PHP into a rounding, rounding, retaining two decimal places, and so on digital processing method Daquan

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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

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: Ceil ()

<?php echo ceil (4.3); 5echo ceil (9.999); Ten?>

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: Floor ()

<?php echo floor (4.3); 4echo 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: Round ()

<?php Echo Round (3.4); 3echo round (3.5); 4echo round (3.6); 4echo Round (3.6, 0); 4echo round (1.95583, 2); 1.96echo round (1241757,-3); 1242000echo round (5.045, 2); 5.05echo round (5.055, 2); 5.06?>

Iv. intval-of variables into integer patterns

Example: Intval ()

<?php echo intval (4.3); 4echo intval (4.6); 4?>