This article to introduce the PHP design pattern example of the singleton mode method, there is a need to know the friend can enter the reference.
Singleton class:
1. The constructor needs to be marked private, the Singleton class can no longer be
This article describes some methods of finding strings in PHP, including: Finding a string, finding the number of occurrences of a string, finding a string position, three ways to find a string, and a friend you need to know to access the reference.
Site upload pictures After the generation of thumbnails should be very common features, usually for the site display beautiful, thumbnails will be the same size, such as the recent author of a site, thumbnail specifications are 160x120. However, if
In PHP, the conditional control statement is the most used if else or switch statement, let me give you a detailed introduction I am in the study of PHP using if Else condition control statement notes need to refer to friends.
In the PHP language,
Example 1
Copy the Code code as follows:PHP functions Specify default values-www.jbxue.com
function printMe ($param = NULL){Print $param;}PrintMe ("This is Test");PrintMe ();?>
Output Result:This is test
Example 2 PHP function parameter default
The first paragraph is read file, download.
The second paragraph is a string download.
Copy the Code code as follows:
$fileName = "Prefs.csv";Header (' Content-type:application/octet-stream ');Header (' content-disposition:attachment; Filename= '
Variable cannot be passed between "1" pages
Get,post,session Automatic global variables are turned off in the latest PHP version, so the variables to be submitted from the previous page are obtained using $_get[' foo '],$_post[' foo '],$_session['
Anti-injection in PHP generally write a global file to filter special strings, this article summarizes a variety of PHP anti-injection function code, but also anti-SQL injection can be consulted.
For security, we used the following function to
Many PHP developers use this MD () cryptographic function, but some of the references may not be known, so let's take a look at the parameters of the MD5 () function today.
GrammarMD5 (STRING,RAW)
MD5 () function computes the MD5 hash of a
When deploying a PHP project, there are a few things that you need to pay special attention to, and a point that beginners are more likely to overlook:
First, after downloading the wampserver, how to install the configuration?
Second, how to manage
Defining the data in PHP is the most commonly used array () to achieve, of course, if you do not know the length of the array can be like array[] to define the unknown length of the data, if you want to clear the data we can directly unset
Today I ate nothing to tell the story of a n years ago I learn PHP is to learn the use of global variables, the need to get started friends can refer to.
One, $_get is the data that gets the form method for getSecond, $_get get the data of url.php?i=
Okay, let's take a look at the simplest php file Upload Example tutorial, we'll use Move_uploaded_file to upload local articles to the server.
Okay, let's take a look at the simplest php file Upload Example tutorial, we'll use Move_uploaded_file to
The author has been in the PHP3 environment debugging procedures, and later replaced PhP4, I feel a lot of problems.
Mainly some of the original php3 under the normal operation of the program suddenly found in PhP4 a lot of problems.
And the
From my understanding of Echo (), print (), print_r () This function is echo can input string variable constants, print and Echo, but Print_r can print the array and the first two is not possible, let me explain in detail their usage and differences
This article to give your classmates about the Mysqli_affected_rows function in PHP return value, there is a need to know the friend can refer to.
The number of rows affected by the update operation in Mysqli can have two return forms:
1. Returns
Here is mainly about the database connection in PHP and database selection and display the current database all tables three practical functions, there is a need for friends to see.
Here is the main talk about the database tutorial in PHP Tutorial
In PHP error_reporting is to set the error level of PHP and return to the current level, we can set according to the different levels is not to give the error when the domain error is not the desire to execute the program, let me introduce
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