PHP

0x00 Serialization function Serialize (): Returns a string with variable type and value Unserialize (): Want to change the serialized string back to the value of PHP Test code: Class test{var $a;var $b;function __construct ($a, $b, $c) {$a = $a;$

Simple Factory mode: ① abstract base class: class definition abstract Some methods to implement in subclasses② inherits from the abstract base class: Implementing an abstract method in a base class③ Factory class: Used to instantiate objects What

One, Custom functionThe custom function is our own defined function, in PHP the custom function format is as follows:function Funname (arg1, arg2, Arg3 ...) {Todoreturn values;} The code is as follows Copy Code function

Before PHP5, each PHP framework, if you want to implement the automatic loading of classes, is generally a kind of convention to implement a traversal directory, automatically load all the files that meet the Convention rules of the class or

In the course of learning "ten days to learn PHP", when you see the problem of database connection, due to the lack of knowledge, encountered difficulties. So find a friend to help write a PHP applet, posted here, hope for everyone can help. I wrote

When you register on a forum, there is usually an e-mail address verification function, when you enter an illegal format, there will be some kind of error message. We can use the following rule expressionEreg ("^[a-za-z0-9_] @[a-za-z0-9-]. [ a-za-z0-

The number of times to execute the same code set is used in PHP. The basic syntax of the author is as follows: The For loop is just a little bit more code, and loops are added to it. And one of the common tasks involved in the cycle is: Sets the

Enter Query keywords:Create a Database Tutorial connectionMySQL tutorial _connect (' localhost ', ' 111cn.net ', ' www.111cn.net ');mysql_select_db (' www.111cn.net ');//Database selectionmysql_query (' Set names "GBK"); Progress Query Operations

Guide:Capital Y represents a four-digit year, while lowercase y represents a two-digit number for the year;Lowercase m represents the number of months (with leading), while lowercase n indicates the number of months without leading.echo Date ('

API Generation Interface Documentation Example: { "Name": "September premium sharing activity Micro-communication Interface", "Version": "1.0.0", "description": "September Gift insurance receive share activity Micro-interface document (T=1)",

Why use Trait The PHP language uses a typical single inheritance model, in which we first write a generic root class, implement basic functionality, then extend the root class, create more specific subclasses, and inherit the implementation

If your PHP site/var/log/httpd/error_log the following error:PHP Fatal error:call to undefined function mcrypt_get_block_size () In/var/www/html/miniblog/system/classes/class_ des.php on line 40Heart presumably is MCrypt not installedThe

The array_search () function is the same as the in_array () function. You can find a key value in the array. If this value is found, the key name of the matching element is returned. If not found, false is returned.If the third parameter strict is

The file_get_contents () function reads the entire file into a string.Like file (), the difference is that file_get_contents () reads the file into a string.The file_get_contents () function is the preferred method for reading the file content into

String getservbyport (int $ port, string $ protocol)*/$ Services = array ('80', '21', '22', '23', '25', '123'); // define an arrayForeach ($ services as $ service) // read content cyclically{$ Protocol = getservbyport ($ service, 'tcp '); // return

The in_array () function searches for the given value in the array.SyntaxIn_array (value, array, type)*/ The code is as follows:Copy code $ OS _list = array ("mac", "nt", "irix", "linux"); // defines an arrayIf (in_array ("irix", $ OS _list) //

First create the/tmp/php-cgi.sock file and change it to www-data:# For nginx users, it seems that they must belong to the nginx user group before they can be properly used and not verifiedSudo chown www-data/tmp/php-cgi.sockTo nginx. conf, if you

The PHP pattern modifier, also known as the pattern modifier, is used outside the delimiters of regular expressions. It is mainly used to adjust the interpretation of regular expressions, and extends some functions of regular expressions in

ExampleWe use preg_replace and str_ireplace to replace The code is as follows:Copy code Public static function filterStr ($ value){If (empty ($ value )){Return "";}$ Value = trim ($ value );$ Badstr = array ("x00", "% 00", "r", "&", "," '"," ",

If you have a large array and all you need to do is find an existing given value, you can use in_array () to return true or false. The following code outputs "Not found in this array" because you will find an existing "Alber" in $ namesArray ".$