PHP

1. What is session 2.Session from the User access page, to disconnect from the Web site to form a session life cycle. During a session, the client is assigned a unique sessionid to identify the current user and differentiate it from other

The code is as follows Copy Code function Imagebmp ($img, $file = "", $rle =0){ $colorcount =imagecolorstotal ($IMG); $transparent =imagecolortransparent ($IMG);$istransparent = $transparent!=-1; if ($istransparent) $colorcount--;

First, the core points of thinking: 1. What global variables are outdated and how to handle them?such as: unset ($GLOBALS, $_env, $HTTP _get_vars, $HTTP _post_vars, $HTTP _cookie_vars, $HTTP _server_vars, $HTTP _env_vars);2. What global variables

PHP is no exception! A static method (property) is a property or method that is annotated with a static keyword (for example, a static property public static username;)The biggest difference between static and Non-static methods is that their life

PHP header to define a PHP page for UTF encoding or GBK encoding PHP page for UTF encodingHeader ("content-type:text/html; Charset=utf-8 "); PHP page for GBK encodingHeader ("content-type:text/html; charset=gb2312 "); PHP page for BIG5

Using php5.3 or above we can use PDO and mysqli to process data directly 1. Use PDO (PHP Data Objects) The code is as follows Copy Code $stmt = $pdo->prepare (' SELECT * FROM employees WHERE name =: Name

The most common applications are in user login and some API data exchange scenarios.The author contains some of the more classic PHP encryption and decryption function code, to share with you. Encryption and decryption principle is generally through

002 Class Captcha 003 { 004 Private $_about = Array ( 005 ' imageline ' =>8,//Line interference, normal for 0 006 ' Imagepixel ' =>300,//pixel interference, normal for 0 007 ' Location ' =>true,//font random position, false normal 008 '

PHP Encryption Program Encryptionfunction Jiami ($data, $PSW) {For ($i =0, $j =0; $i $middle = Ord (substr ($data, $i, 1)) +Ord (substr ($PSW, $j, 1));if ($j > strlen ($PSW)) {$j = 0;}$str. =CHR ($middle);}return ($STR);}Decryptfunction Jiemi

The session is mainly divided into two parts: One is the session data, which is stored by default under the server's TMP file and is in the form of a file. Another is marked session data session Id,session ID, is that session file file name,

Many places in WordPress use Stdclass to define an object (usually in the form of an array), and then use Get_object_vars to "convert" the defined object to a number of groups. As shown in the following code: Php $tanteng = new StdClass

The number of rows affected by an update operation in MYSQLI can be returned in two ways: 1. Returns the number of rows matched 2. Returns the number of rows affected By default, the value returned by Mysqli_affected_rows is the number of rows

1. File () function The file () function reads the entire document into an array. Similar to file_get_contents (), the difference is that file () returns files as an array. Each cell in the array is the corresponding line in the file, including

Overview: The network Silver payment interface and Alipay interface is roughly the same, the main difference is that the bank of communications to provide the core of the interface, such as encryption, such as through the Java implementation. So, to

PHP Tutorial FTP transfer files to server Begin$ret = Ftp_nb_get ($my _connection, "test", "README", Ftp_binary,FileSize ("test"));Or: $ret = Ftp_nb_get ($my _connection, "test", "README",Ftp_binary, Ftp_autoresume);while ($ret = =

The original is based on the user input of the digital judgment and then converted to the desired capital number, if we first put the case of an array, and then judge the conversion is OK.$data = $_post[' RMB '];if (!ereg ("^[0-9.]", $data)) Die ('

The first file name is Phplist.inc The code is as follows Copy Code ?Global $htmlroot;$htmlroot = "/web/html"; "/web/html" is the Apache document root directory that users can modify according to their own configuration?>

The code is as follows Copy Code function Deltreedir ($dir) {$dir = Realpath ($dir);if (! $dir | |! @is_dir ($DIR))return 0;$handle = @opendir ($dir);if ($dir [strlen ($dir)-1]!= directory_separator)$dir. = Directory_separator;while (

  code is as follows copy code /*—————————————————— */-Delete files and directories recursively– For example: Del_dir ('../www.1111cn.net/'); Note: returned/is required– $type Force Delete directory, true Yes, false no/*———————————

if ($_files[' file ']) {// ----------------------------------------------------------------------------------------------////Description: File Upload date: 2004-5-2//// ---------------------------------------------------------------------------------