Commonly used data functions in php_PHP tutorial-PHP Tutorial-php.cn

Commonly used data functions in php_PHP tutorial

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Release： 2016-07-20 11:00:34

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PHP function description
ABS device ( ) returns the absolute value of No. 3
acos() returns arccosine number 3
acosh ( ) returns the 4th number of the inverse hyperbolic cosine
axin( ) returns the 3rd number of arcsine
asinh ( ) returns the 4th number of the inverse hyperbolic sine
atan() returns the arctangent of some number as a numerical value between pi/2 and pi/2 radians 3
atan2() returns the angle of the point (x, y) as a numerical value between pip and pip radians 3
atanh ( ) returns the 4th number of the inverse hyperbolic tangent
base_convert() converts some from one base to another 3
bindec() converts the binary number to the 3rd decimal point
Cell() returns a number of values rounded up to the nearest integer 3rd
Power Factor ( ) returns the 3rd number of cosine
Hyperbolic cosine ( ) returns the 4th number of the hyperbolic cosine
decbin() converts decimal number to binary number 3rd
dechex ( ) converts a decimal number to a hexadecimal number 3rd
Fry( ) converts a decimal number to an octal number 3rd
deg2rad ( ) converts a certain degree of radians No. 3
Zhang ( ) returns the top 3 values
expm1 ( ) returns value before -1 4
Floor() returns some rounding down to the nearest integer 3rd
fmod() returns the remaining (modulo) division of arguments four
getrandmax( )
Returns the maximum random number that can be returned by calling rand() function No. 3
hexdec() converts to hexadecimal decimal number 3rd
hypot() returns the length of the hypotenuse of a right triangle four
is_finite() returns true if the value is finite number 4
is_infinite() returns true if the value is an infinite number 4
is_nan() returns true if the value is not number 4
lcg_value ( ) returns a pseudo-random number in the range (0,1) 4
log( ) returns the natural logarithm (Basic English) number 3
log10 ( ) returns base - number 3 of 10
log1p() returns log(1+number) 4
Maximum ( ) returns the number of two specific numbers with the highest value three
People ( ) returns the number of people with the lowest value of two specific numbers three
The maximum possible value returned by mt_getrandmax ( ), mt_rand ( ) 3
mt_rand() returns a random integer using Mason's tornado algorithm three
mt_srand() Seeds the Mason Tornado Random Number Generator Three
octdec() converts an octal number to a decimal number 3
Pi() returns PI value 3
pow() returns the value of x with the power of y 3
rad2deg ( ) converts radians to a certain extent
rand() returns a random integer 3rd
Round() rounds some number to the nearest integer 3rd
sin( ) returns the 3rd number of the sine
Raw( ) returns the 4th number of the hyperbolic sine
sqrt() returns the square root number 3
srand ( ) to seed a random number generator three
Tan ( ) returns the tangent 3rd angle
tanh() returns the hyperbolic tangent of angle 4