In PHP5, you can choose not to set the initial values in the attribute definition, or assign the following red values. In PHP, there are eight simple types: & amp; bull; value type 1. boolean type 2. integer 3. float floating point type, also known
Array sorting
the elements in the array can be sorted in ascending or descending order, either in alphabetical or numerical sequence.
Common PHP Array sorting functions
Sort ()-sorts an array in ascending order
Object-Oriented programming (OOP) refers to a programming model and a programming method. An object refers to a set of classes. It uses objects as the basic unit of a program and encapsulates programs and data to improve software reusability,
Download MSSQL differential backup software with system Permissions
Download MSSQL differential backup software with system Permissions
I had no intention of entering a website when I was searching for information on the internet yesterday. I
Public indicates global and can be accessed by external subclass inside the class;Copy codeThe Code is as follows:Class Test {Public $ name = 'janking ',$ Sex = 'male ',$ Age = 23;Function _ construct (){Echo $ this-> age. ''. $ this-> name. ''. $
/* PHP object-oriented programming ** PHP5 ** Array and object: both belong to the PHP compound type (one variable can store multiple units) ** Objects are more powerful than arrays. They not only store multiple data, but also store functions in
#! /bin/Bashproject_path=$(dirname$0) Project_config=Releaseoutput_path=~/Desktopbuild_scheme=Ykticketsappworkspace_name=Ykticketsappparameter=":p: c:o:s:w:h:" whilegetopts $parameter optname Do Case "$optname" inch "P")
#! /bin/Bashproject_path=$(dirname$0) Project_config=Releaseoutput_path=~/Desktopbuild_scheme=Ykticketsappworkspace_name=Ykticketsappparameter=":p: c:o:s:w:h:" whilegetopts $parameter optname Do Case "$optname" inch "P")
First, the grammar for inch con1 con2 con3 ... Do # Perform content done for inch {min... Max} do # perform content done for (initial value; limit value; step order)) Do # Perform content done Second, practice
Input parameters for
In this section, let's take a look at how to create a class and object in PHP.
1. Create Class
In PHP, create a class similar to the one in C#/java, gossip less, and show you the simplest example:
Copy Code code as follows:
class
To serialize objects
Sometimes it is necessary to transfer an object to the network, in order to facilitate transmission, you can convert the entire object into a binary string,
When you reach the other end, revert to the original object, this
Public represents the global, the internal external subclasses of the class can be accessed;
Copy Code code as follows:
Class test{
Public $name = ' janking ',
$sex = ' Male ',
$age = 23;
function __construct () {
echo $this->age.
Original: Batch command--Configure the install-free MySQLThe free-to-install version of MySQL is an excellent assistant for Software Green Publishing, and this article describes a method for automating the configuration of MySQL using batch commands.
Shell script +expect deploying SSH in bulkFirst, the preparation of work and ideas1, three machines to do experiments (centos6.5, ip:192.168.0.22 (master control), 192.168.0.156, 192.168.0.157)2,ip:22 this one control machine, the other 2 do the
1. When defining an object method, although it is not necessary to write public by default, it is recommended to write.
PHP Object-oriented first day
1. What is Object oriented ?
Elements: Abstraction, encapsulation, sharing, emphasis on object
First look at the code:
Copy Code code as follows:
Class Strictcoordinateclass {
Private $arr = Array (' x ' => null, ' Y ' => null);
function __construct ()
{
Print "Strictcoordinateclass is being created";
print "}
function
PHPclasscat{//Public access Modifier Public $name; Public $age; } //Create $cat 1=NewCat; $cat 1->name= "Small white"; //accessing a property of an object $ object name--property name Echo $cat 1-name; Echo""; classPerson { Public $name;
The free-to-install version of MySQL is an excellent assistant for Software Green Publishing, and this article describes a method for automating the configuration of MySQL using batch commands. (1) Establish three files, respectively: Service
Sort order:-F: ignore character case-N: Compare numeric Size-T: specify delimiter -K: Specify to compare field ordinals after delimited-u: duplicate rows, only once Sort by the second row of values:$ sort-k2n SORT.TXTCCC 8aaa 11yyy 12
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