Jan 6 TIL

January 6th, Wed.
(TIL = Today I learned.)

Today, I learned : PHP tutorials

Bookmark : javaTpoint (magic-constants) / tutorialsPoint (intro)

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0. PHP

1) echo statement

• can have multiple input variables, separated by comma(,)s.

2) PHP properties

• interpreted language (don't need compilers and such)
• faster than other scripting languages
• can be embedded into HTML.
• object-oriented.
• can create sessions.
• can access / set cookies.
• PHP is a secure language to develop the website. It consists of multiple layers of security to prevent threads and malicious attacks.

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1. variable rules

• variable name starts with alphabet or underscore(_).
• variable name is case-sensitive.
  
• variable name starts with $ sign. constants doesn't.
  
• static variable is stored dynamically and used globally.
  

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2. special variable properties

1)double-dollar ($$)

PHP supports variable name as a variable.