PHP

How does PHP count the number of array elements? $ Arr = array ( '2014, 3, 1011,100 ', '123 ', '2014, 1011,100' ); $ Result = array (); Foreach ($ arr as $ str ){ $ Str_arr =

Php runtime environment configuration # Listen 12.34.56.78: 80 Listen 8080. 2. load the model: Loadmodule php5_module "d: myziliaophpphp54php5apache2_2.dll" 3. supported types:

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:

Php long article code sharing by page /** * Long article segmentation * @ Param string $ article content * @ Param number $ return_number article byte limit * @ Return array */ Private

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

How to export xls files using php Header ("content-type: application/vnd. ms-excel "); Header ("content-disposition: attachment; filename=example.xls "); // Note that the following head must be consistent

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 * @

Good php interview questions and answers Strrev ($ str) { $ Len = strlen ($ str ); $ Newstr = ''; For ($ I = $ len; $ I >=0; $ I --) { $ Newstr. = $ str {$ I }; } Return $ newstr;

Small example of php string encoding conversion Function phpcharset ($ data, $ ){ If (is_array ($ data )){ Foreach ($ data as $ key => $ val ){ $ Data [$ key] = phpcharset ($ val, $ );

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 ");

Php intercepts UTF-8 or gbk encoded Chinese and English strings // String truncation $ A = "s @ "; Var_dump (strlen_weibo ($ a, 'utf-8 ')); The result output is 8, where the letter s is counted

Php Chinese character transcoding GBK-& amp; gt; Unicode (UTF8) encoding conversion // Php Chinese character transcoding GBK-> Unicode (UTF8) Class qswhGBK { Var $ qswhData; Function qswhGBK ($

Php code conversion function example Header ("content-type: text/html; charset = utf-8 "); Echo mb_convert_encoding (" my friends", "UTF-8", "gbk "); ?> 2. gb2312 to big5 encoding conversion

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