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Python Out of eight PHP data types, only two hold numerical values. You can perform the most basic arithmetic actions using operators, such as PHP modulo or PHP division.
For more complex mathematical operations, PHP math functions are used. To start using them, you do not need to install any extensions or packages.
Contents
PHP Math Functions: Main Tips
- PHP math functions are used for handling float and integer variables.
- These functions are inbuilt into PHP.
List of Functions
In the table below, all the PHP math functions are listed alphabetically. If you are using PHP 4 or a newer version, you can use any of them freely. In case you forget any of these functions, return to this table to refresh your memory! Have a look:
| Function | Description |
|---|---|
| abs() | Return absolute (positive) value of number |
| acos() | Return arc cosine of number |
| acosh() | Return inverse hyperbolic cosine of number |
| asin() | Return arc sine o number |
| asinh() | Return inverse hyperbolic sine of number |
| atan() | Return arc tangent of number in radians |
| atan2() | Return arc tangent of two variables x, y |
| atanh() | Return inverse hyperbolic tangent of number |
| base_convert() | Convert number from one number base to another |
| bindec() | Convert binary number to decimal number |
| ceil() | Round number up to nearest integer |
| cos() | Return cosine of number |
| cosh() | Return hyperbolic cosine of number |
| decbin() | Convert decimal number to binary number |
| dechex() | Convert decimal number to hexadecimal number |
| decoct() | Convert decimal number to octal number |
| deg2rad() | Convert degree value to radian value |
| exp() | Calculate exponent of e |
| expm1() | Return exp(x) - 1 |
| floor() | Round number down to nearest integer |
| fmod() | Return remainder of x/y |
| getrandmax() | Return largest possible value returned by rand() |
| hexdec() | Convert hexadecimal number to decimal number |
| hypot() | Calculate hypotenuse of right-angle triangle |
| is_finite() | Check if value is finite or not |
| is_infinite() | Check if value is infinite or not |
| is_nan() | Check if value is 'not-a-number' |
| lcg_value() | Return pseudo random number in range between 0 and 1 |
| log() | Return natural logarithm of number |
| log10() | Return base-10 logarithm of number |
| log1p() | Return log(1+number) |
| max() | Return highest value in array, or highest value of multiple specified values |
| min() | Return lowest value in array, or lowest value of multiple specified values |
| mt_getrandmax() | Return largest possible value returned by mt_rand() |
| mt_rand() | Generate random integer using Mersenne Twister algorithm |
| mt_srand() | Seed Mersenne Twister random number generator |
| octdec() | Convert octal number to decimal number |
| pi() | Return value of PI |
| pow() | Return x raised to power of y |
| rad2deg() | Convert radian value to degree value |
| rand() | Generate random integer |
| round() | Round float |
| sin() | Return sine of number |
| sinh() | Return hyperbolic sine of number |
| sqrt() | Return square root of number |
| srand() | Seed random number generator |
| tan() | Return tangent of number |
| tanh() | Return hyperbolic tangent of number |
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Predefined Constants
Now, let's see some predefined constants that are also used in PHP mathematics. The column on the right indicates version of PHP in which a particular constant has been introduced:
| Constant | Value | Description | PHP version |
|---|---|---|---|
| INF | INF | Infinity | PHP 4 and newer |
| M_E | 2.7182818284590452354 | Return e | PHP 4 and newer |
| M_EULER | 0.57721566490153286061 | Return Euler constant | PHP 4 and newer |
| M_LNPI | 1.14472988584940017414 | Return natural logarithm of number PI: log_e(pi) | PHP 5.2 and newer |
| M_LN2 | 0.69314718055994530942 | Return natural logarithm of 2: log_e 2 | PHP 4 and newer |
| M_LN10 | 2.30258509299404568402 | Return natural logarithm of 10: log_e 10 | PHP 4 and newer |
| M_LOG2E | 1.4426950408889634074 | Return base-2 logarithm of E: log_2 e | PHP 4 and newer |
| M_LOG10E | 0.43429448190325182765 | Return base-10 logarithm of E: log_10 e | PHP 4 and newer |
| M_PI | 3.14159265358979323846 | Return Pi | PHP 4 and newer |
| M_PI_2 | 1.57079632679489661923 | Return Pi/2 | PHP 4 and newer |
| M_PI_4 | 0.78539816339744830962 | Return Pi/4 | PHP 4 and newer |
| M_1_PI | 0.31830988618379067154 | Return 1/Pi | PHP 4 and newer |
| M_2_PI | 0.63661977236758134308 | Return 2/Pi | PHP 4 and newer |
| M_SQRTPI | 1.77245385090551602729 | Return square root of number PI: sqrt(pi) | PHP 5.2 and newer |
| M_2_SQRTPI | 1.12837916709551257390 | Return 2/square root of number PI: 2/sqrt(pi) | PHP 4 and newer |
| M_SQRT1_2 | 0.70710678118654752440 | Return square root of 1/2: 1/sqrt(2) | PHP 4 and newer |
| M_SQRT2 | 1.41421356237309504880 | Return square root of 2: sqrt(2) | PHP 4 and newer |
| M_SQRT3 | 1.73205080756887729352 | Return square root of 3: sqrt(3) | PHP 5.2 and newer |
| NAN | NAN | Not A Number | PHP 4 and newer |
| PHP_ROUND_HALF_UP | 1 | Rounds halves up | PHP 5.3 and newer |
| PHP_ROUND_HALF_DOWN | 2 | Rounds halves down | PHP 5.3 and newer |
| PHP_ROUND_HALF_EVEN | 3 | Rounds halves to even numbers | PHP 5.3 and newer |
| PHP_ROUND_HALF_ODD | 4 | Rounds halves to odd numbers | PHP 5.3 and newer |
PHP Math Functions: Summary
- PHP math functions don't need to be installed separately, as they are inbuilt.
- They are meant to only be used with variables that contain numerical values: integers and floats.
