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What are the Tokens in PHP | Step by Step Guide

Tokens in PHP

In this article, we will discuss tokens in PHP. Before that, First we learn to know any language by its character set

The character set of PHP

 

How do we learnt English language?

  • Digits : 0, 1,2,3,4,5,6,7,8,9
  • Alphabets: A – Z, a- z
  • Special Characters : , , ., :, ;, !, @, #, $, %,^,&,*,(, ), +, -, etc

Character set: set of characters used in the language for forming words, sentences, paragraphs, etc,

As PHP is also a language, it also has a set of characters used in forming tokens, instructions, functions, etc.

PHP used ASCII characters set to define all its language constructs

ASCII (7 bit – 128): American Standards Code for Information Interchange. For every character ther is unique number in ASCII Character set.

Decimal Symbol Decimal Symbol Decimal Symbol Decimal Symbol
0 Null character (\0) 32 space 64 @ 96 .
1 start of heading 33 ! 65 A 97 a
2 star of text 34 * 66 B 98 b
3 End of text 35 # 67 C 99 c

Tokens of PHP language

The “Smallest Unit” of any programming language is generally called a Token (w0rd).

  • C – Commentsa
  • K – Keywords and Data Types
  • I – Identifiers
  • C – Constants and Variables
  • S – Strings and Characters
  • O – Operators: LARA BICS
  • – L – Logical (&&, ||, !, and , or, xor)
    – A – Arithmetic (+, -, *, /, %, **)
    – R – Relational (<, >, <=, >=, ==, !=, <>, ===, !==)
    – A- Assignment ( = )
    – Arithmetic Assignment ( shorthand assignment) : (+=, -=, *=, /=, %=)- B – Bitwise (&, |, ~, ^)
    – I – Increment and Decrement( ++, –)
    – C – Conditional(?:)
    – S – Sting operator (. , .=)
    – Special operators ( ->, ::, =>)
  • S – Separators, ([] ( Array dimension), ; (Semicolon), (comma), {} (Block separator) and more)

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