (substr ($ str, 1 )); Echo substr ($ str, 0, 1 ); Return; } ?>

Php obtains the execution time of the target function. /** * Class EfficiencyTester * Efficiency tester: test the function running time * @ Version 1.0 2013.04.13 * @ Author Kross */

Php webpage title garbled characters You can solve the problem of Chinese garbled text. of course, you can also change charset = utf-8 to charset = gb2312, depending on your webpage code. Php