php default include path
The default include path in php is “.:/usr/share/pear:/usr/share/php”(3 directories). You can change the include path by the include_path=”” option in php.ini. Note that the directories are separated by colon in […]
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php regex multiline match
Two modifiers are involved in php multiline regex expression: m and s. Specifically, the m modifier has influence on the interpretation of the ^ and $ symbols while the s […]
Re-Understanding QSqlQuery prepare and bindValue
I do not understand why the prepare function and the bindValue function exist in QSqlQuery, although I used them many times. Things could be simpler: QSqlQuery query(“select * from myprogrammingnotes”); […]
How to install composer in Linux?
We’ve talked about how to install composer on Windows. But your website which uses composer packages in php is typically on a Linux server. So, today we will present you […]
Where is composer installed on Windows?
Where is my composer installed on Windows 10? Very likely, you will ask this question after you download composer and install it on your system, because the installer does not […]
php namespace
I never used php namespace as my project is not complex enough to use it. But a small project cannot prevent some programming guru from using namespace. The result is […]
access property of object
To access public property of object in php, just use $obj->propertyname like: class MyClass { public $a; }; $my=new MyClass; $my->a=1; echo $my->a; Note that, unlike C++, you cannot use […]
imagettftext font path
php has a set of functions that you can use to generate images on the fly, or add text to existing images. Basically, you use imagecreatetruecolor to create an image(or […]
firefox extension console log
When you are debugging your javascript code(so called page script) of your website, you may use console.log to write the value of a variable to console. You can press F12, […]
timing of some early events when loading a web page
When browser starts to load a web page, document.readyState===loading. When DOM is constructed, document.readyState==interactive. When page is fully loaded, i.e., the images/css are all loaded, document.readyState===complete. After document.readyState becomes interactive, […]