PHP Tutorials

The following gives the source code of the two versions of the function and the simple test, and finally I will give a more practical function of the string interception. It is important to note that the string interception problem discussed here is

Official Download Address: MySQL http://www.mysql.com/downloads/mysql/find an MSI file down. Apache http://httpd.apache.org/download.cgi PHP http://windows.php.net/download/#php-5.4 The first is MySQL, (this way, the Oracle acquisition of

Copy CodeThe code is as follows: Automatic conversion character set supports array conversion function Auto_charset ($fContents, $from = ' GBK ', $to = ' utf-8 ') { $from = Strtoupper ($from) = = ' UTF8 '? ' Utf-8 ': $from; $to = Strtoupper ($to) = =

Today to others to do the site when there is a need to have a domain name query function, check out a bit of information to write a simple query function The front page uses a checkbox with the following code: Copy CodeThe code is as follows:

The first type: Copy CodeThe code is as follows: ? $str = "This is a test \ n"; $patten = Array ("\ n", "\ n", "\ R"); ?//replace \ r \ n First, then presence \ n $str =str_replace ($order, "", $str); ?> PHP has three ways to solve 1. Use

Copy CodeThe code is as follows: $a = 3; $b = 6; if ($a =5| | $b =7) { $a + +; $b + +; } Var_dump ($a, $b); Trap One Take $a=5, $b = 7 as $a==5, $b ==7 Error Result: 3,6 Trap Two Operator precedence, $a=5 assignment is considered successful

I have seen the source of Phpcms, discuz, so there may be a lack of innovation, but the principle is mostly connected, but the details may be slightly different processing. To get to the point, let's start with the concrete implementation process. 1.

1> if ("false") is equivalent to if (true), because a non-empty string is true 2> Check Data type: Is_array (); Is_object (); Is_string (); Is_null (); Is_integer (); 3> PHP5 introduces the type hint (type hint) of a class to constrain the parameter

1. Universal Cache Technology: Data cache: In this case, the data cache refers to the database query PHP cache mechanism, each time you visit the page, will first detect the corresponding cache data exists, if not exist, connect to the database,

1. Factory mode The main function is to reduce the coupling degree. Copy CodeThe code is as follows: Abstract class operation{ Abstract public Function GetValue ($num 1, $num 2); Public Function getAttr () { return 1; } } Class Add extends

Copy CodeThe code is as follows: Class Crypt3des { Private $key = ""; Private $iv = ""; /** * Construct, pass two key and IV that have been base64_encode * * @param string $key * @param string $iv */ function __construct ($key, $iv) { if (Empty

There are three types of access modifiers in PHP, namely: Public (common, default) Protected (Protected) Private (privately) They can be used, respectively, on the properties and methods of a class (the properties and methods of a class are

Examples of. htpasswd files: User1:{sha}kgpad671vnu0ou5lqlin/h6q6ac= User2:{sha}npmqpex3kpqto+x/+zckhdricqi= user3:{sha}q1fh2ltujjkncp11m0m9wuh5zrw= Copy CodeThe code is as follows: Class HTPASSWD { Private $file = '; Private $salt = '

Examples of. htgroup files: Admin:user2 Editor:user1 User3 Writer:user3 Copy CodeThe code is as follows: Class Htgroup { Private $file = '; Private Function Write ($groups = Array ()) { $str = "; foreach ($groups as $group = = $users) { $users _str

PHP Super Global Variables list$_get[] Get an array of variables submitted with the Get method $_post[] Get an array of variables submitted with the POST method $_cookie[] Get and set the COOKIE ID of the current Web site $_session[] A unique

Is_numeric: Detects if it is a numeric string and can be negative and fractional Ctype_digit: Detects if characters in a string are numbers, negative numbers and decimals are detected without Note that the parameter must be a string, and if it is

For those of us who want to do web security, it is better to learn, but all things catch the root, we want not fish but fishing. In the country, a variety of PHP Programs 1.0 version, 2.0 version like springing up, but, everyone is concerned about

A brief description of the relevant knowledge is given in the PHP manual: 1. Connection handling: Inside PHP, the system maintains a connection state with three possible conditions: 0-normal (Normal) 1-aborted (Abnormal exit) 2-timeout (Timeout)

Example 1 Copy CodeThe code is as follows: Header ("Content-type:image/png"); /* Notify browser, to output image */ $im = Imagecreate (400, 300); /* Define the size of the image */ $gray = Imagecolorallocate ($im, 235, 235, 235); $pink =

I will share this out, if later who need to be able to download the following plugin directly How to use: In Cnblogs Select Backup data, export an XML to local; Download the plugin in the attachment, install to the \wp-content\plugins directory;