DJ Mike's Tutorials: PHP

Math Functions

A small sample of functions that work on numbers

• abs()
  Convert to absolute value
• acos()
  Arc cosine
• acosh()
  Inverse hyperbolic cosine
• asin()
  Arc sine
• asinh()
  Inverse hyperbolic sine
• atan2()
  Arc tangent of two variables
• atan()
  Arc tangent
• atanh()
  Inverse hyperbolic tangent
• base_convert()
  Convert a number between arbitrary bases
• bindec()
  Binary to decimal
• ceil()
  Finds the "ceiling" of a fraction; rounds up
  Show Example | Show Code | Hide
• cos()
  Finds cosine of theta measured in radians. To find cosine of theta measured in degrees you must first convert degrees to radians with deg2rad().
  Show Example | Show Code | Hide
• cosh
  Hyperbolic cosine
• decbin()
  Decimal to binary
• dechex()
  Converts decimal to hexadecimal
  Show Example | Show Code | Hide
• decoct()
  Converts decimal to octal
  Show Example | Show Code | Hide
• deg2rad()
  Converts degrees to radians
  Show Example | Show Code | Hide
• exp
  Calculates the exponent of e
• expm1
  Returns exp(number) - 1, computed in a way that is accurate even when the value of number is close to zero
• floor()
  Rounds a number down
  Format: $num = floor($number);
  Show Example | Show Code | Hide
• fmod()
  Returns the floating point remainder (modulo) of the division of the arguments
• getrandmax()
  Show largest possible random value
• hexdec()
  Converts hexadecimal to decimal
  Show Example | Show Code | Hide
• hypot()
  Calculate the length of the hypotenuse of a right-angle triangle
• is_finite()
  Finds whether a value is a legal finite number
• is_infinite()
  Finds whether a value is infinite
• is_nan()
  Finds whether a value is not a number
• lcg_value()
  Combined linear congruential generator
• log10()
  Base-10 logarithm
• log1p()
  Returns log(1 + number), computed in a way that is accurate even when the value of number is close to zero
• log
  Natural logarithm
• max()
  Find highest value
• min()
  Find lowest value
• mt_getrandmax()
  Show largest possible random value
• mt_rand()
  Generate a better random value
• mt_srand()
  Seed the better random number generator
• octdec()
  Converts octal to decimal
  Show Example | Show Code | Hide
• pi()
  Get value of pi
• pow()
  Exponential expression
• rad2deg()
  Converts radians to degrees
  Show Example | Show Code | Hide
• rand()
  Returns a number between min and max.
  Format: $num = rand(min, max);
  Show Example | Show Code | Hide
• round()
  Rounds a number to a spacified number of places
  Format: $num = round($number, $places);
  Show Example | Show Code | Hide
• sin()
  Finds sine of theta measured in radians. To find sine of theta measured in degrees you must first convert degrees to radians with deg2rad().
  Show Example | Show Code | Hide
• sinh
  Hyperbolic sine
• sqrt()
  Finds the square root.
  Show Example | Show Code | Hide

tanh()
Hyperbolic tangent PHP: Mathematical Functions - Manual

---

< ^ >

Created by DJ Mike from Santa Barbara

<a href="http://www.statcounter.com/" target="_blank"> <img src="http://c5.statcounter.com/counter.php?sc_project=1321035&java=0&security=da2193dc" alt="counter free hit invisible" border="0" /></a>