Detailed explanation of PHP mathematical functions

PHP, as a widely used back-end language, provides many functions for mathematical calculations. This article will delve into PHP's mathematical functions, their usage and functions to help readers better understand and apply these functions.

1. abs - Taking the absolute value

abs() function is used to return the absolute value of the argument passed to it. It accepts an argument of type integer or floating point number and returns its absolute value. For example, abs(-5) will return 5 and abs(2.4) will return 2.4.

2. ceil - Round up

The ceil() function is used to round up the floating point number parameter passed to it and return the closest but greater than this number Integer value. For example, ceil(2.01) will return 3 and ceil(3.58) will return 4. It should be noted that for integer type parameters, the ceil() function returns the integer itself.

3. floor - Round down

The floor() function is used to round down the floating point number parameter passed to it, returning the closest but smaller than this The integer value of the number. For example, floor(5.9) will return 5 and floor(3.16) will return 3. It should be noted that for parameters of integer type, the floor() function returns the integer itself.

4. round - Rounding

#round() function is used to round the floating point argument passed to it to the nearest integer value. For example, round(3.4) will return 3, round(2.7) will return 3, and round(5.6) will return 6. It should be noted that for integer type parameters, the round() function returns the integer itself.

5. max/min - Take the maximum/minimum value

The max() and min() functions are used to return the maximum and minimum values ​​​​in the parameters passed to them . Both functions accept any number of arguments and return the maximum or minimum value among them. For example, max(1,3,5) will return 5 and min(2,4,6) will return 2.

6. sqrt - Square root

The sqrt() function is used to return the square root of the argument passed to it. It accepts an argument of type float and returns its square root. For example, sqrt(9) will return 3 and sqrt(16) will return 4.

7. pow - Exponential power

The pow() function is used to return the power of the argument passed to it. It accepts two parameters, the first parameter is the base and the second parameter is the exponent. For example, pow(2,3) will return 8 and pow(3,2) will return 9.

8. rand - Random number

rand() function is used to generate a random integer. It accepts two optional parameters, the first parameter is the minimum value of the random number, and the second parameter is the maximum value of the random number. If no parameters are passed, a random integer between 0 and 32767 is generated by default. For example, rand(1, 10) will return a random integer between 1 and 10.

9. sin/cos/tan - sine/cosine/tangent

The sin(), cos(), and tan() functions are used to return the parameters passed to them Sine, cosine and tangent. These functions all accept a radian value as a parameter and return the corresponding value. For example, sin(0.5) will return 0.479,...

The above are only part of the PHP mathematical functions. They have many other uses and functions, such as absolute value function, rounding down function, rounding function, maximum value and minimum functions, etc. When appropriate, using the right mathematical functions or combinations of functions can greatly simplify your code and make it more efficient. Readers can learn more about the structure and usage of these functions through more information in the PHP manual.

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