PHP takes integer functions commonly used four methods, the following collection of four functions, often used to take the whole function, a small sum today! Actually very simple, is just a few functions ~ ~ mainly: Ceil,floor,round,intval
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PHP takes integer functions commonly used in four ways, the following collection of four functions;
Often used to take the whole function, today a small sum! Actually very simple, is just a few functions ~ ~ mainly: Ceil,floor,round,intval
First, ceil-into a method to take the whole
Description
float ceil (float value)
Returns the next integer not less than value, in which value is entered if there is a fractional part. The type returned by Ceil () is still float, because the range of float values is usually larger than the integer.
Example 1. Ceil () example
< PHP
echo ceil (4.3); 5
echo ceil (9.999); 10
?>
Second, the floor-to take the whole process
Description
Float floor (float value)
Returns the next integer not less than value, rounding out the fractional part of value. The type returned by floor () is still float, because the range of float values is usually larger than the integer.
Example 1. Floor () example
< PHP
echo floor (4.3); 4
echo Floor (9.999); 9
?>
Three, round-the floating-point number rounding
Description
Float round (float val [, int precision])
Returns the result of rounding Val based on the specified precision precision (number of digits after decimal point). Precision can also be negative or 0 (the default value).
Example 1. Round () example
< PHP
Echo round (3.4); 3
Echo round (3.5); 4
Echo round (3.6); 4
Echo Round (3.6, 0); 4
Echo Round (1.95583, 2); 1.96
Echo Round (1241757,-3); 1242000
Echo Round (5.045, 2); 5.05
Echo Round (5.055, 2); 5.06
?>
Iv. intval-of variables into integer patterns
Example Intval ()
< PHP
echo intval (4.3); 4
Echo intval (4.6); 4
?>
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The above is introduced into a method of rounding, rounding, ignoring decimals, such as the integer method, including rounding, ignoring aspects of the content, I hope that the PHP tutorial interested in a friend helpful.
