What do PHP bitwise operators mean?

Bitwise operators are operators used to perform bit-level operations on operands, bit by bit. Now let's take you through PHP's bitwise operators. I hope it will be helpful to you.

What do bitwise operators mean?

Bitwise operators (Bitwise Operators) are operators used to perform bit operations on bit patterns or binary numbers involving single bit operations.

Bitwise operators can be used for:

1. Communication stack, where individual bits in the header are appended to the data to represent important information

2. Embedded software, Used to control different functions in the chip and indicate the hardware status by manipulating various bits of the hardware register of the embedded microcontroller

3. For applications such as device drivers, encryption software, video decoding software, and memory allocators , low-level programming for applications such as compression software and graphics

4. Efficiently maintain large numbers of integers in search and optimization problems

5. Perform bitwise operations on bit flags, which can enable enumeration An instance of an enumeration type stores any combination of values ​​defined in the enumerator list

What are the bitwise operators in PHP?

The bitwise operators used in PHP are:

1, & (bitwise AND)

only The result of the expression is true when both operands are true. It can be used to set a mask to check the value of certain bits.

2, | (bitwise OR)

When any one (can be multiple) operand is true, the result of the expression is true.

3, ^ (bitwise XOR)

The result of its expression is true if and only if one of the operands is true. It is mainly used to toggle certain bits; it also helps to swap two variables without using the third variable.

4, ~ (bitwise NOT)

Provides the bitwise complement of the operand by reversing its value so that all zeros become ones and all 1 becomes zero.

5, >> (bitwise shift right) and << (bitwise shift left)

Move the bit to the right or left The number of positions specified by the two operands. The right shift operation is an arithmetic shift for operands of type int or long, while for operands of type uint or ulong, it is a logical shift. Shift operators are used to align bits.

The order of bitwise operators in PHP

The precedence order of bitwise operators (from highest to lowest) is:

1, ~

2, <>

3, &

4,^

5, |

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