What are PHP operators and how do we use PHP operators?

The previous article introduced you to "What is session control and http protocol? How to use it? 》, this article continues to introduce to you what PHP operators are, how we use PHP operators (with detailed explanation)

PHP median operation Symbol:

Bit operators operate on bits. Bits refer to each "bit" of binary. There are 32 bits in binary.

Bit: composed of 1 and 0

&:bitwise AND

1 &1=>>>1

1 &0=>>>0

0&1->>>0

0&&=>>>0

|:Bitwise OR

1 &1=>>>1.

1 &0=>>>1

0&1->>>1

0&0=>>>0

##~:bitwise not

~1=>>> 0

##~0=>>>1

^:bitwise XOR

1^0->>> 1

0^1=>>>1

In other cases, it is 0;

<<: Bitwise left shift

Number of digits to move: 5<< 3

The 5 numbers are moved by 3 digits. The first ones can be considered deleted and the following ones are filled with 0

##>>: Bitwise right shift

Number of digits to move: 5>>3

5 digits are moved by 3 digits, the first one can be considered deleted, and the last one is filled with 0

Note: Bit operations are all operations on integers, and the operations are all decimal, but the CPU operates in binary.

What is binary

Explanation: Binary is a 32-bit number composed of 0 and 1, and every two is entered into one;

Binary: 0 and 1111111111111111111111111111

The corresponding binary of 5 in decimal: 0000000 0000000 0000000 00000101

111011 to decimal:

The weight of the 0th digit of the base number is 2 to the power of 0, the weight of the 1st digit is 2 to the 1st power, and the weight of the 2nd digit is 2 to the 2 times....

Formula: Nth digit*2 raised to the Nth power, the results are added again.

1 1*2^5=32

1 1*2^4=16 .

11*2*=8

00*2=0

11*2-= 2

11*20=1

1 2 0 8 16 32 = 59

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