How to write a WordPress plugin?
What is wordpress plugin? A WordPress plugin is a php file in the directory wp-content\plugins\. Complex plugin may have multiple files and more complex directory structure. It can use a […]
how to debug php?
Of course, you can put echo or print statements somewhere in the debugged php file to print some messages or value of variables. More convenient way is using an IDE […]
php convert array to object
An array can be converted to an object in PHP. <?php $a=array(“aa”,”bb”); $a=(object)$a ?> However you can not access the member of $a because there is not a name for […]
some php functions used in WordPress source code
strip_tags(“hello <p> world</p>”)–> “hello word” list($a,$b,$c)=$myarray; $a<=$myarray[0],$b<=$myarray[1],$c=$myarray[2] compact(“variablename1″,”variablename2″,…”) returns an array whose members are “variablename1″=>$variablename1, “variablename2″=>$variablename2, …. if $variablename is not in the current scope, compact won’t include it. array_rand($arr) […]
wordpress source code analysis(2)
In the previous chapter, we know wp-settings.php is a complex file. This file loads almost everything like plugins and active theme. We will look into it further. After including plugin […]
php dirname
dirname in php may not be what you think it to be: given a full path name of a file, return its directory part. In fact, dirname(pathname) returns the parent […]
wordpress source code analysis(1)
The first php file loaded when you access a WordPress site is index.php under the root directory of the site. It is a very simple file with only 2 lines […]
Difference between include, require, include_once, require_once in PHP
A C programmer often uses include statement in PHP, but when you read professional PHP scripts, you may find require/require_once is more common. What are the differences between include, require, […]
Hello world!
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