PHP Tutorials

InHeader ("Cache-control:private"); The cache of the Web page is controlled by the PHP cache controller in the HTTP message header, and the common values are private, No-cache, Max-age, must-revalidate, etc., and the default is private. Its function

PHP mysql_connect () to establish and close database connections Resource Mysql_connect([string hostname[:p ORT] [:/path/to/socket][, String Username] [, String password]]) All parameters are optional Example: @mysql_connect ("localhost",

We often use the actual coding in the need to take the whole, today we will give you a detailed introduction of some Ceil of PHP floating-point type rounding------in-process roundingDescriptionfloat ceil (float value)Returns the next integer not

If we encounter a constant value that cannot be changed in actual programming, a constant is usually defined to use the constant value. Then we're going to use it. When defining a constant, we can use the const to modify the constant, and the

PHP Programmers are mastering the The inheritance of classes in PHP is one of the most used programming features, and we can create a base class (the parent Class) and then define some basic methods in this, in our subclass we can extend the method

When we use actual code writing, we often have dealings with the group, which is difficult for beginners. Today we are going to show you how to implement PHP to delete array elements. The array in PHP to add elements is very simple, directly with

We all know that.Example code for PHP filtering strings: ? PHP NL2BR (); //N to br/> Addslashes (); Stripslashes (); Escape special characters when working against a database Chop (); Remove the right space from the string

US for The first method is to use Php-f/path/to/yourfile.php. Invoke the PHP CLI interpreter and pass parameters to the script. This method first sets the path of the PHP interpreter, the Windows platform before running the CLI, you need to set a

Through theThe code for PHP to calculate the page execution time is as follows: php Class runtime { var $ StartTime = 0 ; var $ StopTime = 0 ; function Get_microtime () { List ($usec, $sec) =

The writing of a program inevitably presents a variety of errors, so how can I handle these errors, or display errors so that we can find the changes? This uses the exception handling. Here we will introduce the concepts related to 5 exception

We pass onDefinition and usage The Addslashes () function adds a backslash before the specified predefined character. These predefined characters are: Single quotation mark (')Double quotation marks (")Back slash ()Null GrammarC Parameter

We are using For the reverse order of strings, the PHP function Strrev () has the following test code: header (' content-type:text/html; CharSet = UTF -8 '); $ Str = implode (', Range (9, 0)); print ' p>strong>before reversed:

We are using PHP generates thumbnail HTML code ! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 transitional//en"> HTML> HEAD> TITLE> upload images /title > META NAME="Generator" CONTENT ="editplus">

Everyone through thephp function sizeof () syntax: sizeof (ARRAYNAME); Tips and Instructions Note: This feature may return 0 if a variable is not set, but may also return 0 if a variable contains an empty array. The Isset () function can be used to

In this article we give you a detailed description of some PHP reads the Excel file Class code example: ? PHP Require_once '. /excel/reader.php '; Excelfile ($filename, $encoding); $ Data = New Spreadsheet_excel_reader (); Set output

Since the session is stored as a text file on the server side, the client is not afraid to modify the session content. In fact, the server side of the session file, PHP automatically modify the session file permissions, only the system read and

We are using The code examples for PHP XmlReader are as follows: ? PHP Header ("content-type:text/html; Charset=utf-8 "); $ URL = "http://www.google.com/Ig/api?weather=shenzhen "; Loading XML content $ XML = New XMLReader ();

JSON is a lightweight data format developed by a veteran software engineer Douglas Crockford, all known as JavaScript Object Notation. The Chinese translation is a "JavaScript object representation", which can easily be converted to a JavaScript

Here are some PHP IDE tools, non-common editplus and the like, are specifically for the development of PHP, interested can try to find out their own use of the right can, I recommend 3 Zend Studio,dzsoft PHP Editor,editplus, I use it now, I hope it

What we're introducing to you today is aboutThe following is a description of the Array_multisort function in the manual: Array_multisort () can be used to sort multiple PHP two-dimensional arrays at once, or to sort multidimensional arrays based