PHP Tutorials

PDO is more efficient than ADODB and MDB2. For now, implementing a "database Abstraction Layer" is a long way off, and using a "Database access abstraction Layer" like PDO is a good choice. Pdo->begintransaction ()-Indicates the rollback start point

In web development, we often cache time-consuming operations of our database, but there may be a trap, in the event of a cache failure, a large number of access to cache invalidation of the flag, all go back to query the database, resulting in a

We usually declare a class first, then use this class to instantiate an Object! However, when we declare this class, we want to use the properties or methods of this class within the class itself. What should be said? For example: I declare a user

Here's my idea of using the server's PHP environment configuration in the program, generating a license string, and then writing the string to the licensed file code. Even if the program is moved to another server, the program will not be able to

1. Installing Apache Copy the httpd-2.2.4.tar.gz to the/USR/LOCAL/SRC directory TAR-ZXVF httpd-2.2.4.tar.gz CD httpd-2.2.4 ./configure--prefix=/usr/local/apache2--enable-so--enable-vhost-alias--enable-rewrite--enable-deflate-- Enable-mods-shared=all-

Heard that this method will violate some of the search engine operating principles, may be punished by various search engines, or even delete the site. So I've just withdrawn from this deal until I'm sure it doesn't belong to cheating. A friend with

The Pcntl_fork () function is to create a child process for the current process. and run the parent process first, the PID of the child process is returned, which is definitely greater than 0. The parent process can be paused in the code of the

Copy CodeThe code is as follows: Include ("adodb/adodb.inc.php"); Contains the ADODB class library fileInclude ("adodb/adodb-pager.inc.php"); Contains the Adodb-pager class library file$conn = newadoconnection (' mysql '); Create a ADODB object

test.php Copy the Code code as follows: $test = $_post[' test '];Echo ' 12 ';Echo $test;echo $_post[' submit1 '];echo $_post[' Submit2 '];if (Isset ($_post[' submit1 ')) && $_post[' submit1 '] = = ' Submit1 '){Echo ' Ok1 ';}if (Isset ($_post['

Server-side two processing methods, one is Apache or IIS or Tomcat and other servers to set up, or specify the type of send in the program. This information is the HTTP header information, PHP has a direct operation of the head information function.

Copy CodeThe code is as follows: Echo (" Search results for query: ").$_get[' query ']. "."; ?> The main problem with this code is that it displays user-submitted data directly onto the Web page, resulting in an XSS vulnerability. There are

1, if the method of the class can be defined as static, as far as possible to define as static, it will increase the speed of nearly 4 times times. 2. The speed of $row [' ID '] is 7 times times that of $row[id]. 3. Echo is faster than print, and

When I upload a thumbnail image, the thumbnail shows the following link; Copy the Code code as follows: The result does not show the thumbnail under IE6, and then goes back to the following snippet: Copy the Code code as follows: Header ("Content-

Copy the Code code as follows: /*** Traverse the directory to find all the files in the directory under a suffix name* */function Viewdir ($directory, $ext) {if (Is_dir ($directory)) {$handle = Opendir ($directory);while ($file = Readdir

The HTTP handler is the most important function in the HTTP module, which directly hosts the HTTP request. Unlike the previous set, set is triggered when the configuration is read during Nginx startup, and the handler function is triggered when the

Features include: Require_once ("backdata.class.php"); $link = @mysql_connect ("localhost", "Database name", "password") or Die (' Could not connect to server. '); mysql_query ("Use CMS", $link); mysql_query ("Set names UTF8", $link); $dbbck =new

Copy the Code code as follows: $data = Php_strip_whitespace (' test.php '); Remove comments, spaces, line breaks (not including in the string)Echo $data;$data = Preg_match_all ("/function\s+ #匹配function和后面的空格[A-za-z_\x7f-\xff]

class file: _class.xmldb.inc.php Copy the Code code as follows: Class Xmldb extends domdocument{var $xmldb;Public function __construct ($xmldbname) {$this->xmldb= $xmldbname;if (!file_exists ($this->xmldb)) {$initxmldb = "

Copy CodeThe code is as follows: Function: PHP implements various sorting algorithmsAuthor:windlikedatetime:2007-06-09Bubble sortfunction Bubblesort ($arr) {$num = count ($arr);for ($i =1; $i for ($j = $num-1; $j >= $i; $j-) {if ($arr [$j]$iTemp =

Here is a brief introduction to two types: One, increase the time limit for timeouts Note here: Set_time_limit only sets the time-out for your PHP program, not the time-out for the file_get_contents function to read the URL. At first I thought