Php
Variables
p33 In programming an assignment creates a variable and gives it value.
>>> message = 'Hello World!'
>>> print(message)
Hello World!
>>> name@ = "John"
SyntaxError: invalid syntax
>>> class = "class 1"
SyntaxError: invalid syntax, class is a reserved keyword
... 4 lines˄˄˄
>>> n=17 # n has the value 17
>>> n+25 # n + 25 has the value 42
42
... 3 lines˄˄˄Statement
p36 ! A statement is a unit of code that has an effect. When you type a statement, the interpreter executes it.
>>> n = 17 # statement 1
>>> print(n) # statement 2
17
... 3 lines˄˄˄
>>> s1 = 'Hello'
>>> s2 = 'World'
>>> s1 + ' ' + s2
'Hello World'
>>> 'Spam'*3
'SpamSpamSpam'
... 6 lines˄˄˄➥ Questions
CARD
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