Programming | object | object-oriented programming for Project PHP: Methods for developing large PHP projects (III.)
Author: Luis Argerich translator: Limodou
overload (unlike overlay) is not supported in PHP. In OOP, you can overload a method
Define (' Earth_radius ', 6378.137);//Earth radius
Define (' PI ', 3.1415926);
/**
* Calculate the distance between the two sets of latitude coordinates
* PARAMS:LAT1 latitude 1; lng1 longitude 1; lat2 latitude 2; lng2 longitude 2; Len_type (
PHP is a weakly typed, dynamic language script. When declaring a variable, you do not need to indicate the type of data it holds.
For example:
$var = 1;
$var = "variable";
$var = 1.00;
$var = Array ();
$var = new Object ();
Dynamic variables, which
When we are doing string processing, if string processing functions do not implement what we want, we use the positive to help us achieve it.General use of regular conditions are: matching, find, split, find and replace, the following we will use
Each computer language has its own automatic garbage collection mechanism, so that programmers do not have to care too much about program memory allocation, PHP is no exception, but in object-oriented programming (OOP) programming, some objects need
1. Yiiframework
Yii is a high-performance PHP5 Web application Development framework. With a simple command-line tool, YIIC can quickly create a code framework for a Web application that allows developers to add business logic based on the
In previous versions of PHP, to determine if the session was valid, you could only use the following methods:
Session_Start ();
if (Isset ($_session))
{
echo "Started";
}
Else
{
echo "Not Started";
}
In PHP 5.4 (forthcoming release), the state of
Learning Purpose: Learn to connect to a database
I'm just going to say a little bit here. Connect MySQL database.
1, Mysql_connect
Open the MySQL server connection.
Syntax: int mysql_connect (string [hostname] [:p ort], string [username],
the difference between 1.echo and print
The functions of ECHO and print are essentially the same in PHP (output), but there is a slight difference between the two. echo output does not return a value, but print has a return value that returns Flase
PHP inherits *nix's consistent tradition of fully supporting formal expression processing. Regular expressions provide an advanced, but not intuitive, method for string matching and processing. Friends who have used regular expressions in Perl know
PHP is a server-side, HTML-embedded scripting language. PHP distinguishes other like client JavaScript where its code executes on the server side. What can PHP do?
At its lowest level, PHP can do anything other CGI programs can do, such as
PHP provides a large number of predefined constants to any script it runs. However, many constants are defined by different extensions, and are only available when the extensions are loaded, either dynamically or at compile time.
There are seven
PHP's unique syntax mixes C, Java, Perl, and PHP with its own innovative syntax. It can execute dynamic Web pages faster than CGI or Perl. Dynamic pages made with PHP compared to other programming languages, PHP embeds programs into HTML documents
Many people who learn PHP have been confused about how a PHP programmer is different from a Java programmer or a. NET programmer, and tells you that it's all the same! No different, the following content, is for a Java programmer to master the
odbc| Data | The environment used by the database
Build a test Database first
Then create an ODBC link
and build a test PHP Script.
Let's test it out.
Use of the environment
This document is mainly in the context of the WIN32 environment, you need
access|ado| Program | data | Database PHP4 has supported COM technologies in Microsoft. However, the documentation is rarely mentioned in the COM section.
Here are a few examples that I have tried. I hope these give you some idea. Note that these
Copy CodeThe code is as follows:
/* Function Definition:
* 1. function is a named
* 2. Separate Code Snippets
* 3. Function to perform a specific task
* 4. And can return a value to the program that calls it
*
* Advantages of the function:
* 1.
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