PHP Tutorials

Empty to determine whether a variable is "empty", isset to determine whether a variable has been set. It is this so-called "as the name implies", so I began to take some detours: when a variable value equals 0 o'clock, empty () will also be set

In the application The PHP Get table field name is implemented by the Mysql_field_name () function, which has the following syntax format: String Mysql_field_name (resource $result, int $field _offset) The Mysql_field_name () function returns the

In the PHP tutorial array is a powerful data type, he can do a lot of things, can store different data types in an array, below we list the array of commonly used operations, sorting, key names, such as the sequence of sorting and other practices.

in PHP dirname () and __file__ is our constant, this article gives you a detailed introduction dirname () and __file__ constants in the use of some matters, a great interest of friends can enter the reference. DirName () function String DirName

In the application PHP gets the mysql_result of the Display database data function () Mixed mysql_result (resource result_set, int row [, mixed field])Gets the data for a field from the specified row in the Result_set. Simple but

We used to tell our friends that PHP unpack function definition Unzip the bit string data. Grammar: String Pack (string format, mixed [args] ...); return value: Array PHP Unpack function types: Data processing PHP Unpack Function Content

498) this.width=498; "Onmousewheel=" Javascript:return big (This) "src=" http://www.bkjia.com/uploadfile/2013/0904/ 20130904095451688.jpg "title=" PHP is much better than you think "/> There are a lot of complaints about PHP, and even these

Using the PHP Curl Library, you can easily and effectively grab pages. You just need to run a script, then analyze the page you crawled, and then you can get the data you want in a program. Whether you want to take part of the data from a link, or

PHP language After a long time of development, many users are very familiar with the PHP language, here I publish a personal understanding, and discuss with you. More concerned about the network of friends, especially those concerned about the site

InAt the beginning of the guide, we said that data filtering is the cornerstone of Web application security in any language, on any platform. This includes checking the data entered into the app and outputting the data from the app, and a good

In PHP5 Magic Function 1,__construct () when an object is instantiated, this method of the object is called first. Class Test { function __construct () { echo "before"; }

PHP.ini or Php3.ini is the configuration file that PHP reads at startup. The file's storage path is/usr/local/lib/. In PHP version 3.x configuration file is Php3.ini, and in PHP 4.x version changed to PHP.ini. If PHP is installed as a server module,

As the database mismanagement leads to data loss, there are no fewer examples of losses for yourself. We're going to talk this timeThe following code shows a sample script that runs the SQL statement. In this case, the SQL statement is a dynamic

PHP after a long period of development, many users are very familiar with PHP, here I published a personal understanding of the PHP string processing function, I hope to help everyone, PHP itself is a simple and powerful language. The

--------------------------------------------------------------------------------------------------------------- ------ PHP is a complex language, after years of tossing, so that its different versions are highly inconsistent, and sometimes some

[PHP] 01./**02. * Detect whether the IP that is accessed is a specified allowed IP* Enter description here ...04. */05.function Check_ip () {$ALLOWED _ip=array (' 192.168.2.* ', ' 127.0.0.1 ', ' 192.168.2.49 ');. $IP =getip ();$check _ip_arr=

There are two ways of assigning values in PHP Syntax: reference assignment, non-reference assignment. $a = 1; $b = $a; Non-reference assignment $c = & $b; Reference assignment $a = 1; $b = $a; Non-reference assignment $c = & $b;

01 "The current page server IP address is:"; echo $_server["Server_addr"]; echo ""; echo "Current client IP address is:"; echo $_server["REMOTE_ADDR"]; echo ""; Www.2cto.com echo "Current port is:"; $_server[echo "Server_port"]; Ten?>

In the development of PHP Web site for website promotion and SEO needs, need to site or local static processing, PHP generated static HTML page has a number of methods, such as the use of PHP templates, caching and other implementation of the page

Recently, this method is urgently needed to record and try ^ ^ when you are free Under Linux, you can use the Crontab + PHP method: 1. Use Crontab–e to edit timed tasks The contents are: Xx:xx:xx executing a test.php file 2, PHP files must be in