Notes---Mainly about PHP export Excel form Learning

This morning to deal with the WIN7 system of the computer front microphone and headphone port can not be used, the main phenomenon is the headset after inserting no sound, wheat inserted into the microphone can not hear the speaker, the rear port all normal. At the beginning of the judgment is definitely set the problem, so with another computer Baidu search "Win7 computer front panel headset microphone can not be used", follow the steps, the specific content is as follows, open the Control panel to find "Realtek high-Definition Audio manager" click on the upper Right folder icon, in the settings appear on the page tick " Disable front panel jack detection "Click to confirm, problem solved. In addition system damage please replace the prompt, download a hard disk detection tool, after scanning found that D disk has 1 damage, and can not repair, so and friends ran to the electronic market for a hard drive, it is understood that the Seagate hard drive warranty is two years, the western data of the hard disk warranty is three years, in the stipulated time warranty is free, After the warranty period will buy their own new hard drive replacement. In addition, the iphone headset is used on desktop computers, the Apple headset microphone and headset is a line, plug into the desktop microphone jack can only talk, and plug into the desktop headphone jack only listen to the sound, so Baidu find a solution, The final answer is to buy a 3.5MM-in-one line, divide the line of the Apple headset into two pieces, and plug it into the mic hole and the headphone hole, respectively.

Afternoon friend taught me to learn PHP generated Excel code, first in Https://github.com/PHPOffice/PHPExcel download Phpexcel class library for research, there are help documents and examples (examples), Understand object-oriented programming, an example of object-oriented concepts, object-oriented including classes and objects, such as books or houses belong to the class, and the price of the book or the size of the house belongs to the property, the book or the house belongs to the method, the method is divided into static methods (Statics) and methods, The call to static and static methods in object-oriented PHP needs to be understood (1), and static properties do not need to be instantiated for invocation. Because static properties are stored in a class, the calling method is "class Name:: Property Name", (2), static method does not need to be instantiated to invoke. Ibid. (3), static methods cannot invoke non-static properties. Because non-static properties need to be instantiated, stored in the object, (4), static methods can call non-static methods, using the Self keyword. In PHP, a method is self: after that, it automatically transforms into a static method, and the method needs to be instantiated before it can be called. There is also a basic explanation of the 01pharsimple.php code in the Phpexcel class library, which is currently being understood.

Notes---Mainly about PHP export Excel form Learning